WordPress/wp-includes/class-simplepie.php

<?php
if ( !class_exists( 'SimplePie' ) ) :
/**
 * SimplePie
 *
 * A PHP-Based RSS and Atom Feed Framework.
 * Takes the hard work out of managing a complete RSS/Atom solution.
 *
 * Copyright (c) 2004-2009, Ryan Parman and Geoffrey Sneddon
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 	* Redistributions of source code must retain the above copyright notice, this list of
 * 	  conditions and the following disclaimer.
 *
 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
 * 	  of conditions and the following disclaimer in the documentation and/or other materials
 * 	  provided with the distribution.
 *
 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
 * 	  to endorse or promote products derived from this software without specific prior
 * 	  written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package SimplePie
 * @version 1.2
 * @copyright 2004-2009 Ryan Parman, Geoffrey Sneddon
 * @author Ryan Parman
 * @author Geoffrey Sneddon
 * @link http://simplepie.org/ SimplePie
 * @link http://simplepie.org/support/ Please submit all bug reports and feature requests to the SimplePie forums
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 * @todo phpDoc comments
 */

/**
 * SimplePie Name
 */
define('SIMPLEPIE_NAME', 'SimplePie');

/**
 * SimplePie Version
 */
define('SIMPLEPIE_VERSION', '1.2');

/**
 * SimplePie Build
 */
define('SIMPLEPIE_BUILD', '20090627192103');

/**
 * SimplePie Website URL
 */
define('SIMPLEPIE_URL', 'http://simplepie.org');

/**
 * SimplePie Useragent
 * @see SimplePie::set_useragent()
 */
define('SIMPLEPIE_USERAGENT', SIMPLEPIE_NAME . '/' . SIMPLEPIE_VERSION . ' (Feed Parser; ' . SIMPLEPIE_URL . '; Allow like Gecko) Build/' . SIMPLEPIE_BUILD);

/**
 * SimplePie Linkback
 */
define('SIMPLEPIE_LINKBACK', '<a href="' . SIMPLEPIE_URL . '" title="' . SIMPLEPIE_NAME . ' ' . SIMPLEPIE_VERSION . '">' . SIMPLEPIE_NAME . '</a>');

/**
 * No Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_NONE', 0);

/**
 * Feed Link Element Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_AUTODISCOVERY', 1);

/**
 * Local Feed Extension Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_LOCAL_EXTENSION', 2);

/**
 * Local Feed Body Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_LOCAL_BODY', 4);

/**
 * Remote Feed Extension Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_REMOTE_EXTENSION', 8);

/**
 * Remote Feed Body Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_REMOTE_BODY', 16);

/**
 * All Feed Autodiscovery
 * @see SimplePie::set_autodiscovery_level()
 */
define('SIMPLEPIE_LOCATOR_ALL', 31);

/**
 * No known feed type
 */
define('SIMPLEPIE_TYPE_NONE', 0);

/**
 * RSS 0.90
 */
define('SIMPLEPIE_TYPE_RSS_090', 1);

/**
 * RSS 0.91 (Netscape)
 */
define('SIMPLEPIE_TYPE_RSS_091_NETSCAPE', 2);

/**
 * RSS 0.91 (Userland)
 */
define('SIMPLEPIE_TYPE_RSS_091_USERLAND', 4);

/**
 * RSS 0.91 (both Netscape and Userland)
 */
define('SIMPLEPIE_TYPE_RSS_091', 6);

/**
 * RSS 0.92
 */
define('SIMPLEPIE_TYPE_RSS_092', 8);

/**
 * RSS 0.93
 */
define('SIMPLEPIE_TYPE_RSS_093', 16);

/**
 * RSS 0.94
 */
define('SIMPLEPIE_TYPE_RSS_094', 32);

/**
 * RSS 1.0
 */
define('SIMPLEPIE_TYPE_RSS_10', 64);

/**
 * RSS 2.0
 */
define('SIMPLEPIE_TYPE_RSS_20', 128);

/**
 * RDF-based RSS
 */
define('SIMPLEPIE_TYPE_RSS_RDF', 65);

/**
 * Non-RDF-based RSS (truly intended as syndication format)
 */
define('SIMPLEPIE_TYPE_RSS_SYNDICATION', 190);

/**
 * All RSS
 */
define('SIMPLEPIE_TYPE_RSS_ALL', 255);

/**
 * Atom 0.3
 */
define('SIMPLEPIE_TYPE_ATOM_03', 256);

/**
 * Atom 1.0
 */
define('SIMPLEPIE_TYPE_ATOM_10', 512);

/**
 * All Atom
 */
define('SIMPLEPIE_TYPE_ATOM_ALL', 768);

/**
 * All feed types
 */
define('SIMPLEPIE_TYPE_ALL', 1023);

/**
 * No construct
 */
define('SIMPLEPIE_CONSTRUCT_NONE', 0);

/**
 * Text construct
 */
define('SIMPLEPIE_CONSTRUCT_TEXT', 1);

/**
 * HTML construct
 */
define('SIMPLEPIE_CONSTRUCT_HTML', 2);

/**
 * XHTML construct
 */
define('SIMPLEPIE_CONSTRUCT_XHTML', 4);

/**
 * base64-encoded construct
 */
define('SIMPLEPIE_CONSTRUCT_BASE64', 8);

/**
 * IRI construct
 */
define('SIMPLEPIE_CONSTRUCT_IRI', 16);

/**
 * A construct that might be HTML
 */
define('SIMPLEPIE_CONSTRUCT_MAYBE_HTML', 32);

/**
 * All constructs
 */
define('SIMPLEPIE_CONSTRUCT_ALL', 63);

/**
 * Don't change case
 */
define('SIMPLEPIE_SAME_CASE', 1);

/**
 * Change to lowercase
 */
define('SIMPLEPIE_LOWERCASE', 2);

/**
 * Change to uppercase
 */
define('SIMPLEPIE_UPPERCASE', 4);

/**
 * PCRE for HTML attributes
 */
define('SIMPLEPIE_PCRE_HTML_ATTRIBUTE', '((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*');

/**
 * PCRE for XML attributes
 */
define('SIMPLEPIE_PCRE_XML_ATTRIBUTE', '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*');

/**
 * XML Namespace
 */
define('SIMPLEPIE_NAMESPACE_XML', 'http://www.w3.org/XML/1998/namespace');

/**
 * Atom 1.0 Namespace
 */
define('SIMPLEPIE_NAMESPACE_ATOM_10', 'http://www.w3.org/2005/Atom');

/**
 * Atom 0.3 Namespace
 */
define('SIMPLEPIE_NAMESPACE_ATOM_03', 'http://purl.org/atom/ns#');

/**
 * RDF Namespace
 */
define('SIMPLEPIE_NAMESPACE_RDF', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');

/**
 * RSS 0.90 Namespace
 */
define('SIMPLEPIE_NAMESPACE_RSS_090', 'http://my.netscape.com/rdf/simple/0.9/');

/**
 * RSS 1.0 Namespace
 */
define('SIMPLEPIE_NAMESPACE_RSS_10', 'http://purl.org/rss/1.0/');

/**
 * RSS 1.0 Content Module Namespace
 */
define('SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT', 'http://purl.org/rss/1.0/modules/content/');

/**
 * RSS 2.0 Namespace
 * (Stupid, I know, but I'm certain it will confuse people less with support.)
 */
define('SIMPLEPIE_NAMESPACE_RSS_20', '');

/**
 * DC 1.0 Namespace
 */
define('SIMPLEPIE_NAMESPACE_DC_10', 'http://purl.org/dc/elements/1.0/');

/**
 * DC 1.1 Namespace
 */
define('SIMPLEPIE_NAMESPACE_DC_11', 'http://purl.org/dc/elements/1.1/');

/**
 * W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
 */
define('SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO', 'http://www.w3.org/2003/01/geo/wgs84_pos#');

/**
 * GeoRSS Namespace
 */
define('SIMPLEPIE_NAMESPACE_GEORSS', 'http://www.georss.org/georss');

/**
 * Media RSS Namespace
 */
define('SIMPLEPIE_NAMESPACE_MEDIARSS', 'http://search.yahoo.com/mrss/');

/**
 * Wrong Media RSS Namespace
 */
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG', 'http://search.yahoo.com/mrss');

/**
 * iTunes RSS Namespace
 */
define('SIMPLEPIE_NAMESPACE_ITUNES', 'http://www.itunes.com/dtds/podcast-1.0.dtd');

/**
 * XHTML Namespace
 */
define('SIMPLEPIE_NAMESPACE_XHTML', 'http://www.w3.org/1999/xhtml');

/**
 * IANA Link Relations Registry
 */
define('SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY', 'http://www.iana.org/assignments/relation/');

/**
 * Whether we're running on PHP5
 */
define('SIMPLEPIE_PHP5', version_compare(PHP_VERSION, '5.0.0', '>='));

/**
 * No file source
 */
define('SIMPLEPIE_FILE_SOURCE_NONE', 0);

/**
 * Remote file source
 */
define('SIMPLEPIE_FILE_SOURCE_REMOTE', 1);

/**
 * Local file source
 */
define('SIMPLEPIE_FILE_SOURCE_LOCAL', 2);

/**
 * fsockopen() file source
 */
define('SIMPLEPIE_FILE_SOURCE_FSOCKOPEN', 4);

/**
 * cURL file source
 */
define('SIMPLEPIE_FILE_SOURCE_CURL', 8);

/**
 * file_get_contents() file source
 */
define('SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS', 16);

/**
 * SimplePie
 *
 * @package SimplePie
 */
class SimplePie
{
	/**
	 * @var array Raw data
	 * @access private
	 */
	var $data = array();

	/**
	 * @var mixed Error string
	 * @access private
	 */
	var $error;

	/**
	 * @var object Instance of SimplePie_Sanitize (or other class)
	 * @see SimplePie::set_sanitize_class()
	 * @access private
	 */
	var $sanitize;

	/**
	 * @var string SimplePie Useragent
	 * @see SimplePie::set_useragent()
	 * @access private
	 */
	var $useragent = SIMPLEPIE_USERAGENT;

	/**
	 * @var string Feed URL
	 * @see SimplePie::set_feed_url()
	 * @access private
	 */
	var $feed_url;

	/**
	 * @var object Instance of SimplePie_File to use as a feed
	 * @see SimplePie::set_file()
	 * @access private
	 */
	var $file;

	/**
	 * @var string Raw feed data
	 * @see SimplePie::set_raw_data()
	 * @access private
	 */
	var $raw_data;

	/**
	 * @var int Timeout for fetching remote files
	 * @see SimplePie::set_timeout()
	 * @access private
	 */
	var $timeout = 10;

	/**
	 * @var bool Forces fsockopen() to be used for remote files instead
	 * of cURL, even if a new enough version is installed
	 * @see SimplePie::force_fsockopen()
	 * @access private
	 */
	var $force_fsockopen = false;

	/**
	 * @var bool Force the given data/URL to be treated as a feed no matter what
	 * it appears like
	 * @see SimplePie::force_feed()
	 * @access private
	 */
	var $force_feed = false;

	/**
	 * @var bool Enable/Disable XML dump
	 * @see SimplePie::enable_xml_dump()
	 * @access private
	 */
	var $xml_dump = false;

	/**
	 * @var bool Enable/Disable Caching
	 * @see SimplePie::enable_cache()
	 * @access private
	 */
	var $cache = true;

	/**
	 * @var int Cache duration (in seconds)
	 * @see SimplePie::set_cache_duration()
	 * @access private
	 */
	var $cache_duration = 3600;

	/**
	 * @var int Auto-discovery cache duration (in seconds)
	 * @see SimplePie::set_autodiscovery_cache_duration()
	 * @access private
	 */
	var $autodiscovery_cache_duration = 604800; // 7 Days.

	/**
	 * @var string Cache location (relative to executing script)
	 * @see SimplePie::set_cache_location()
	 * @access private
	 */
	var $cache_location = './cache';

	/**
	 * @var string Function that creates the cache filename
	 * @see SimplePie::set_cache_name_function()
	 * @access private
	 */
	var $cache_name_function = 'md5';

	/**
	 * @var bool Reorder feed by date descending
	 * @see SimplePie::enable_order_by_date()
	 * @access private
	 */
	var $order_by_date = true;

	/**
	 * @var mixed Force input encoding to be set to the follow value
	 * (false, or anything type-cast to false, disables this feature)
	 * @see SimplePie::set_input_encoding()
	 * @access private
	 */
	var $input_encoding = false;

	/**
	 * @var int Feed Autodiscovery Level
	 * @see SimplePie::set_autodiscovery_level()
	 * @access private
	 */
	var $autodiscovery = SIMPLEPIE_LOCATOR_ALL;

	/**
	 * @var string Class used for caching feeds
	 * @see SimplePie::set_cache_class()
	 * @access private
	 */
	var $cache_class = 'SimplePie_Cache';

	/**
	 * @var string Class used for locating feeds
	 * @see SimplePie::set_locator_class()
	 * @access private
	 */
	var $locator_class = 'SimplePie_Locator';

	/**
	 * @var string Class used for parsing feeds
	 * @see SimplePie::set_parser_class()
	 * @access private
	 */
	var $parser_class = 'SimplePie_Parser';

	/**
	 * @var string Class used for fetching feeds
	 * @see SimplePie::set_file_class()
	 * @access private
	 */
	var $file_class = 'SimplePie_File';

	/**
	 * @var string Class used for items
	 * @see SimplePie::set_item_class()
	 * @access private
	 */
	var $item_class = 'SimplePie_Item';

	/**
	 * @var string Class used for authors
	 * @see SimplePie::set_author_class()
	 * @access private
	 */
	var $author_class = 'SimplePie_Author';

	/**
	 * @var string Class used for categories
	 * @see SimplePie::set_category_class()
	 * @access private
	 */
	var $category_class = 'SimplePie_Category';

	/**
	 * @var string Class used for enclosures
	 * @see SimplePie::set_enclosures_class()
	 * @access private
	 */
	var $enclosure_class = 'SimplePie_Enclosure';

	/**
	 * @var string Class used for Media RSS <media:text> captions
	 * @see SimplePie::set_caption_class()
	 * @access private
	 */
	var $caption_class = 'SimplePie_Caption';

	/**
	 * @var string Class used for Media RSS <media:copyright>
	 * @see SimplePie::set_copyright_class()
	 * @access private
	 */
	var $copyright_class = 'SimplePie_Copyright';

	/**
	 * @var string Class used for Media RSS <media:credit>
	 * @see SimplePie::set_credit_class()
	 * @access private
	 */
	var $credit_class = 'SimplePie_Credit';

	/**
	 * @var string Class used for Media RSS <media:rating>
	 * @see SimplePie::set_rating_class()
	 * @access private
	 */
	var $rating_class = 'SimplePie_Rating';

	/**
	 * @var string Class used for Media RSS <media:restriction>
	 * @see SimplePie::set_restriction_class()
	 * @access private
	 */
	var $restriction_class = 'SimplePie_Restriction';

	/**
	 * @var string Class used for content-type sniffing
	 * @see SimplePie::set_content_type_sniffer_class()
	 * @access private
	 */
	var $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';

	/**
	 * @var string Class used for item sources.
	 * @see SimplePie::set_source_class()
	 * @access private
	 */
	var $source_class = 'SimplePie_Source';

	/**
	 * @var mixed Set javascript query string parameter (false, or
	 * anything type-cast to false, disables this feature)
	 * @see SimplePie::set_javascript()
	 * @access private
	 */
	var $javascript = 'js';

	/**
	 * @var int Maximum number of feeds to check with autodiscovery
	 * @see SimplePie::set_max_checked_feeds()
	 * @access private
	 */
	var $max_checked_feeds = 10;

	/**
	 * @var array All the feeds found during the autodiscovery process
	 * @see SimplePie::get_all_discovered_feeds()
	 * @access private
	 */
	var $all_discovered_feeds = array();

	/**
	 * @var string Web-accessible path to the handler_favicon.php file.
	 * @see SimplePie::set_favicon_handler()
	 * @access private
	 */
	var $favicon_handler = '';

	/**
	 * @var string Web-accessible path to the handler_image.php file.
	 * @see SimplePie::set_image_handler()
	 * @access private
	 */
	var $image_handler = '';

	/**
	 * @var array Stores the URLs when multiple feeds are being initialized.
	 * @see SimplePie::set_feed_url()
	 * @access private
	 */
	var $multifeed_url = array();

	/**
	 * @var array Stores SimplePie objects when multiple feeds initialized.
	 * @access private
	 */
	var $multifeed_objects = array();

	/**
	 * @var array Stores the get_object_vars() array for use with multifeeds.
	 * @see SimplePie::set_feed_url()
	 * @access private
	 */
	var $config_settings = null;

	/**
	 * @var integer Stores the number of items to return per-feed with multifeeds.
	 * @see SimplePie::set_item_limit()
	 * @access private
	 */
	var $item_limit = 0;

	/**
	 * @var array Stores the default attributes to be stripped by strip_attributes().
	 * @see SimplePie::strip_attributes()
	 * @access private
	 */
	var $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');

	/**
	 * @var array Stores the default tags to be stripped by strip_htmltags().
	 * @see SimplePie::strip_htmltags()
	 * @access private
	 */
	var $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');

	/**
	 * The SimplePie class contains feed level data and options
	 *
	 * There are two ways that you can create a new SimplePie object. The first
	 * is by passing a feed URL as a parameter to the SimplePie constructor
	 * (as well as optionally setting the cache location and cache expiry). This
	 * will initialise the whole feed with all of the default settings, and you
	 * can begin accessing methods and properties immediately.
	 *
	 * The second way is to create the SimplePie object with no parameters
	 * at all. This will enable you to set configuration options. After setting
	 * them, you must initialise the feed using $feed->init(). At that point the
	 * object's methods and properties will be available to you. This format is
	 * what is used throughout this documentation.
	 *
	 * @access public
	 * @since 1.0 Preview Release
	 * @param string $feed_url This is the URL you want to parse.
	 * @param string $cache_location This is where you want the cache to be stored.
	 * @param int $cache_duration This is the number of seconds that you want to store the cache file for.
	 */
	function SimplePie($feed_url = null, $cache_location = null, $cache_duration = null)
	{
		// Other objects, instances created here so we can set options on them
		$this->sanitize =& new SimplePie_Sanitize;

		// Set options if they're passed to the constructor
		if ($cache_location !== null)
		{
			$this->set_cache_location($cache_location);
		}

		if ($cache_duration !== null)
		{
			$this->set_cache_duration($cache_duration);
		}

		// Only init the script if we're passed a feed URL
		if ($feed_url !== null)
		{
			$this->set_feed_url($feed_url);
			$this->init();
		}
	}

	/**
	 * Used for converting object to a string
	 */
	function __toString()
	{
		return md5(serialize($this->data));
	}

	/**
	 * Remove items that link back to this before destroying this object
	 */
	function __destruct()
	{
		if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
		{
			if (!empty($this->data['items']))
			{
				foreach ($this->data['items'] as $item)
				{
					$item->__destruct();
				}
				unset($item, $this->data['items']);
			}
			if (!empty($this->data['ordered_items']))
			{
				foreach ($this->data['ordered_items'] as $item)
				{
					$item->__destruct();
				}
				unset($item, $this->data['ordered_items']);
			}
		}
	}

	/**
	 * Force the given data/URL to be treated as a feed no matter what it
	 * appears like
	 *
	 * @access public
	 * @since 1.1
	 * @param bool $enable Force the given data/URL to be treated as a feed
	 */
	function force_feed($enable = false)
	{
		$this->force_feed = (bool) $enable;
	}

	/**
	 * This is the URL of the feed you want to parse.
	 *
	 * This allows you to enter the URL of the feed you want to parse, or the
	 * website you want to try to use auto-discovery on. This takes priority
	 * over any set raw data.
	 *
	 * You can set multiple feeds to mash together by passing an array instead
	 * of a string for the $url. Remember that with each additional feed comes
	 * additional processing and resources.
	 *
	 * @access public
	 * @since 1.0 Preview Release
	 * @param mixed $url This is the URL (or array of URLs) that you want to parse.
	 * @see SimplePie::set_raw_data()
	 */
	function set_feed_url($url)
	{
		if (is_array($url))
		{
			$this->multifeed_url = array();
			foreach ($url as $value)
			{
				$this->multifeed_url[] = SimplePie_Misc::fix_protocol($value, 1);
			}
		}
		else
		{
			$this->feed_url = SimplePie_Misc::fix_protocol($url, 1);
		}
	}

	/**
	 * Provides an instance of SimplePie_File to use as a feed
	 *
	 * @access public
	 * @param object &$file Instance of SimplePie_File (or subclass)
	 * @return bool True on success, false on failure
	 */
	function set_file(&$file)
	{
		if (is_a($file, 'SimplePie_File'))
		{
			$this->feed_url = $file->url;
			$this->file =& $file;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to use a string of RSS/Atom data instead of a remote feed.
	 *
	 * If you have a feed available as a string in PHP, you can tell SimplePie
	 * to parse that data string instead of a remote feed. Any set feed URL
	 * takes precedence.
	 *
	 * @access public
	 * @since 1.0 Beta 3
	 * @param string $data RSS or Atom data as a string.
	 * @see SimplePie::set_feed_url()
	 */
	function set_raw_data($data)
	{
		$this->raw_data = $data;
	}

	/**
	 * Allows you to override the default timeout for fetching remote feeds.
	 *
	 * This allows you to change the maximum time the feed's server to respond
	 * and send the feed back.
	 *
	 * @access public
	 * @since 1.0 Beta 3
	 * @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
	 */
	function set_timeout($timeout = 10)
	{
		$this->timeout = (int) $timeout;
	}

	/**
	 * Forces SimplePie to use fsockopen() instead of the preferred cURL
	 * functions.
	 *
	 * @access public
	 * @since 1.0 Beta 3
	 * @param bool $enable Force fsockopen() to be used
	 */
	function force_fsockopen($enable = false)
	{
		$this->force_fsockopen = (bool) $enable;
	}

	/**
	 * Outputs the raw XML content of the feed, after it has gone through
	 * SimplePie's filters.
	 *
	 * Used only for debugging, this function will output the XML content as
	 * text/xml. When SimplePie reads in a feed, it does a bit of cleaning up
	 * before trying to parse it. Many parts of the feed are re-written in
	 * memory, and in the end, you have a parsable feed. XML dump shows you the
	 * actual XML that SimplePie tries to parse, which may or may not be very
	 * different from the original feed.
	 *
	 * @access public
	 * @since 1.0 Preview Release
	 * @param bool $enable Enable XML dump
	 */
	function enable_xml_dump($enable = false)
	{
		$this->xml_dump = (bool) $enable;
	}

	/**
	 * Enables/disables caching in SimplePie.
	 *
	 * This option allows you to disable caching all-together in SimplePie.
	 * However, disabling the cache can lead to longer load times.
	 *
	 * @access public
	 * @since 1.0 Preview Release
	 * @param bool $enable Enable caching
	 */
	function enable_cache($enable = true)
	{
		$this->cache = (bool) $enable;
	}

	/**
	 * Set the length of time (in seconds) that the contents of a feed
	 * will be cached.
	 *
	 * @access public
	 * @param int $seconds The feed content cache duration.
	 */
	function set_cache_duration($seconds = 3600)
	{
		$this->cache_duration = (int) $seconds;
	}

	/**
	 * Set the length of time (in seconds) that the autodiscovered feed
	 * URL will be cached.
	 *
	 * @access public
	 * @param int $seconds The autodiscovered feed URL cache duration.
	 */
	function set_autodiscovery_cache_duration($seconds = 604800)
	{
		$this->autodiscovery_cache_duration = (int) $seconds;
	}

	/**
	 * Set the file system location where the cached files should be stored.
	 *
	 * @access public
	 * @param string $location The file system location.
	 */
	function set_cache_location($location = './cache')
	{
		$this->cache_location = (string) $location;
	}

	/**
	 * Determines whether feed items should be sorted into reverse chronological order.
	 *
	 * @access public
	 * @param bool $enable Sort as reverse chronological order.
	 */
	function enable_order_by_date($enable = true)
	{
		$this->order_by_date = (bool) $enable;
	}

	/**
	 * Allows you to override the character encoding reported by the feed.
	 *
	 * @access public
	 * @param string $encoding Character encoding.
	 */
	function set_input_encoding($encoding = false)
	{
		if ($encoding)
		{
			$this->input_encoding = (string) $encoding;
		}
		else
		{
			$this->input_encoding = false;
		}
	}

	/**
	 * Set how much feed autodiscovery to do
	 *
	 * @access public
	 * @see SIMPLEPIE_LOCATOR_NONE
	 * @see SIMPLEPIE_LOCATOR_AUTODISCOVERY
	 * @see SIMPLEPIE_LOCATOR_LOCAL_EXTENSION
	 * @see SIMPLEPIE_LOCATOR_LOCAL_BODY
	 * @see SIMPLEPIE_LOCATOR_REMOTE_EXTENSION
	 * @see SIMPLEPIE_LOCATOR_REMOTE_BODY
	 * @see SIMPLEPIE_LOCATOR_ALL
	 * @param int $level Feed Autodiscovery Level (level can be a
	 * combination of the above constants, see bitwise OR operator)
	 */
	function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
	{
		$this->autodiscovery = (int) $level;
	}

	/**
	 * Allows you to change which class SimplePie uses for caching.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_cache_class($class = 'SimplePie_Cache')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Cache'))
		{
			$this->cache_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for auto-discovery.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_locator_class($class = 'SimplePie_Locator')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Locator'))
		{
			$this->locator_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for XML parsing.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_parser_class($class = 'SimplePie_Parser')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Parser'))
		{
			$this->parser_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for remote file fetching.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_file_class($class = 'SimplePie_File')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_File'))
		{
			$this->file_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for data sanitization.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_sanitize_class($class = 'SimplePie_Sanitize')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Sanitize'))
		{
			$this->sanitize =& new $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling feed items.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_item_class($class = 'SimplePie_Item')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Item'))
		{
			$this->item_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling author data.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_author_class($class = 'SimplePie_Author')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Author'))
		{
			$this->author_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling category data.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_category_class($class = 'SimplePie_Category')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Category'))
		{
			$this->category_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for feed enclosures.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_enclosure_class($class = 'SimplePie_Enclosure')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Enclosure'))
		{
			$this->enclosure_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:text> captions
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_caption_class($class = 'SimplePie_Caption')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Caption'))
		{
			$this->caption_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:copyright>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_copyright_class($class = 'SimplePie_Copyright')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Copyright'))
		{
			$this->copyright_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:credit>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_credit_class($class = 'SimplePie_Credit')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Credit'))
		{
			$this->credit_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:rating>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_rating_class($class = 'SimplePie_Rating')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Rating'))
		{
			$this->rating_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:restriction>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_restriction_class($class = 'SimplePie_Restriction')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Restriction'))
		{
			$this->restriction_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for content-type sniffing.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_content_type_sniffer_class($class = 'SimplePie_Content_Type_Sniffer')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Content_Type_Sniffer'))
		{
			$this->content_type_sniffer_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses item sources.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_source_class($class = 'SimplePie_Source')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Source'))
		{
			$this->source_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to override the default user agent string.
	 *
	 * @access public
	 * @param string $ua New user agent string.
	 */
	function set_useragent($ua = SIMPLEPIE_USERAGENT)
	{
		$this->useragent = (string) $ua;
	}

	/**
	 * Set callback function to create cache filename with
	 *
	 * @access public
	 * @param mixed $function Callback function
	 */
	function set_cache_name_function($function = 'md5')
	{
		if (is_callable($function))
		{
			$this->cache_name_function = $function;
		}
	}

	/**
	 * Set javascript query string parameter
	 *
	 * @access public
	 * @param mixed $get Javascript query string parameter
	 */
	function set_javascript($get = 'js')
	{
		if ($get)
		{
			$this->javascript = (string) $get;
		}
		else
		{
			$this->javascript = false;
		}
	}

	/**
	 * Set options to make SP as fast as possible.  Forgoes a
	 * substantial amount of data sanitization in favor of speed.
	 *
	 * @access public
	 * @param bool $set Whether to set them or not
	 */
	function set_stupidly_fast($set = false)
	{
		if ($set)
		{
			$this->enable_order_by_date(false);
			$this->remove_div(false);
			$this->strip_comments(false);
			$this->strip_htmltags(false);
			$this->strip_attributes(false);
			$this->set_image_handler(false);
		}
	}

	/**
	 * Set maximum number of feeds to check with autodiscovery
	 *
	 * @access public
	 * @param int $max Maximum number of feeds to check
	 */
	function set_max_checked_feeds($max = 10)
	{
		$this->max_checked_feeds = (int) $max;
	}

	function remove_div($enable = true)
	{
		$this->sanitize->remove_div($enable);
	}

	function strip_htmltags($tags = '', $encode = null)
	{
		if ($tags === '')
		{
			$tags = $this->strip_htmltags;
		}
		$this->sanitize->strip_htmltags($tags);
		if ($encode !== null)
		{
			$this->sanitize->encode_instead_of_strip($tags);
		}
	}

	function encode_instead_of_strip($enable = true)
	{
		$this->sanitize->encode_instead_of_strip($enable);
	}

	function strip_attributes($attribs = '')
	{
		if ($attribs === '')
		{
			$attribs = $this->strip_attributes;
		}
		$this->sanitize->strip_attributes($attribs);
	}

	function set_output_encoding($encoding = 'UTF-8')
	{
		$this->sanitize->set_output_encoding($encoding);
	}

	function strip_comments($strip = false)
	{
		$this->sanitize->strip_comments($strip);
	}

	/**
	 * Set element/attribute key/value pairs of HTML attributes
	 * containing URLs that need to be resolved relative to the feed
	 *
	 * @access public
	 * @since 1.0
	 * @param array $element_attribute Element/attribute key/value pairs
	 */
	function set_url_replacements($element_attribute = array('a' => 'href', 'area' => 'href', 'blockquote' => 'cite', 'del' => 'cite', 'form' => 'action', 'img' => array('longdesc', 'src'), 'input' => 'src', 'ins' => 'cite', 'q' => 'cite'))
	{
		$this->sanitize->set_url_replacements($element_attribute);
	}

	/**
	 * Set the handler to enable the display of cached favicons.
	 *
	 * @access public
	 * @param str $page Web-accessible path to the handler_favicon.php file.
	 * @param str $qs The query string that the value should be passed to.
	 */
	function set_favicon_handler($page = false, $qs = 'i')
	{
		if ($page !== false)
		{
			$this->favicon_handler = $page . '?' . $qs . '=';
		}
		else
		{
			$this->favicon_handler = '';
		}
	}

	/**
	 * Set the handler to enable the display of cached images.
	 *
	 * @access public
	 * @param str $page Web-accessible path to the handler_image.php file.
	 * @param str $qs The query string that the value should be passed to.
	 */
	function set_image_handler($page = false, $qs = 'i')
	{
		if ($page !== false)
		{
			$this->sanitize->set_image_handler($page . '?' . $qs . '=');
		}
		else
		{
			$this->image_handler = '';
		}
	}

	/**
	 * Set the limit for items returned per-feed with multifeeds.
	 *
	 * @access public
	 * @param integer $limit The maximum number of items to return.
	 */
	function set_item_limit($limit = 0)
	{
		$this->item_limit = (int) $limit;
	}

	function init()
	{
		// Check absolute bare minimum requirements.
		if ((function_exists('version_compare') && version_compare(PHP_VERSION, '4.3.0', '<')) || !extension_loaded('xml') || !extension_loaded('pcre'))
		{
			return false;
		}
		// Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader.
		elseif (!extension_loaded('xmlreader'))
		{
			static $xml_is_sane = null;
			if ($xml_is_sane === null)
			{
				$parser_check = xml_parser_create();
				xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
				xml_parser_free($parser_check);
				$xml_is_sane = isset($values[0]['value']);
			}
			if (!$xml_is_sane)
			{
				return false;
			}
		}

		if (isset($_GET[$this->javascript]))
		{
			SimplePie_Misc::output_javascript();
			exit;
		}

		// Pass whatever was set with config options over to the sanitizer.
		$this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->cache_class);
		$this->sanitize->pass_file_data($this->file_class, $this->timeout, $this->useragent, $this->force_fsockopen);

		if ($this->feed_url !== null || $this->raw_data !== null)
		{
			$this->data = array();
			$this->multifeed_objects = array();
			$cache = false;

			if ($this->feed_url !== null)
			{
				$parsed_feed_url = SimplePie_Misc::parse_url($this->feed_url);
				// Decide whether to enable caching
				if ($this->cache && $parsed_feed_url['scheme'] !== '')
				{
					$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc');
				}
				// If it's enabled and we don't want an XML dump, use the cache
				if ($cache && !$this->xml_dump)
				{
					// Load the Cache
					$this->data = $cache->load();
					if (!empty($this->data))
					{
						// If the cache is for an outdated build of SimplePie
						if (!isset($this->data['build']) || $this->data['build'] !== SIMPLEPIE_BUILD)
						{
							$cache->unlink();
							$this->data = array();
						}
						// If we've hit a collision just rerun it with caching disabled
						elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url)
						{
							$cache = false;
							$this->data = array();
						}
						// If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
						elseif (isset($this->data['feed_url']))
						{
							// If the autodiscovery cache is still valid use it.
							if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
							{
								// Do not need to do feed autodiscovery yet.
								if ($this->data['feed_url'] === $this->data['url'])
								{
									$cache->unlink();
									$this->data = array();
								}
								else
								{
									$this->set_feed_url($this->data['feed_url']);
									return $this->init();
								}
							}
						}
						// Check if the cache has been updated
						elseif ($cache->mtime() + $this->cache_duration < time())
						{
							// If we have last-modified and/or etag set
							if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag']))
							{
								$headers = array();
								if (isset($this->data['headers']['last-modified']))
								{
									$headers['if-modified-since'] = $this->data['headers']['last-modified'];
								}
								if (isset($this->data['headers']['etag']))
								{
									$headers['if-none-match'] = '"' . $this->data['headers']['etag'] . '"';
								}
								$file =& new $this->file_class($this->feed_url, $this->timeout/10, 5, $headers, $this->useragent, $this->force_fsockopen);
								if ($file->success)
								{
									if ($file->status_code === 304)
									{
										$cache->touch();
										return true;
									}
									else
									{
										$headers = $file->headers;
									}
								}
								else
								{
									unset($file);
								}
							}
						}
						// If the cache is still valid, just return true
						else
						{
							return true;
						}
					}
					// If the cache is empty, delete it
					else
					{
						$cache->unlink();
						$this->data = array();
					}
				}
				// If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
				if (!isset($file))
				{
					if (is_a($this->file, 'SimplePie_File') && $this->file->url === $this->feed_url)
					{
						$file =& $this->file;
					}
					else
					{
						$file =& new $this->file_class($this->feed_url, $this->timeout, 5, null, $this->useragent, $this->force_fsockopen);
					}
				}
				// If the file connection has an error, set SimplePie::error to that and quit
				if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
				{
					$this->error = $file->error;
					if (!empty($this->data))
					{
						return true;
					}
					else
					{
						return false;
					}
				}

				if (!$this->force_feed)
				{
					// Check if the supplied URL is a feed, if it isn't, look for it.
					$locate =& new $this->locator_class($file, $this->timeout, $this->useragent, $this->file_class, $this->max_checked_feeds, $this->content_type_sniffer_class);
					if (!$locate->is_feed($file))
					{
						// We need to unset this so that if SimplePie::set_file() has been called that object is untouched
						unset($file);
						if ($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds))
						{
							if ($cache)
							{
								$this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
								if (!$cache->save($this))
								{
									trigger_error("$this->cache_location is not writeable", E_USER_WARNING);
								}
								$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $file->url), 'spc');
							}
							$this->feed_url = $file->url;
						}
						else
						{
							$this->error = "A feed could not be found at $this->feed_url";
							SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
							return false;
						}
					}
					$locate = null;
				}

				$headers = $file->headers;
				$data = $file->body;
				$sniffer =& new $this->content_type_sniffer_class($file);
				$sniffed = $sniffer->get_type();
			}
			else
			{
				$data = $this->raw_data;
			}

			// Set up array of possible encodings
			$encodings = array();

			// First check to see if input has been overridden.
			if ($this->input_encoding !== false)
			{
				$encodings[] = $this->input_encoding;
			}

			$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
			$text_types = array('text/xml', 'text/xml-external-parsed-entity');

			// RFC 3023 (only applies to sniffed content)
			if (isset($sniffed))
			{
				if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
				{
					if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
					{
						$encodings[] = strtoupper($charset[1]);
					}
					$encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
					$encodings[] = 'UTF-8';
				}
				elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml')
				{
					if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
					{
						$encodings[] = $charset[1];
					}
					$encodings[] = 'US-ASCII';
				}
				// Text MIME-type default
				elseif (substr($sniffed, 0, 5) === 'text/')
				{
					$encodings[] = 'US-ASCII';
				}
			}

			// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
			$encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
			$encodings[] = 'UTF-8';
			$encodings[] = 'ISO-8859-1';

			// There's no point in trying an encoding twice
			$encodings = array_unique($encodings);

			// If we want the XML, just output that with the most likely encoding and quit
			if ($this->xml_dump)
			{
				header('Content-type: text/xml; charset=' . $encodings[0]);
				echo $data;
				exit;
			}

			// Loop through each possible encoding, till we return something, or run out of possibilities
			foreach ($encodings as $encoding)
			{
				// Change the encoding to UTF-8 (as we always use UTF-8 internally)
				if ($utf8_data = SimplePie_Misc::change_encoding($data, $encoding, 'UTF-8'))
				{
					// Create new parser
					$parser =& new $this->parser_class();

					// If it's parsed fine
					if ($parser->parse($utf8_data, 'UTF-8'))
					{
						$this->data = $parser->get_data();
						if ($this->get_type() & ~SIMPLEPIE_TYPE_NONE)
						{
							if (isset($headers))
							{
								$this->data['headers'] = $headers;
							}
							$this->data['build'] = SIMPLEPIE_BUILD;

							// Cache the file if caching is enabled
							if ($cache && !$cache->save($this))
							{
								trigger_error("$cache->name is not writeable", E_USER_WARNING);
							}
							return true;
						}
						else
						{
							$this->error = "A feed could not be found at $this->feed_url";
							SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
							return false;
						}
					}
				}
			}
			if(isset($parser))
			{
				// We have an error, just set SimplePie_Misc::error to it and quit
				$this->error = sprintf('XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
			}
			else
			{
				$this->error = 'The data could not be converted to UTF-8';
			}
			SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
			return false;
		}
		elseif (!empty($this->multifeed_url))
		{
			$i = 0;
			$success = 0;
			$this->multifeed_objects = array();
			foreach ($this->multifeed_url as $url)
			{
				if (SIMPLEPIE_PHP5)
				{
					// This keyword needs to defy coding standards for PHP4 compatibility
					$this->multifeed_objects[$i] = clone($this);
				}
				else
				{
					$this->multifeed_objects[$i] = $this;
				}
				$this->multifeed_objects[$i]->set_feed_url($url);
				$success |= $this->multifeed_objects[$i]->init();
				$i++;
			}
			return (bool) $success;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Return the error message for the occured error
	 *
	 * @access public
	 * @return string Error message
	 */
	function error()
	{
		return $this->error;
	}

	function get_encoding()
	{
		return $this->sanitize->output_encoding;
	}

	function handle_content_type($mime = 'text/html')
	{
		if (!headers_sent())
		{
			$header = "Content-type: $mime;";
			if ($this->get_encoding())
			{
				$header .= ' charset=' . $this->get_encoding();
			}
			else
			{
				$header .= ' charset=UTF-8';
			}
			header($header);
		}
	}

	function get_type()
	{
		if (!isset($this->data['type']))
		{
			$this->data['type'] = SIMPLEPIE_TYPE_ALL;
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_10;
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_03;
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF']))
			{
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['channel'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['image'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['textinput']))
				{
					$this->data['type'] &= SIMPLEPIE_TYPE_RSS_10;
				}
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['channel'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['image'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['textinput']))
				{
					$this->data['type'] &= SIMPLEPIE_TYPE_RSS_090;
				}
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_RSS_ALL;
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
				{
					switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
					{
						case '0.91':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091;
							if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
							{
								switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
								{
									case '0':
										$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_NETSCAPE;
										break;

									case '24':
										$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_USERLAND;
										break;
								}
							}
							break;

						case '0.92':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_092;
							break;

						case '0.93':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_093;
							break;

						case '0.94':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_094;
							break;

						case '2.0':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_20;
							break;
					}
				}
			}
			else
			{
				$this->data['type'] = SIMPLEPIE_TYPE_NONE;
			}
		}
		return $this->data['type'];
	}

	/**
	 * Returns the URL for the favicon of the feed's website.
	 *
	 * @todo Cache atom:icon
	 * @access public
	 * @since 1.0
	 */
	function get_favicon()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif (($url = $this->get_link()) !== null && preg_match('/^http(s)?:\/\//i', $url))
		{
			$favicon = SimplePie_Misc::absolutize_url('/favicon.ico', $url);

			if ($this->cache && $this->favicon_handler)
			{
				$favicon_filename = call_user_func($this->cache_name_function, $favicon);
				$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, $favicon_filename, 'spi');

				if ($cache->load())
				{
					return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
				}
				else
				{
					$file =& new $this->file_class($favicon, $this->timeout / 10, 5, array('X-FORWARDED-FOR' => $_SERVER['REMOTE_ADDR']), $this->useragent, $this->force_fsockopen);

					if ($file->success && ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)) && strlen($file->body) > 0)
					{
						$sniffer =& new $this->content_type_sniffer_class($file);
						if (substr($sniffer->get_type(), 0, 6) === 'image/')
						{
							if ($cache->save(array('headers' => $file->headers, 'body' => $file->body)))
							{
								return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
							}
							else
							{
								trigger_error("$cache->name is not writeable", E_USER_WARNING);
								return $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
							}
						}
						// not an image
						else
						{
							return false;
						}
					}
				}
			}
			else
			{
				return $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
			}
		}
		return false;
	}

	/**
	 * @todo If we have a perm redirect we should return the new URL
	 * @todo When we make the above change, let's support <itunes:new-feed-url> as well
	 * @todo Also, |atom:link|@rel=self
	 */
	function subscribe_url()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize($this->feed_url, SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function subscribe_feed()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function subscribe_outlook()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize('outlook' . SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function subscribe_podcast()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 3), SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function subscribe_itunes()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 4), SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	/**
	 * Creates the subscribe_* methods' return data
	 *
	 * @access private
	 * @param string $feed_url String to prefix to the feed URL
	 * @param string $site_url String to prefix to the site URL (and
	 * suffix to the feed URL)
	 * @return mixed URL if feed exists, false otherwise
	 */
	function subscribe_service($feed_url, $site_url = null)
	{
		if ($this->subscribe_url())
		{
			$return = $feed_url . rawurlencode($this->feed_url);
			if ($site_url !== null && $this->get_link() !== null)
			{
				$return .= $site_url . rawurlencode($this->get_link());
			}
			return $this->sanitize($return, SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function subscribe_aol()
	{
		return $this->subscribe_service('http://feeds.my.aol.com/add.jsp?url=');
	}

	function subscribe_bloglines()
	{
		return $this->subscribe_service('http://www.bloglines.com/sub/');
	}

	function subscribe_eskobo()
	{
		return $this->subscribe_service('http://www.eskobo.com/?AddToMyPage=');
	}

	function subscribe_feedfeeds()
	{
		return $this->subscribe_service('http://www.feedfeeds.com/add?feed=');
	}

	function subscribe_feedster()
	{
		return $this->subscribe_service('http://www.feedster.com/myfeedster.php?action=addrss&confirm=no&rssurl=');
	}

	function subscribe_google()
	{
		return $this->subscribe_service('http://fusion.google.com/add?feedurl=');
	}

	function subscribe_gritwire()
	{
		return $this->subscribe_service('http://my.gritwire.com/feeds/addExternalFeed.aspx?FeedUrl=');
	}

	function subscribe_msn()
	{
		return $this->subscribe_service('http://my.msn.com/addtomymsn.armx?id=rss&ut=', '&ru=');
	}

	function subscribe_netvibes()
	{
		return $this->subscribe_service('http://www.netvibes.com/subscribe.php?url=');
	}

	function subscribe_newsburst()
	{
		return $this->subscribe_service('http://www.newsburst.com/Source/?add=');
	}

	function subscribe_newsgator()
	{
		return $this->subscribe_service('http://www.newsgator.com/ngs/subscriber/subext.aspx?url=');
	}

	function subscribe_odeo()
	{
		return $this->subscribe_service('http://www.odeo.com/listen/subscribe?feed=');
	}

	function subscribe_podnova()
	{
		return $this->subscribe_service('http://www.podnova.com/index_your_podcasts.srf?action=add&url=');
	}

	function subscribe_rojo()
	{
		return $this->subscribe_service('http://www.rojo.com/add-subscription?resource=');
	}

	function subscribe_yahoo()
	{
		return $this->subscribe_service('http://add.my.yahoo.com/rss?url=');
	}

	function get_feed_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_ATOM_10)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_ATOM_03)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_RDF)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag];
			}
		}
		return null;
	}

	function get_channel_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_ATOM_ALL)
		{
			if ($return = $this->get_feed_tags($namespace, $tag))
			{
				return $return;
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_10)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_090)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		return null;
	}

	function get_image_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_RSS_10)
		{
			if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_090)
		{
			if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if ($image = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		return null;
	}

	function get_base($element = array())
	{
		if (!($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION) && !empty($element['xml_base_explicit']) && isset($element['xml_base']))
		{
			return $element['xml_base'];
		}
		elseif ($this->get_link() !== null)
		{
			return $this->get_link();
		}
		else
		{
			return $this->subscribe_url();
		}
	}

	function sanitize($data, $type, $base = '')
	{
		return $this->sanitize->sanitize($data, $type, $base);
	}

	function get_title()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_category($key = 0)
	{
		$categories = $this->get_categories();
		if (isset($categories[$key]))
		{
			return $categories[$key];
		}
		else
		{
			return null;
		}
	}

	function get_categories()
	{
		$categories = array();

		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
		{
			$term = null;
			$scheme = null;
			$label = null;
			if (isset($category['attribs']['']['term']))
			{
				$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['scheme']))
			{
				$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['label']))
			{
				$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			$categories[] =& new $this->category_class($term, $scheme, $label);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
		{
			// This is really the label, but keep this as the term also for BC.
			// Label will also work on retrieving because that falls back to term.
			$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			if (isset($category['attribs']['']['domain']))
			{
				$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			else
			{
				$scheme = null;
			}
			$categories[] =& new $this->category_class($term, $scheme, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
		{
			$categories[] =& new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
		{
			$categories[] =& new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($categories))
		{
			return SimplePie_Misc::array_unique($categories);
		}
		else
		{
			return null;
		}
	}

	function get_author($key = 0)
	{
		$authors = $this->get_authors();
		if (isset($authors[$key]))
		{
			return $authors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_authors()
	{
		$authors = array();
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$authors[] =& new $this->author_class($name, $uri, $email);
			}
		}
		if ($author = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$authors[] =& new $this->author_class($name, $url, $email);
			}
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
		{
			$authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
		{
			$authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
		{
			$authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($authors))
		{
			return SimplePie_Misc::array_unique($authors);
		}
		else
		{
			return null;
		}
	}

	function get_contributor($key = 0)
	{
		$contributors = $this->get_contributors();
		if (isset($contributors[$key]))
		{
			return $contributors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_contributors()
	{
		$contributors = array();
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$contributors[] =& new $this->author_class($name, $uri, $email);
			}
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$contributors[] =& new $this->author_class($name, $url, $email);
			}
		}

		if (!empty($contributors))
		{
			return SimplePie_Misc::array_unique($contributors);
		}
		else
		{
			return null;
		}
	}

	function get_link($key = 0, $rel = 'alternate')
	{
		$links = $this->get_links($rel);
		if (isset($links[$key]))
		{
			return $links[$key];
		}
		else
		{
			return null;
		}
	}

	/**
	 * Added for parity between the parent-level and the item/entry-level.
	 */
	function get_permalink()
	{
		return $this->get_link(0);
	}

	function get_links($rel = 'alternate')
	{
		if (!isset($this->data['links']))
		{
			$this->data['links'] = array();
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link'))
			{
				foreach ($links as $link)
				{
					if (isset($link['attribs']['']['href']))
					{
						$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
						$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
					}
				}
			}
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link'))
			{
				foreach ($links as $link)
				{
					if (isset($link['attribs']['']['href']))
					{
						$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
						$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));

					}
				}
			}
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}

			$keys = array_keys($this->data['links']);
			foreach ($keys as $key)
			{
				if (SimplePie_Misc::is_isegment_nz_nc($key))
				{
					if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
						$this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
					}
					else
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
					}
				}
				elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
				{
					$this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
				}
				$this->data['links'][$key] = array_unique($this->data['links'][$key]);
			}
		}

		if (isset($this->data['links'][$rel]))
		{
			return $this->data['links'][$rel];
		}
		else
		{
			return null;
		}
	}

	function get_all_discovered_feeds()
	{
		return $this->all_discovered_feeds;
	}

	function get_description()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'tagline'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		else
		{
			return null;
		}
	}

	function get_copyright()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'copyright'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'copyright'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_language()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['xml_lang']))
		{
			return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['xml_lang']))
		{
			return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['xml_lang']))
		{
			return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (isset($this->data['headers']['content-language']))
		{
			return $this->sanitize($this->data['headers']['content-language'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_latitude()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lat'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[1];
		}
		else
		{
			return null;
		}
	}

	function get_longitude()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
		{
			return (float) $return[0]['data'];
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lon'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[2];
		}
		else
		{
			return null;
		}
	}

	function get_image_title()
	{
		if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_image_url()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'image'))
		{
			return $this->sanitize($return[0]['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'logo'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'url'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'url'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		else
		{
			return null;
		}
	}

	function get_image_link()
	{
		if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		else
		{
			return null;
		}
	}

	function get_image_width()
	{
		if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'width'))
		{
			return round($return[0]['data']);
		}
		elseif ($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION && $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
		{
			return 88.0;
		}
		else
		{
			return null;
		}
	}

	function get_image_height()
	{
		if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'height'))
		{
			return round($return[0]['data']);
		}
		elseif ($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION && $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
		{
			return 31.0;
		}
		else
		{
			return null;
		}
	}

	function get_item_quantity($max = 0)
	{
		$max = (int) $max;
		$qty = count($this->get_items());
		if ($max === 0)
		{
			return $qty;
		}
		else
		{
			return ($qty > $max) ? $max : $qty;
		}
	}

	function get_item($key = 0)
	{
		$items = $this->get_items();
		if (isset($items[$key]))
		{
			return $items[$key];
		}
		else
		{
			return null;
		}
	}

	function get_items($start = 0, $end = 0)
	{
		if (!isset($this->data['items']))
		{
			if (!empty($this->multifeed_objects))
			{
				$this->data['items'] = SimplePie::merge_items($this->multifeed_objects, $start, $end, $this->item_limit);
			}
			else
			{
				$this->data['items'] = array();
				if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'entry'))
				{
					$keys = array_keys($items);
					foreach ($keys as $key)
					{
						$this->data['items'][] =& new $this->item_class($this, $items[$key]);
					}
				}
				if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'entry'))
				{
					$keys = array_keys($items);
					foreach ($keys as $key)
					{
						$this->data['items'][] =& new $this->item_class($this, $items[$key]);
					}
				}
				if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'item'))
				{
					$keys = array_keys($items);
					foreach ($keys as $key)
					{
						$this->data['items'][] =& new $this->item_class($this, $items[$key]);
					}
				}
				if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'item'))
				{
					$keys = array_keys($items);
					foreach ($keys as $key)
					{
						$this->data['items'][] =& new $this->item_class($this, $items[$key]);
					}
				}
				if ($items = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'item'))
				{
					$keys = array_keys($items);
					foreach ($keys as $key)
					{
						$this->data['items'][] =& new $this->item_class($this, $items[$key]);
					}
				}
			}
		}

		if (!empty($this->data['items']))
		{
			// If we want to order it by date, check if all items have a date, and then sort it
			if ($this->order_by_date && empty($this->multifeed_objects))
			{
				if (!isset($this->data['ordered_items']))
				{
					$do_sort = true;
					foreach ($this->data['items'] as $item)
					{
						if (!$item->get_date('U'))
						{
							$do_sort = false;
							break;
						}
					}
					$item = null;
					$this->data['ordered_items'] = $this->data['items'];
					if ($do_sort)
					{
						usort($this->data['ordered_items'], array(&$this, 'sort_items'));
					}
				}
				$items = $this->data['ordered_items'];
			}
			else
			{
				$items = $this->data['items'];
			}

			// Slice the data as desired
			if ($end === 0)
			{
				return array_slice($items, $start);
			}
			else
			{
				return array_slice($items, $start, $end);
			}
		}
		else
		{
			return array();
		}
	}

	/**
	 * @static
	 */
	function sort_items($a, $b)
	{
		return $a->get_date('U') <= $b->get_date('U');
	}

	/**
	 * @static
	 */
	function merge_items($urls, $start = 0, $end = 0, $limit = 0)
	{
		if (is_array($urls) && sizeof($urls) > 0)
		{
			$items = array();
			foreach ($urls as $arg)
			{
				if (is_a($arg, 'SimplePie'))
				{
					$items = array_merge($items, $arg->get_items(0, $limit));
				}
				else
				{
					trigger_error('Arguments must be SimplePie objects', E_USER_WARNING);
				}
			}

			$do_sort = true;
			foreach ($items as $item)
			{
				if (!$item->get_date('U'))
				{
					$do_sort = false;
					break;
				}
			}
			$item = null;
			if ($do_sort)
			{
				usort($items, array('SimplePie', 'sort_items'));
			}

			if ($end === 0)
			{
				return array_slice($items, $start);
			}
			else
			{
				return array_slice($items, $start, $end);
			}
		}
		else
		{
			trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING);
			return array();
		}
	}
}

class SimplePie_Item
{
	var $feed;
	var $data = array();

	function SimplePie_Item($feed, $data)
	{
		$this->feed = $feed;
		$this->data = $data;
	}

	function __toString()
	{
		return md5(serialize($this->data));
	}

	/**
	 * Remove items that link back to this before destroying this object
	 */
	function __destruct()
	{
		if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
		{
			unset($this->feed);
		}
	}

	function get_item_tags($namespace, $tag)
	{
		if (isset($this->data['child'][$namespace][$tag]))
		{
			return $this->data['child'][$namespace][$tag];
		}
		else
		{
			return null;
		}
	}

	function get_base($element = array())
	{
		return $this->feed->get_base($element);
	}

	function sanitize($data, $type, $base = '')
	{
		return $this->feed->sanitize($data, $type, $base);
	}

	function get_feed()
	{
		return $this->feed;
	}

	function get_id($hash = false)
	{
		if (!$hash)
		{
			if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'id'))
			{
				return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'id'))
			{
				return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'guid'))
			{
				return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'identifier'))
			{
				return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'identifier'))
			{
				return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif (($return = $this->get_permalink()) !== null)
			{
				return $return;
			}
			elseif (($return = $this->get_title()) !== null)
			{
				return $return;
			}
		}
		if ($this->get_permalink() !== null || $this->get_title() !== null)
		{
			return md5($this->get_permalink() . $this->get_title());
		}
		else
		{
			return md5(serialize($this->data));
		}
	}

	function get_title()
	{
		if (!isset($this->data['title']))
		{
			if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
			{
				$this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			else
			{
				$this->data['title'] = null;
			}
		}
		return $this->data['title'];
	}

	function get_description($description_only = false)
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'summary'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'summary'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (!$description_only)
		{
			return $this->get_content(true);
		}
		else
		{
			return null;
		}
	}

	function get_content($content_only = false)
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'content'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_content_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'content'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT, 'encoded'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif (!$content_only)
		{
			return $this->get_description(true);
		}
		else
		{
			return null;
		}
	}

	function get_category($key = 0)
	{
		$categories = $this->get_categories();
		if (isset($categories[$key]))
		{
			return $categories[$key];
		}
		else
		{
			return null;
		}
	}

	function get_categories()
	{
		$categories = array();

		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
		{
			$term = null;
			$scheme = null;
			$label = null;
			if (isset($category['attribs']['']['term']))
			{
				$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['scheme']))
			{
				$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['label']))
			{
				$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			$categories[] =& new $this->feed->category_class($term, $scheme, $label);
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
		{
			// This is really the label, but keep this as the term also for BC.
			// Label will also work on retrieving because that falls back to term.
			$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			if (isset($category['attribs']['']['domain']))
			{
				$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			else
			{
				$scheme = null;
			}
			$categories[] =& new $this->feed->category_class($term, $scheme, null);
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
		{
			$categories[] =& new $this->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
		{
			$categories[] =& new $this->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($categories))
		{
			return SimplePie_Misc::array_unique($categories);
		}
		else
		{
			return null;
		}
	}

	function get_author($key = 0)
	{
		$authors = $this->get_authors();
		if (isset($authors[$key]))
		{
			return $authors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_contributor($key = 0)
	{
		$contributors = $this->get_contributors();
		if (isset($contributors[$key]))
		{
			return $contributors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_contributors()
	{
		$contributors = array();
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$contributors[] =& new $this->feed->author_class($name, $uri, $email);
			}
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$contributors[] =& new $this->feed->author_class($name, $url, $email);
			}
		}

		if (!empty($contributors))
		{
			return SimplePie_Misc::array_unique($contributors);
		}
		else
		{
			return null;
		}
	}

	function get_authors()
	{
		$authors = array();
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$authors[] =& new $this->feed->author_class($name, $uri, $email);
			}
		}
		if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$authors[] =& new $this->feed->author_class($name, $url, $email);
			}
		}
		if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'author'))
		{
			$authors[] =& new $this->feed->author_class(null, null, $this->sanitize($author[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
		{
			$authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
		{
			$authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
		{
			$authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($authors))
		{
			return SimplePie_Misc::array_unique($authors);
		}
		elseif (($source = $this->get_source()) && ($authors = $source->get_authors()))
		{
			return $authors;
		}
		elseif ($authors = $this->feed->get_authors())
		{
			return $authors;
		}
		else
		{
			return null;
		}
	}

	function get_copyright()
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_date($date_format = 'j F Y, g:i a')
	{
		if (!isset($this->data['date']))
		{
			if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'published'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'updated'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'issued'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'created'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'modified'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'pubDate'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'date'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}
			elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'date'))
			{
				$this->data['date']['raw'] = $return[0]['data'];
			}

			if (!empty($this->data['date']['raw']))
			{
				$parser = SimplePie_Parse_Date::get();
				$this->data['date']['parsed'] = $parser->parse($this->data['date']['raw']);
			}
			else
			{
				$this->data['date'] = null;
			}
		}
		if ($this->data['date'])
		{
			$date_format = (string) $date_format;
			switch ($date_format)
			{
				case '':
					return $this->sanitize($this->data['date']['raw'], SIMPLEPIE_CONSTRUCT_TEXT);

				case 'U':
					return $this->data['date']['parsed'];

				default:
					return date($date_format, $this->data['date']['parsed']);
			}
		}
		else
		{
			return null;
		}
	}

	function get_local_date($date_format = '%c')
	{
		if (!$date_format)
		{
			return $this->sanitize($this->get_date(''), SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (($date = $this->get_date('U')) !== null)
		{
			return strftime($date_format, $date);
		}
		else
		{
			return null;
		}
	}

	function get_permalink()
	{
		$link = $this->get_link();
		$enclosure = $this->get_enclosure(0);
		if ($link !== null)
		{
			return $link;
		}
		elseif ($enclosure !== null)
		{
			return $enclosure->get_link();
		}
		else
		{
			return null;
		}
	}

	function get_link($key = 0, $rel = 'alternate')
	{
		$links = $this->get_links($rel);
		if ($links[$key] !== null)
		{
			return $links[$key];
		}
		else
		{
			return null;
		}
	}

	function get_links($rel = 'alternate')
	{
		if (!isset($this->data['links']))
		{
			$this->data['links'] = array();
			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link') as $link)
			{
				if (isset($link['attribs']['']['href']))
				{
					$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
					$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));

				}
			}
			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link') as $link)
			{
				if (isset($link['attribs']['']['href']))
				{
					$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
					$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
				}
			}
			if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'guid'))
			{
				if (!isset($links[0]['attribs']['']['isPermaLink']) || strtolower(trim($links[0]['attribs']['']['isPermaLink'])) === 'true')
				{
					$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
				}
			}

			$keys = array_keys($this->data['links']);
			foreach ($keys as $key)
			{
				if (SimplePie_Misc::is_isegment_nz_nc($key))
				{
					if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
						$this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
					}
					else
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
					}
				}
				elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
				{
					$this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
				}
				$this->data['links'][$key] = array_unique($this->data['links'][$key]);
			}
		}
		if (isset($this->data['links'][$rel]))
		{
			return $this->data['links'][$rel];
		}
		else
		{
			return null;
		}
	}

	/**
	 * @todo Add ability to prefer one type of content over another (in a media group).
	 */
	function get_enclosure($key = 0, $prefer = null)
	{
		$enclosures = $this->get_enclosures();
		if (isset($enclosures[$key]))
		{
			return $enclosures[$key];
		}
		else
		{
			return null;
		}
	}

	/**
	 * Grabs all available enclosures (podcasts, etc.)
	 *
	 * Supports the <enclosure> RSS tag, as well as Media RSS and iTunes RSS.
	 *
	 * At this point, we're pretty much assuming that all enclosures for an item are the same content.  Anything else is too complicated to properly support.
	 *
	 * @todo Add support for end-user defined sorting of enclosures by type/handler (so we can prefer the faster-loading FLV over MP4).
	 * @todo If an element exists at a level, but it's value is empty, we should fall back to the value from the parent (if it exists).
	 */
	function get_enclosures()
	{
		if (!isset($this->data['enclosures']))
		{
			$this->data['enclosures'] = array();

			// Elements
			$captions_parent = null;
			$categories_parent = null;
			$copyrights_parent = null;
			$credits_parent = null;
			$description_parent = null;
			$duration_parent = null;
			$hashes_parent = null;
			$keywords_parent = null;
			$player_parent = null;
			$ratings_parent = null;
			$restrictions_parent = null;
			$thumbnails_parent = null;
			$title_parent = null;

			// Let's do the channel and item-level ones first, and just re-use them if we need to.
			$parent = $this->get_feed();

			// CAPTIONS
			if ($captions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'text'))
			{
				foreach ($captions as $caption)
				{
					$caption_type = null;
					$caption_lang = null;
					$caption_startTime = null;
					$caption_endTime = null;
					$caption_text = null;
					if (isset($caption['attribs']['']['type']))
					{
						$caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['lang']))
					{
						$caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['start']))
					{
						$caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['end']))
					{
						$caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['data']))
					{
						$caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$captions_parent[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
				}
			}
			elseif ($captions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'text'))
			{
				foreach ($captions as $caption)
				{
					$caption_type = null;
					$caption_lang = null;
					$caption_startTime = null;
					$caption_endTime = null;
					$caption_text = null;
					if (isset($caption['attribs']['']['type']))
					{
						$caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['lang']))
					{
						$caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['start']))
					{
						$caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['attribs']['']['end']))
					{
						$caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($caption['data']))
					{
						$caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$captions_parent[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
				}
			}
			if (is_array($captions_parent))
			{
				$captions_parent = array_values(SimplePie_Misc::array_unique($captions_parent));
			}

			// CATEGORIES
			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'category') as $category)
			{
				$term = null;
				$scheme = null;
				$label = null;
				if (isset($category['data']))
				{
					$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				if (isset($category['attribs']['']['scheme']))
				{
					$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				else
				{
					$scheme = 'http://search.yahoo.com/mrss/category_schema';
				}
				if (isset($category['attribs']['']['label']))
				{
					$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				$categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
			}
			foreach ((array) $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'category') as $category)
			{
				$term = null;
				$scheme = null;
				$label = null;
				if (isset($category['data']))
				{
					$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				if (isset($category['attribs']['']['scheme']))
				{
					$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				else
				{
					$scheme = 'http://search.yahoo.com/mrss/category_schema';
				}
				if (isset($category['attribs']['']['label']))
				{
					$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				$categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
			}
			foreach ((array) $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'category') as $category)
			{
				$term = null;
				$scheme = 'http://www.itunes.com/dtds/podcast-1.0.dtd';
				$label = null;
				if (isset($category['attribs']['']['text']))
				{
					$label = $this->sanitize($category['attribs']['']['text'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				$categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);

				if (isset($category['child'][SIMPLEPIE_NAMESPACE_ITUNES]['category']))
				{
					foreach ((array) $category['child'][SIMPLEPIE_NAMESPACE_ITUNES]['category'] as $subcategory)
					{
						if (isset($subcategory['attribs']['']['text']))
						{
							$label = $this->sanitize($subcategory['attribs']['']['text'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						$categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
					}
				}
			}
			if (is_array($categories_parent))
			{
				$categories_parent = array_values(SimplePie_Misc::array_unique($categories_parent));
			}

			// COPYRIGHT
			if ($copyright = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'copyright'))
			{
				$copyright_url = null;
				$copyright_label = null;
				if (isset($copyright[0]['attribs']['']['url']))
				{
					$copyright_url = $this->sanitize($copyright[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				if (isset($copyright[0]['data']))
				{
					$copyright_label = $this->sanitize($copyright[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				$copyrights_parent =& new $this->feed->copyright_class($copyright_url, $copyright_label);
			}
			elseif ($copyright = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'copyright'))
			{
				$copyright_url = null;
				$copyright_label = null;
				if (isset($copyright[0]['attribs']['']['url']))
				{
					$copyright_url = $this->sanitize($copyright[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				if (isset($copyright[0]['data']))
				{
					$copyright_label = $this->sanitize($copyright[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
				$copyrights_parent =& new $this->feed->copyright_class($copyright_url, $copyright_label);
			}

			// CREDITS
			if ($credits = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'credit'))
			{
				foreach ($credits as $credit)
				{
					$credit_role = null;
					$credit_scheme = null;
					$credit_name = null;
					if (isset($credit['attribs']['']['role']))
					{
						$credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($credit['attribs']['']['scheme']))
					{
						$credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$credit_scheme = 'urn:ebu';
					}
					if (isset($credit['data']))
					{
						$credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$credits_parent[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
				}
			}
			elseif ($credits = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'credit'))
			{
				foreach ($credits as $credit)
				{
					$credit_role = null;
					$credit_scheme = null;
					$credit_name = null;
					if (isset($credit['attribs']['']['role']))
					{
						$credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($credit['attribs']['']['scheme']))
					{
						$credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$credit_scheme = 'urn:ebu';
					}
					if (isset($credit['data']))
					{
						$credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$credits_parent[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
				}
			}
			if (is_array($credits_parent))
			{
				$credits_parent = array_values(SimplePie_Misc::array_unique($credits_parent));
			}

			// DESCRIPTION
			if ($description_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'description'))
			{
				if (isset($description_parent[0]['data']))
				{
					$description_parent = $this->sanitize($description_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
			}
			elseif ($description_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'description'))
			{
				if (isset($description_parent[0]['data']))
				{
					$description_parent = $this->sanitize($description_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
			}

			// DURATION
			if ($duration_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'duration'))
			{
				$seconds = null;
				$minutes = null;
				$hours = null;
				if (isset($duration_parent[0]['data']))
				{
					$temp = explode(':', $this->sanitize($duration_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
					if (sizeof($temp) > 0)
					{
						$seconds = (int) array_pop($temp);
					}
					if (sizeof($temp) > 0)
					{
						$minutes = (int) array_pop($temp);
						$seconds += $minutes * 60;
					}
					if (sizeof($temp) > 0)
					{
						$hours = (int) array_pop($temp);
						$seconds += $hours * 3600;
					}
					unset($temp);
					$duration_parent = $seconds;
				}
			}

			// HASHES
			if ($hashes_iterator = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'hash'))
			{
				foreach ($hashes_iterator as $hash)
				{
					$value = null;
					$algo = null;
					if (isset($hash['data']))
					{
						$value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($hash['attribs']['']['algo']))
					{
						$algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$algo = 'md5';
					}
					$hashes_parent[] = $algo.':'.$value;
				}
			}
			elseif ($hashes_iterator = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'hash'))
			{
				foreach ($hashes_iterator as $hash)
				{
					$value = null;
					$algo = null;
					if (isset($hash['data']))
					{
						$value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($hash['attribs']['']['algo']))
					{
						$algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$algo = 'md5';
					}
					$hashes_parent[] = $algo.':'.$value;
				}
			}
			if (is_array($hashes_parent))
			{
				$hashes_parent = array_values(SimplePie_Misc::array_unique($hashes_parent));
			}

			// KEYWORDS
			if ($keywords = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'keywords'))
			{
				if (isset($keywords[0]['data']))
				{
					$temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
					foreach ($temp as $word)
					{
						$keywords_parent[] = trim($word);
					}
				}
				unset($temp);
			}
			elseif ($keywords = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'keywords'))
			{
				if (isset($keywords[0]['data']))
				{
					$temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
					foreach ($temp as $word)
					{
						$keywords_parent[] = trim($word);
					}
				}
				unset($temp);
			}
			elseif ($keywords = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'keywords'))
			{
				if (isset($keywords[0]['data']))
				{
					$temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
					foreach ($temp as $word)
					{
						$keywords_parent[] = trim($word);
					}
				}
				unset($temp);
			}
			elseif ($keywords = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'keywords'))
			{
				if (isset($keywords[0]['data']))
				{
					$temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
					foreach ($temp as $word)
					{
						$keywords_parent[] = trim($word);
					}
				}
				unset($temp);
			}
			if (is_array($keywords_parent))
			{
				$keywords_parent = array_values(SimplePie_Misc::array_unique($keywords_parent));
			}

			// PLAYER
			if ($player_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'player'))
			{
				if (isset($player_parent[0]['attribs']['']['url']))
				{
					$player_parent = $this->sanitize($player_parent[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
				}
			}
			elseif ($player_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'player'))
			{
				if (isset($player_parent[0]['attribs']['']['url']))
				{
					$player_parent = $this->sanitize($player_parent[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
				}
			}

			// RATINGS
			if ($ratings = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'rating'))
			{
				foreach ($ratings as $rating)
				{
					$rating_scheme = null;
					$rating_value = null;
					if (isset($rating['attribs']['']['scheme']))
					{
						$rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$rating_scheme = 'urn:simple';
					}
					if (isset($rating['data']))
					{
						$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
				}
			}
			elseif ($ratings = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'explicit'))
			{
				foreach ($ratings as $rating)
				{
					$rating_scheme = 'urn:itunes';
					$rating_value = null;
					if (isset($rating['data']))
					{
						$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
				}
			}
			elseif ($ratings = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'rating'))
			{
				foreach ($ratings as $rating)
				{
					$rating_scheme = null;
					$rating_value = null;
					if (isset($rating['attribs']['']['scheme']))
					{
						$rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					else
					{
						$rating_scheme = 'urn:simple';
					}
					if (isset($rating['data']))
					{
						$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
				}
			}
			elseif ($ratings = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'explicit'))
			{
				foreach ($ratings as $rating)
				{
					$rating_scheme = 'urn:itunes';
					$rating_value = null;
					if (isset($rating['data']))
					{
						$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
				}
			}
			if (is_array($ratings_parent))
			{
				$ratings_parent = array_values(SimplePie_Misc::array_unique($ratings_parent));
			}

			// RESTRICTIONS
			if ($restrictions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'restriction'))
			{
				foreach ($restrictions as $restriction)
				{
					$restriction_relationship = null;
					$restriction_type = null;
					$restriction_value = null;
					if (isset($restriction['attribs']['']['relationship']))
					{
						$restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($restriction['attribs']['']['type']))
					{
						$restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($restriction['data']))
					{
						$restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
				}
			}
			elseif ($restrictions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'block'))
			{
				foreach ($restrictions as $restriction)
				{
					$restriction_relationship = 'allow';
					$restriction_type = null;
					$restriction_value = 'itunes';
					if (isset($restriction['data']) && strtolower($restriction['data']) === 'yes')
					{
						$restriction_relationship = 'deny';
					}
					$restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
				}
			}
			elseif ($restrictions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'restriction'))
			{
				foreach ($restrictions as $restriction)
				{
					$restriction_relationship = null;
					$restriction_type = null;
					$restriction_value = null;
					if (isset($restriction['attribs']['']['relationship']))
					{
						$restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($restriction['attribs']['']['type']))
					{
						$restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($restriction['data']))
					{
						$restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					$restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
				}
			}
			elseif ($restrictions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'block'))
			{
				foreach ($restrictions as $restriction)
				{
					$restriction_relationship = 'allow';
					$restriction_type = null;
					$restriction_value = 'itunes';
					if (isset($restriction['data']) && strtolower($restriction['data']) === 'yes')
					{
						$restriction_relationship = 'deny';
					}
					$restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
				}
			}
			if (is_array($restrictions_parent))
			{
				$restrictions_parent = array_values(SimplePie_Misc::array_unique($restrictions_parent));
			}

			// THUMBNAILS
			if ($thumbnails = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'thumbnail'))
			{
				foreach ($thumbnails as $thumbnail)
				{
					if (isset($thumbnail['attribs']['']['url']))
					{
						$thumbnails_parent[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
					}
				}
			}
			elseif ($thumbnails = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'thumbnail'))
			{
				foreach ($thumbnails as $thumbnail)
				{
					if (isset($thumbnail['attribs']['']['url']))
					{
						$thumbnails_parent[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
					}
				}
			}

			// TITLES
			if ($title_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'title'))
			{
				if (isset($title_parent[0]['data']))
				{
					$title_parent = $this->sanitize($title_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
			}
			elseif ($title_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'title'))
			{
				if (isset($title_parent[0]['data']))
				{
					$title_parent = $this->sanitize($title_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
				}
			}

			// Clear the memory
			unset($parent);

			// Attributes
			$bitrate = null;
			$channels = null;
			$duration = null;
			$expression = null;
			$framerate = null;
			$height = null;
			$javascript = null;
			$lang = null;
			$length = null;
			$medium = null;
			$samplingrate = null;
			$type = null;
			$url = null;
			$width = null;

			// Elements
			$captions = null;
			$categories = null;
			$copyrights = null;
			$credits = null;
			$description = null;
			$hashes = null;
			$keywords = null;
			$player = null;
			$ratings = null;
			$restrictions = null;
			$thumbnails = null;
			$title = null;

			// If we have media:group tags, loop through them.
			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'group') as $group)
			{
				// If we have media:content tags, loop through them.
				foreach ((array) $group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content'] as $content)
				{
					if (isset($content['attribs']['']['url']))
					{
						// Attributes
						$bitrate = null;
						$channels = null;
						$duration = null;
						$expression = null;
						$framerate = null;
						$height = null;
						$javascript = null;
						$lang = null;
						$length = null;
						$medium = null;
						$samplingrate = null;
						$type = null;
						$url = null;
						$width = null;

						// Elements
						$captions = null;
						$categories = null;
						$copyrights = null;
						$credits = null;
						$description = null;
						$hashes = null;
						$keywords = null;
						$player = null;
						$ratings = null;
						$restrictions = null;
						$thumbnails = null;
						$title = null;

						// Start checking the attributes of media:content
						if (isset($content['attribs']['']['bitrate']))
						{
							$bitrate = $this->sanitize($content['attribs']['']['bitrate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['channels']))
						{
							$channels = $this->sanitize($content['attribs']['']['channels'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['duration']))
						{
							$duration = $this->sanitize($content['attribs']['']['duration'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$duration = $duration_parent;
						}
						if (isset($content['attribs']['']['expression']))
						{
							$expression = $this->sanitize($content['attribs']['']['expression'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['framerate']))
						{
							$framerate = $this->sanitize($content['attribs']['']['framerate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['height']))
						{
							$height = $this->sanitize($content['attribs']['']['height'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['lang']))
						{
							$lang = $this->sanitize($content['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['fileSize']))
						{
							$length = ceil($content['attribs']['']['fileSize']);
						}
						if (isset($content['attribs']['']['medium']))
						{
							$medium = $this->sanitize($content['attribs']['']['medium'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['samplingrate']))
						{
							$samplingrate = $this->sanitize($content['attribs']['']['samplingrate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['type']))
						{
							$type = $this->sanitize($content['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['width']))
						{
							$width = $this->sanitize($content['attribs']['']['width'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						$url = $this->sanitize($content['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);

						// Checking the other optional media: elements. Priority: media:content, media:group, item, channel

						// CAPTIONS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text'] as $caption)
							{
								$caption_type = null;
								$caption_lang = null;
								$caption_startTime = null;
								$caption_endTime = null;
								$caption_text = null;
								if (isset($caption['attribs']['']['type']))
								{
									$caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['lang']))
								{
									$caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['start']))
								{
									$caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['end']))
								{
									$caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['data']))
								{
									$caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$captions[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
							}
							if (is_array($captions))
							{
								$captions = array_values(SimplePie_Misc::array_unique($captions));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text'] as $caption)
							{
								$caption_type = null;
								$caption_lang = null;
								$caption_startTime = null;
								$caption_endTime = null;
								$caption_text = null;
								if (isset($caption['attribs']['']['type']))
								{
									$caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['lang']))
								{
									$caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['start']))
								{
									$caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['end']))
								{
									$caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['data']))
								{
									$caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$captions[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
							}
							if (is_array($captions))
							{
								$captions = array_values(SimplePie_Misc::array_unique($captions));
							}
						}
						else
						{
							$captions = $captions_parent;
						}

						// CATEGORIES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category']))
						{
							foreach ((array) $content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category'] as $category)
							{
								$term = null;
								$scheme = null;
								$label = null;
								if (isset($category['data']))
								{
									$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($category['attribs']['']['scheme']))
								{
									$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$scheme = 'http://search.yahoo.com/mrss/category_schema';
								}
								if (isset($category['attribs']['']['label']))
								{
									$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$categories[] =& new $this->feed->category_class($term, $scheme, $label);
							}
						}
						if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category']))
						{
							foreach ((array) $group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category'] as $category)
							{
								$term = null;
								$scheme = null;
								$label = null;
								if (isset($category['data']))
								{
									$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($category['attribs']['']['scheme']))
								{
									$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$scheme = 'http://search.yahoo.com/mrss/category_schema';
								}
								if (isset($category['attribs']['']['label']))
								{
									$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$categories[] =& new $this->feed->category_class($term, $scheme, $label);
							}
						}
						if (is_array($categories) && is_array($categories_parent))
						{
							$categories = array_values(SimplePie_Misc::array_unique(array_merge($categories, $categories_parent)));
						}
						elseif (is_array($categories))
						{
							$categories = array_values(SimplePie_Misc::array_unique($categories));
						}
						elseif (is_array($categories_parent))
						{
							$categories = array_values(SimplePie_Misc::array_unique($categories_parent));
						}

						// COPYRIGHTS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright']))
						{
							$copyright_url = null;
							$copyright_label = null;
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url']))
							{
								$copyright_url = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data']))
							{
								$copyright_label = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							$copyrights =& new $this->feed->copyright_class($copyright_url, $copyright_label);
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright']))
						{
							$copyright_url = null;
							$copyright_label = null;
							if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url']))
							{
								$copyright_url = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data']))
							{
								$copyright_label = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							$copyrights =& new $this->feed->copyright_class($copyright_url, $copyright_label);
						}
						else
						{
							$copyrights = $copyrights_parent;
						}

						// CREDITS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit'] as $credit)
							{
								$credit_role = null;
								$credit_scheme = null;
								$credit_name = null;
								if (isset($credit['attribs']['']['role']))
								{
									$credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($credit['attribs']['']['scheme']))
								{
									$credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$credit_scheme = 'urn:ebu';
								}
								if (isset($credit['data']))
								{
									$credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$credits[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
							}
							if (is_array($credits))
							{
								$credits = array_values(SimplePie_Misc::array_unique($credits));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit'] as $credit)
							{
								$credit_role = null;
								$credit_scheme = null;
								$credit_name = null;
								if (isset($credit['attribs']['']['role']))
								{
									$credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($credit['attribs']['']['scheme']))
								{
									$credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$credit_scheme = 'urn:ebu';
								}
								if (isset($credit['data']))
								{
									$credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$credits[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
							}
							if (is_array($credits))
							{
								$credits = array_values(SimplePie_Misc::array_unique($credits));
							}
						}
						else
						{
							$credits = $credits_parent;
						}

						// DESCRIPTION
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description']))
						{
							$description = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description']))
						{
							$description = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$description = $description_parent;
						}

						// HASHES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash'] as $hash)
							{
								$value = null;
								$algo = null;
								if (isset($hash['data']))
								{
									$value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($hash['attribs']['']['algo']))
								{
									$algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$algo = 'md5';
								}
								$hashes[] = $algo.':'.$value;
							}
							if (is_array($hashes))
							{
								$hashes = array_values(SimplePie_Misc::array_unique($hashes));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash'] as $hash)
							{
								$value = null;
								$algo = null;
								if (isset($hash['data']))
								{
									$value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($hash['attribs']['']['algo']))
								{
									$algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$algo = 'md5';
								}
								$hashes[] = $algo.':'.$value;
							}
							if (is_array($hashes))
							{
								$hashes = array_values(SimplePie_Misc::array_unique($hashes));
							}
						}
						else
						{
							$hashes = $hashes_parent;
						}

						// KEYWORDS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords']))
						{
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data']))
							{
								$temp = explode(',', $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
								foreach ($temp as $word)
								{
									$keywords[] = trim($word);
								}
								unset($temp);
							}
							if (is_array($keywords))
							{
								$keywords = array_values(SimplePie_Misc::array_unique($keywords));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords']))
						{
							if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data']))
							{
								$temp = explode(',', $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
								foreach ($temp as $word)
								{
									$keywords[] = trim($word);
								}
								unset($temp);
							}
							if (is_array($keywords))
							{
								$keywords = array_values(SimplePie_Misc::array_unique($keywords));
							}
						}
						else
						{
							$keywords = $keywords_parent;
						}

						// PLAYER
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player']))
						{
							$player = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player']))
						{
							$player = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
						}
						else
						{
							$player = $player_parent;
						}

						// RATINGS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating'] as $rating)
							{
								$rating_scheme = null;
								$rating_value = null;
								if (isset($rating['attribs']['']['scheme']))
								{
									$rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$rating_scheme = 'urn:simple';
								}
								if (isset($rating['data']))
								{
									$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$ratings[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
							}
							if (is_array($ratings))
							{
								$ratings = array_values(SimplePie_Misc::array_unique($ratings));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating'] as $rating)
							{
								$rating_scheme = null;
								$rating_value = null;
								if (isset($rating['attribs']['']['scheme']))
								{
									$rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$rating_scheme = 'urn:simple';
								}
								if (isset($rating['data']))
								{
									$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$ratings[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
							}
							if (is_array($ratings))
							{
								$ratings = array_values(SimplePie_Misc::array_unique($ratings));
							}
						}
						else
						{
							$ratings = $ratings_parent;
						}

						// RESTRICTIONS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction'] as $restriction)
							{
								$restriction_relationship = null;
								$restriction_type = null;
								$restriction_value = null;
								if (isset($restriction['attribs']['']['relationship']))
								{
									$restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['attribs']['']['type']))
								{
									$restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['data']))
								{
									$restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$restrictions[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
							}
							if (is_array($restrictions))
							{
								$restrictions = array_values(SimplePie_Misc::array_unique($restrictions));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction'] as $restriction)
							{
								$restriction_relationship = null;
								$restriction_type = null;
								$restriction_value = null;
								if (isset($restriction['attribs']['']['relationship']))
								{
									$restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['attribs']['']['type']))
								{
									$restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['data']))
								{
									$restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$restrictions[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
							}
							if (is_array($restrictions))
							{
								$restrictions = array_values(SimplePie_Misc::array_unique($restrictions));
							}
						}
						else
						{
							$restrictions = $restrictions_parent;
						}

						// THUMBNAILS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail'] as $thumbnail)
							{
								$thumbnails[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
							}
							if (is_array($thumbnails))
							{
								$thumbnails = array_values(SimplePie_Misc::array_unique($thumbnails));
							}
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail']))
						{
							foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail'] as $thumbnail)
							{
								$thumbnails[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
							}
							if (is_array($thumbnails))
							{
								$thumbnails = array_values(SimplePie_Misc::array_unique($thumbnails));
							}
						}
						else
						{
							$thumbnails = $thumbnails_parent;
						}

						// TITLES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title']))
						{
							$title = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title']))
						{
							$title = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$title = $title_parent;
						}

						$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions, $categories, $channels, $copyrights, $credits, $description, $duration, $expression, $framerate, $hashes, $height, $keywords, $lang, $medium, $player, $ratings, $restrictions, $samplingrate, $thumbnails, $title, $width);
					}
				}
			}

			// If we have standalone media:content tags, loop through them.
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content']))
			{
				foreach ((array) $this->data['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content'] as $content)
				{
					if (isset($content['attribs']['']['url']))
					{
						// Attributes
						$bitrate = null;
						$channels = null;
						$duration = null;
						$expression = null;
						$framerate = null;
						$height = null;
						$javascript = null;
						$lang = null;
						$length = null;
						$medium = null;
						$samplingrate = null;
						$type = null;
						$url = null;
						$width = null;

						// Elements
						$captions = null;
						$categories = null;
						$copyrights = null;
						$credits = null;
						$description = null;
						$hashes = null;
						$keywords = null;
						$player = null;
						$ratings = null;
						$restrictions = null;
						$thumbnails = null;
						$title = null;

						// Start checking the attributes of media:content
						if (isset($content['attribs']['']['bitrate']))
						{
							$bitrate = $this->sanitize($content['attribs']['']['bitrate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['channels']))
						{
							$channels = $this->sanitize($content['attribs']['']['channels'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['duration']))
						{
							$duration = $this->sanitize($content['attribs']['']['duration'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$duration = $duration_parent;
						}
						if (isset($content['attribs']['']['expression']))
						{
							$expression = $this->sanitize($content['attribs']['']['expression'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['framerate']))
						{
							$framerate = $this->sanitize($content['attribs']['']['framerate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['height']))
						{
							$height = $this->sanitize($content['attribs']['']['height'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['lang']))
						{
							$lang = $this->sanitize($content['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['fileSize']))
						{
							$length = ceil($content['attribs']['']['fileSize']);
						}
						if (isset($content['attribs']['']['medium']))
						{
							$medium = $this->sanitize($content['attribs']['']['medium'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['samplingrate']))
						{
							$samplingrate = $this->sanitize($content['attribs']['']['samplingrate'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['type']))
						{
							$type = $this->sanitize($content['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						if (isset($content['attribs']['']['width']))
						{
							$width = $this->sanitize($content['attribs']['']['width'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						$url = $this->sanitize($content['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);

						// Checking the other optional media: elements. Priority: media:content, media:group, item, channel

						// CAPTIONS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text'] as $caption)
							{
								$caption_type = null;
								$caption_lang = null;
								$caption_startTime = null;
								$caption_endTime = null;
								$caption_text = null;
								if (isset($caption['attribs']['']['type']))
								{
									$caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['lang']))
								{
									$caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['start']))
								{
									$caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['attribs']['']['end']))
								{
									$caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($caption['data']))
								{
									$caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$captions[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
							}
							if (is_array($captions))
							{
								$captions = array_values(SimplePie_Misc::array_unique($captions));
							}
						}
						else
						{
							$captions = $captions_parent;
						}

						// CATEGORIES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category']))
						{
							foreach ((array) $content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category'] as $category)
							{
								$term = null;
								$scheme = null;
								$label = null;
								if (isset($category['data']))
								{
									$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($category['attribs']['']['scheme']))
								{
									$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$scheme = 'http://search.yahoo.com/mrss/category_schema';
								}
								if (isset($category['attribs']['']['label']))
								{
									$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$categories[] =& new $this->feed->category_class($term, $scheme, $label);
							}
						}
						if (is_array($categories) && is_array($categories_parent))
						{
							$categories = array_values(SimplePie_Misc::array_unique(array_merge($categories, $categories_parent)));
						}
						elseif (is_array($categories))
						{
							$categories = array_values(SimplePie_Misc::array_unique($categories));
						}
						elseif (is_array($categories_parent))
						{
							$categories = array_values(SimplePie_Misc::array_unique($categories_parent));
						}
						else
						{
							$categories = null;
						}

						// COPYRIGHTS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright']))
						{
							$copyright_url = null;
							$copyright_label = null;
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url']))
							{
								$copyright_url = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data']))
							{
								$copyright_label = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
							}
							$copyrights =& new $this->feed->copyright_class($copyright_url, $copyright_label);
						}
						else
						{
							$copyrights = $copyrights_parent;
						}

						// CREDITS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit'] as $credit)
							{
								$credit_role = null;
								$credit_scheme = null;
								$credit_name = null;
								if (isset($credit['attribs']['']['role']))
								{
									$credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($credit['attribs']['']['scheme']))
								{
									$credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$credit_scheme = 'urn:ebu';
								}
								if (isset($credit['data']))
								{
									$credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$credits[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
							}
							if (is_array($credits))
							{
								$credits = array_values(SimplePie_Misc::array_unique($credits));
							}
						}
						else
						{
							$credits = $credits_parent;
						}

						// DESCRIPTION
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description']))
						{
							$description = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$description = $description_parent;
						}

						// HASHES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash'] as $hash)
							{
								$value = null;
								$algo = null;
								if (isset($hash['data']))
								{
									$value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($hash['attribs']['']['algo']))
								{
									$algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$algo = 'md5';
								}
								$hashes[] = $algo.':'.$value;
							}
							if (is_array($hashes))
							{
								$hashes = array_values(SimplePie_Misc::array_unique($hashes));
							}
						}
						else
						{
							$hashes = $hashes_parent;
						}

						// KEYWORDS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords']))
						{
							if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data']))
							{
								$temp = explode(',', $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
								foreach ($temp as $word)
								{
									$keywords[] = trim($word);
								}
								unset($temp);
							}
							if (is_array($keywords))
							{
								$keywords = array_values(SimplePie_Misc::array_unique($keywords));
							}
						}
						else
						{
							$keywords = $keywords_parent;
						}

						// PLAYER
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player']))
						{
							$player = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
						}
						else
						{
							$player = $player_parent;
						}

						// RATINGS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating'] as $rating)
							{
								$rating_scheme = null;
								$rating_value = null;
								if (isset($rating['attribs']['']['scheme']))
								{
									$rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								else
								{
									$rating_scheme = 'urn:simple';
								}
								if (isset($rating['data']))
								{
									$rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$ratings[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
							}
							if (is_array($ratings))
							{
								$ratings = array_values(SimplePie_Misc::array_unique($ratings));
							}
						}
						else
						{
							$ratings = $ratings_parent;
						}

						// RESTRICTIONS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['restriction'] as $restriction)
							{
								$restriction_relationship = null;
								$restriction_type = null;
								$restriction_value = null;
								if (isset($restriction['attribs']['']['relationship']))
								{
									$restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['attribs']['']['type']))
								{
									$restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								if (isset($restriction['data']))
								{
									$restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
								}
								$restrictions[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
							}
							if (is_array($restrictions))
							{
								$restrictions = array_values(SimplePie_Misc::array_unique($restrictions));
							}
						}
						else
						{
							$restrictions = $restrictions_parent;
						}

						// THUMBNAILS
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail']))
						{
							foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['thumbnail'] as $thumbnail)
							{
								$thumbnails[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
							}
							if (is_array($thumbnails))
							{
								$thumbnails = array_values(SimplePie_Misc::array_unique($thumbnails));
							}
						}
						else
						{
							$thumbnails = $thumbnails_parent;
						}

						// TITLES
						if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title']))
						{
							$title = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['title'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
						}
						else
						{
							$title = $title_parent;
						}

						$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions, $categories, $channels, $copyrights, $credits, $description, $duration, $expression, $framerate, $hashes, $height, $keywords, $lang, $medium, $player, $ratings, $restrictions, $samplingrate, $thumbnails, $title, $width);
					}
				}
			}

			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link') as $link)
			{
				if (isset($link['attribs']['']['href']) && !empty($link['attribs']['']['rel']) && $link['attribs']['']['rel'] === 'enclosure')
				{
					// Attributes
					$bitrate = null;
					$channels = null;
					$duration = null;
					$expression = null;
					$framerate = null;
					$height = null;
					$javascript = null;
					$lang = null;
					$length = null;
					$medium = null;
					$samplingrate = null;
					$type = null;
					$url = null;
					$width = null;

					$url = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
					if (isset($link['attribs']['']['type']))
					{
						$type = $this->sanitize($link['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($link['attribs']['']['length']))
					{
						$length = ceil($link['attribs']['']['length']);
					}

					// Since we don't have group or content for these, we'll just pass the '*_parent' variables directly to the constructor
					$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions_parent, $categories_parent, $channels, $copyrights_parent, $credits_parent, $description_parent, $duration_parent, $expression, $framerate, $hashes_parent, $height, $keywords_parent, $lang, $medium, $player_parent, $ratings_parent, $restrictions_parent, $samplingrate, $thumbnails_parent, $title_parent, $width);
				}
			}

			foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link') as $link)
			{
				if (isset($link['attribs']['']['href']) && !empty($link['attribs']['']['rel']) && $link['attribs']['']['rel'] === 'enclosure')
				{
					// Attributes
					$bitrate = null;
					$channels = null;
					$duration = null;
					$expression = null;
					$framerate = null;
					$height = null;
					$javascript = null;
					$lang = null;
					$length = null;
					$medium = null;
					$samplingrate = null;
					$type = null;
					$url = null;
					$width = null;

					$url = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
					if (isset($link['attribs']['']['type']))
					{
						$type = $this->sanitize($link['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($link['attribs']['']['length']))
					{
						$length = ceil($link['attribs']['']['length']);
					}

					// Since we don't have group or content for these, we'll just pass the '*_parent' variables directly to the constructor
					$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions_parent, $categories_parent, $channels, $copyrights_parent, $credits_parent, $description_parent, $duration_parent, $expression, $framerate, $hashes_parent, $height, $keywords_parent, $lang, $medium, $player_parent, $ratings_parent, $restrictions_parent, $samplingrate, $thumbnails_parent, $title_parent, $width);
				}
			}

			if ($enclosure = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'enclosure'))
			{
				if (isset($enclosure[0]['attribs']['']['url']))
				{
					// Attributes
					$bitrate = null;
					$channels = null;
					$duration = null;
					$expression = null;
					$framerate = null;
					$height = null;
					$javascript = null;
					$lang = null;
					$length = null;
					$medium = null;
					$samplingrate = null;
					$type = null;
					$url = null;
					$width = null;

					$url = $this->sanitize($enclosure[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($enclosure[0]));
					if (isset($enclosure[0]['attribs']['']['type']))
					{
						$type = $this->sanitize($enclosure[0]['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
					}
					if (isset($enclosure[0]['attribs']['']['length']))
					{
						$length = ceil($enclosure[0]['attribs']['']['length']);
					}

					// Since we don't have group or content for these, we'll just pass the '*_parent' variables directly to the constructor
					$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions_parent, $categories_parent, $channels, $copyrights_parent, $credits_parent, $description_parent, $duration_parent, $expression, $framerate, $hashes_parent, $height, $keywords_parent, $lang, $medium, $player_parent, $ratings_parent, $restrictions_parent, $samplingrate, $thumbnails_parent, $title_parent, $width);
				}
			}

			if (sizeof($this->data['enclosures']) === 0 && ($url || $type || $length || $bitrate || $captions_parent || $categories_parent || $channels || $copyrights_parent || $credits_parent || $description_parent || $duration_parent || $expression || $framerate || $hashes_parent || $height || $keywords_parent || $lang || $medium || $player_parent || $ratings_parent || $restrictions_parent || $samplingrate || $thumbnails_parent || $title_parent || $width))
			{
				// Since we don't have group or content for these, we'll just pass the '*_parent' variables directly to the constructor
				$this->data['enclosures'][] =& new $this->feed->enclosure_class($url, $type, $length, $this->feed->javascript, $bitrate, $captions_parent, $categories_parent, $channels, $copyrights_parent, $credits_parent, $description_parent, $duration_parent, $expression, $framerate, $hashes_parent, $height, $keywords_parent, $lang, $medium, $player_parent, $ratings_parent, $restrictions_parent, $samplingrate, $thumbnails_parent, $title_parent, $width);
			}

			$this->data['enclosures'] = array_values(SimplePie_Misc::array_unique($this->data['enclosures']));
		}
		if (!empty($this->data['enclosures']))
		{
			return $this->data['enclosures'];
		}
		else
		{
			return null;
		}
	}

	function get_latitude()
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lat'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[1];
		}
		else
		{
			return null;
		}
	}

	function get_longitude()
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
		{
			return (float) $return[0]['data'];
		}
		elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lon'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[2];
		}
		else
		{
			return null;
		}
	}

	function get_source()
	{
		if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'source'))
		{
			return new $this->feed->source_class($this, $return[0]);
		}
		else
		{
			return null;
		}
	}

	/**
	 * Creates the add_to_* methods' return data
	 *
	 * @access private
	 * @param string $item_url String to prefix to the item permalink
	 * @param string $title_url String to prefix to the item title
	 * (and suffix to the item permalink)
	 * @return mixed URL if feed exists, false otherwise
	 */
	function add_to_service($item_url, $title_url = null, $summary_url = null)
	{
		if ($this->get_permalink() !== null)
		{
			$return = $item_url . rawurlencode($this->get_permalink());
			if ($title_url !== null && $this->get_title() !== null)
			{
				$return .= $title_url . rawurlencode($this->get_title());
			}
			if ($summary_url !== null && $this->get_description() !== null)
			{
				$return .= $summary_url . rawurlencode($this->get_description());
			}
			return $this->sanitize($return, SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

	function add_to_blinklist()
	{
		return $this->add_to_service('http://www.blinklist.com/index.php?Action=Blink/addblink.php&Description=&Url=', '&Title=');
	}

	function add_to_blogmarks()
	{
		return $this->add_to_service('http://blogmarks.net/my/new.php?mini=1&simple=1&url=', '&title=');
	}

	function add_to_delicious()
	{
		return $this->add_to_service('http://del.icio.us/post/?v=4&url=', '&title=');
	}

	function add_to_digg()
	{
		return $this->add_to_service('http://digg.com/submit?url=', '&title=', '&bodytext=');
	}

	function add_to_furl()
	{
		return $this->add_to_service('http://www.furl.net/storeIt.jsp?u=', '&t=');
	}

	function add_to_magnolia()
	{
		return $this->add_to_service('http://ma.gnolia.com/bookmarklet/add?url=', '&title=');
	}

	function add_to_myweb20()
	{
		return $this->add_to_service('http://myweb2.search.yahoo.com/myresults/bookmarklet?u=', '&t=');
	}

	function add_to_newsvine()
	{
		return $this->add_to_service('http://www.newsvine.com/_wine/save?u=', '&h=');
	}

	function add_to_reddit()
	{
		return $this->add_to_service('http://reddit.com/submit?url=', '&title=');
	}

	function add_to_segnalo()
	{
		return $this->add_to_service('http://segnalo.com/post.html.php?url=', '&title=');
	}

	function add_to_simpy()
	{
		return $this->add_to_service('http://www.simpy.com/simpy/LinkAdd.do?href=', '&title=');
	}

	function add_to_spurl()
	{
		return $this->add_to_service('http://www.spurl.net/spurl.php?v=3&url=', '&title=');
	}

	function add_to_wists()
	{
		return $this->add_to_service('http://wists.com/r.php?c=&r=', '&title=');
	}

	function search_technorati()
	{
		return $this->add_to_service('http://www.technorati.com/search/');
	}
}

class SimplePie_Source
{
	var $item;
	var $data = array();

	function SimplePie_Source($item, $data)
	{
		$this->item = $item;
		$this->data = $data;
	}

	function __toString()
	{
		return md5(serialize($this->data));
	}

	function get_source_tags($namespace, $tag)
	{
		if (isset($this->data['child'][$namespace][$tag]))
		{
			return $this->data['child'][$namespace][$tag];
		}
		else
		{
			return null;
		}
	}

	function get_base($element = array())
	{
		return $this->item->get_base($element);
	}

	function sanitize($data, $type, $base = '')
	{
		return $this->item->sanitize($data, $type, $base);
	}

	function get_item()
	{
		return $this->item;
	}

	function get_title()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_category($key = 0)
	{
		$categories = $this->get_categories();
		if (isset($categories[$key]))
		{
			return $categories[$key];
		}
		else
		{
			return null;
		}
	}

	function get_categories()
	{
		$categories = array();

		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
		{
			$term = null;
			$scheme = null;
			$label = null;
			if (isset($category['attribs']['']['term']))
			{
				$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['scheme']))
			{
				$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['label']))
			{
				$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			$categories[] =& new $this->item->feed->category_class($term, $scheme, $label);
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
		{
			// This is really the label, but keep this as the term also for BC.
			// Label will also work on retrieving because that falls back to term.
			$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			if (isset($category['attribs']['']['domain']))
			{
				$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			else
			{
				$scheme = null;
			}
			$categories[] =& new $this->item->feed->category_class($term, $scheme, null);
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
		{
			$categories[] =& new $this->item->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
		{
			$categories[] =& new $this->item->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($categories))
		{
			return SimplePie_Misc::array_unique($categories);
		}
		else
		{
			return null;
		}
	}

	function get_author($key = 0)
	{
		$authors = $this->get_authors();
		if (isset($authors[$key]))
		{
			return $authors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_authors()
	{
		$authors = array();
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$authors[] =& new $this->item->feed->author_class($name, $uri, $email);
			}
		}
		if ($author = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$authors[] =& new $this->item->feed->author_class($name, $url, $email);
			}
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
		{
			$authors[] =& new $this->item->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
		{
			$authors[] =& new $this->item->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
		{
			$authors[] =& new $this->item->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

		if (!empty($authors))
		{
			return SimplePie_Misc::array_unique($authors);
		}
		else
		{
			return null;
		}
	}

	function get_contributor($key = 0)
	{
		$contributors = $this->get_contributors();
		if (isset($contributors[$key]))
		{
			return $contributors[$key];
		}
		else
		{
			return null;
		}
	}

	function get_contributors()
	{
		$contributors = array();
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$contributors[] =& new $this->item->feed->author_class($name, $uri, $email);
			}
		}
		foreach ((array) $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$contributors[] =& new $this->item->feed->author_class($name, $url, $email);
			}
		}

		if (!empty($contributors))
		{
			return SimplePie_Misc::array_unique($contributors);
		}
		else
		{
			return null;
		}
	}

	function get_link($key = 0, $rel = 'alternate')
	{
		$links = $this->get_links($rel);
		if (isset($links[$key]))
		{
			return $links[$key];
		}
		else
		{
			return null;
		}
	}

	/**
	 * Added for parity between the parent-level and the item/entry-level.
	 */
	function get_permalink()
	{
		return $this->get_link(0);
	}

	function get_links($rel = 'alternate')
	{
		if (!isset($this->data['links']))
		{
			$this->data['links'] = array();
			if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link'))
			{
				foreach ($links as $link)
				{
					if (isset($link['attribs']['']['href']))
					{
						$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
						$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
					}
				}
			}
			if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link'))
			{
				foreach ($links as $link)
				{
					if (isset($link['attribs']['']['href']))
					{
						$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
						$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));

					}
				}
			}
			if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}
			if ($links = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
			{
				$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
			}

			$keys = array_keys($this->data['links']);
			foreach ($keys as $key)
			{
				if (SimplePie_Misc::is_isegment_nz_nc($key))
				{
					if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
						$this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
					}
					else
					{
						$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
					}
				}
				elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
				{
					$this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
				}
				$this->data['links'][$key] = array_unique($this->data['links'][$key]);
			}
		}

		if (isset($this->data['links'][$rel]))
		{
			return $this->data['links'][$rel];
		}
		else
		{
			return null;
		}
	}

	function get_description()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'tagline'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
		}
		else
		{
			return null;
		}
	}

	function get_copyright()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'copyright'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'copyright'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_language()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_11, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_DC_10, 'language'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif (isset($this->data['xml_lang']))
		{
			return $this->sanitize($this->data['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

	function get_latitude()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lat'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[1];
		}
		else
		{
			return null;
		}
	}

	function get_longitude()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
		{
			return (float) $return[0]['data'];
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lon'))
		{
			return (float) $return[0]['data'];
		}
		elseif (($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', $return[0]['data'], $match))
		{
			return (float) $match[2];
		}
		else
		{
			return null;
		}
	}

	function get_image_url()
	{
		if ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'image'))
		{
			return $this->sanitize($return[0]['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI);
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'logo'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_source_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Author
{
	var $name;
	var $link;
	var $email;

	// Constructor, used to input the data
	function SimplePie_Author($name = null, $link = null, $email = null)
	{
		$this->name = $name;
		$this->link = $link;
		$this->email = $email;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_name()
	{
		if ($this->name !== null)
		{
			return $this->name;
		}
		else
		{
			return null;
		}
	}

	function get_link()
	{
		if ($this->link !== null)
		{
			return $this->link;
		}
		else
		{
			return null;
		}
	}

	function get_email()
	{
		if ($this->email !== null)
		{
			return $this->email;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Category
{
	var $term;
	var $scheme;
	var $label;

	// Constructor, used to input the data
	function SimplePie_Category($term = null, $scheme = null, $label = null)
	{
		$this->term = $term;
		$this->scheme = $scheme;
		$this->label = $label;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_term()
	{
		if ($this->term !== null)
		{
			return $this->term;
		}
		else
		{
			return null;
		}
	}

	function get_scheme()
	{
		if ($this->scheme !== null)
		{
			return $this->scheme;
		}
		else
		{
			return null;
		}
	}

	function get_label()
	{
		if ($this->label !== null)
		{
			return $this->label;
		}
		else
		{
			return $this->get_term();
		}
	}
}

class SimplePie_Enclosure
{
	var $bitrate;
	var $captions;
	var $categories;
	var $channels;
	var $copyright;
	var $credits;
	var $description;
	var $duration;
	var $expression;
	var $framerate;
	var $handler;
	var $hashes;
	var $height;
	var $javascript;
	var $keywords;
	var $lang;
	var $length;
	var $link;
	var $medium;
	var $player;
	var $ratings;
	var $restrictions;
	var $samplingrate;
	var $thumbnails;
	var $title;
	var $type;
	var $width;

	// Constructor, used to input the data
	function SimplePie_Enclosure($link = null, $type = null, $length = null, $javascript = null, $bitrate = null, $captions = null, $categories = null, $channels = null, $copyright = null, $credits = null, $description = null, $duration = null, $expression = null, $framerate = null, $hashes = null, $height = null, $keywords = null, $lang = null, $medium = null, $player = null, $ratings = null, $restrictions = null, $samplingrate = null, $thumbnails = null, $title = null, $width = null)
	{
		$this->bitrate = $bitrate;
		$this->captions = $captions;
		$this->categories = $categories;
		$this->channels = $channels;
		$this->copyright = $copyright;
		$this->credits = $credits;
		$this->description = $description;
		$this->duration = $duration;
		$this->expression = $expression;
		$this->framerate = $framerate;
		$this->hashes = $hashes;
		$this->height = $height;
		$this->javascript = $javascript;
		$this->keywords = $keywords;
		$this->lang = $lang;
		$this->length = $length;
		$this->link = $link;
		$this->medium = $medium;
		$this->player = $player;
		$this->ratings = $ratings;
		$this->restrictions = $restrictions;
		$this->samplingrate = $samplingrate;
		$this->thumbnails = $thumbnails;
		$this->title = $title;
		$this->type = $type;
		$this->width = $width;
		if (class_exists('idna_convert'))
		{
			$idn =& new idna_convert;
			$parsed = SimplePie_Misc::parse_url($link);
			$this->link = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']);
		}
		$this->handler = $this->get_handler(); // Needs to load last
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_bitrate()
	{
		if ($this->bitrate !== null)
		{
			return $this->bitrate;
		}
		else
		{
			return null;
		}
	}

	function get_caption($key = 0)
	{
		$captions = $this->get_captions();
		if (isset($captions[$key]))
		{
			return $captions[$key];
		}
		else
		{
			return null;
		}
	}

	function get_captions()
	{
		if ($this->captions !== null)
		{
			return $this->captions;
		}
		else
		{
			return null;
		}
	}

	function get_category($key = 0)
	{
		$categories = $this->get_categories();
		if (isset($categories[$key]))
		{
			return $categories[$key];
		}
		else
		{
			return null;
		}
	}

	function get_categories()
	{
		if ($this->categories !== null)
		{
			return $this->categories;
		}
		else
		{
			return null;
		}
	}

	function get_channels()
	{
		if ($this->channels !== null)
		{
			return $this->channels;
		}
		else
		{
			return null;
		}
	}

	function get_copyright()
	{
		if ($this->copyright !== null)
		{
			return $this->copyright;
		}
		else
		{
			return null;
		}
	}

	function get_credit($key = 0)
	{
		$credits = $this->get_credits();
		if (isset($credits[$key]))
		{
			return $credits[$key];
		}
		else
		{
			return null;
		}
	}

	function get_credits()
	{
		if ($this->credits !== null)
		{
			return $this->credits;
		}
		else
		{
			return null;
		}
	}

	function get_description()
	{
		if ($this->description !== null)
		{
			return $this->description;
		}
		else
		{
			return null;
		}
	}

	function get_duration($convert = false)
	{
		if ($this->duration !== null)
		{
			if ($convert)
			{
				$time = SimplePie_Misc::time_hms($this->duration);
				return $time;
			}
			else
			{
				return $this->duration;
			}
		}
		else
		{
			return null;
		}
	}

	function get_expression()
	{
		if ($this->expression !== null)
		{
			return $this->expression;
		}
		else
		{
			return 'full';
		}
	}

	function get_extension()
	{
		if ($this->link !== null)
		{
			$url = SimplePie_Misc::parse_url($this->link);
			if ($url['path'] !== '')
			{
				return pathinfo($url['path'], PATHINFO_EXTENSION);
			}
		}
		return null;
	}

	function get_framerate()
	{
		if ($this->framerate !== null)
		{
			return $this->framerate;
		}
		else
		{
			return null;
		}
	}

	function get_handler()
	{
		return $this->get_real_type(true);
	}

	function get_hash($key = 0)
	{
		$hashes = $this->get_hashes();
		if (isset($hashes[$key]))
		{
			return $hashes[$key];
		}
		else
		{
			return null;
		}
	}

	function get_hashes()
	{
		if ($this->hashes !== null)
		{
			return $this->hashes;
		}
		else
		{
			return null;
		}
	}

	function get_height()
	{
		if ($this->height !== null)
		{
			return $this->height;
		}
		else
		{
			return null;
		}
	}

	function get_language()
	{
		if ($this->lang !== null)
		{
			return $this->lang;
		}
		else
		{
			return null;
		}
	}

	function get_keyword($key = 0)
	{
		$keywords = $this->get_keywords();
		if (isset($keywords[$key]))
		{
			return $keywords[$key];
		}
		else
		{
			return null;
		}
	}

	function get_keywords()
	{
		if ($this->keywords !== null)
		{
			return $this->keywords;
		}
		else
		{
			return null;
		}
	}

	function get_length()
	{
		if ($this->length !== null)
		{
			return $this->length;
		}
		else
		{
			return null;
		}
	}

	function get_link()
	{
		if ($this->link !== null)
		{
			return urldecode($this->link);
		}
		else
		{
			return null;
		}
	}

	function get_medium()
	{
		if ($this->medium !== null)
		{
			return $this->medium;
		}
		else
		{
			return null;
		}
	}

	function get_player()
	{
		if ($this->player !== null)
		{
			return $this->player;
		}
		else
		{
			return null;
		}
	}

	function get_rating($key = 0)
	{
		$ratings = $this->get_ratings();
		if (isset($ratings[$key]))
		{
			return $ratings[$key];
		}
		else
		{
			return null;
		}
	}

	function get_ratings()
	{
		if ($this->ratings !== null)
		{
			return $this->ratings;
		}
		else
		{
			return null;
		}
	}

	function get_restriction($key = 0)
	{
		$restrictions = $this->get_restrictions();
		if (isset($restrictions[$key]))
		{
			return $restrictions[$key];
		}
		else
		{
			return null;
		}
	}

	function get_restrictions()
	{
		if ($this->restrictions !== null)
		{
			return $this->restrictions;
		}
		else
		{
			return null;
		}
	}

	function get_sampling_rate()
	{
		if ($this->samplingrate !== null)
		{
			return $this->samplingrate;
		}
		else
		{
			return null;
		}
	}

	function get_size()
	{
		$length = $this->get_length();
		if ($length !== null)
		{
			return round($length/1048576, 2);
		}
		else
		{
			return null;
		}
	}

	function get_thumbnail($key = 0)
	{
		$thumbnails = $this->get_thumbnails();
		if (isset($thumbnails[$key]))
		{
			return $thumbnails[$key];
		}
		else
		{
			return null;
		}
	}

	function get_thumbnails()
	{
		if ($this->thumbnails !== null)
		{
			return $this->thumbnails;
		}
		else
		{
			return null;
		}
	}

	function get_title()
	{
		if ($this->title !== null)
		{
			return $this->title;
		}
		else
		{
			return null;
		}
	}

	function get_type()
	{
		if ($this->type !== null)
		{
			return $this->type;
		}
		else
		{
			return null;
		}
	}

	function get_width()
	{
		if ($this->width !== null)
		{
			return $this->width;
		}
		else
		{
			return null;
		}
	}

	function native_embed($options='')
	{
		return $this->embed($options, true);
	}

	/**
	 * @todo If the dimensions for media:content are defined, use them when width/height are set to 'auto'.
	 */
	function embed($options = '', $native = false)
	{
		// Set up defaults
		$audio = '';
		$video = '';
		$alt = '';
		$altclass = '';
		$loop = 'false';
		$width = 'auto';
		$height = 'auto';
		$bgcolor = '#ffffff';
		$mediaplayer = '';
		$widescreen = false;
		$handler = $this->get_handler();
		$type = $this->get_real_type();

		// Process options and reassign values as necessary
		if (is_array($options))
		{
			extract($options);
		}
		else
		{
			$options = explode(',', $options);
			foreach($options as $option)
			{
				$opt = explode(':', $option, 2);
				if (isset($opt[0], $opt[1]))
				{
					$opt[0] = trim($opt[0]);
					$opt[1] = trim($opt[1]);
					switch ($opt[0])
					{
						case 'audio':
							$audio = $opt[1];
							break;

						case 'video':
							$video = $opt[1];
							break;

						case 'alt':
							$alt = $opt[1];
							break;

						case 'altclass':
							$altclass = $opt[1];
							break;

						case 'loop':
							$loop = $opt[1];
							break;

						case 'width':
							$width = $opt[1];
							break;

						case 'height':
							$height = $opt[1];
							break;

						case 'bgcolor':
							$bgcolor = $opt[1];
							break;

						case 'mediaplayer':
							$mediaplayer = $opt[1];
							break;

						case 'widescreen':
							$widescreen = $opt[1];
							break;
					}
				}
			}
		}

		$mime = explode('/', $type, 2);
		$mime = $mime[0];

		// Process values for 'auto'
		if ($width === 'auto')
		{
			if ($mime === 'video')
			{
				if ($height === 'auto')
				{
					$width = 480;
				}
				elseif ($widescreen)
				{
					$width = round((intval($height)/9)*16);
				}
				else
				{
					$width = round((intval($height)/3)*4);
				}
			}
			else
			{
				$width = '100%';
			}
		}

		if ($height === 'auto')
		{
			if ($mime === 'audio')
			{
				$height = 0;
			}
			elseif ($mime === 'video')
			{
				if ($width === 'auto')
				{
					if ($widescreen)
					{
						$height = 270;
					}
					else
					{
						$height = 360;
					}
				}
				elseif ($widescreen)
				{
					$height = round((intval($width)/16)*9);
				}
				else
				{
					$height = round((intval($width)/4)*3);
				}
			}
			else
			{
				$height = 376;
			}
		}
		elseif ($mime === 'audio')
		{
			$height = 0;
		}

		// Set proper placeholder value
		if ($mime === 'audio')
		{
			$placeholder = $audio;
		}
		elseif ($mime === 'video')
		{
			$placeholder = $video;
		}

		$embed = '';

		// Make sure the JS library is included
		if (!$native)
		{
			static $javascript_outputted = null;
			if (!$javascript_outputted && $this->javascript)
			{
				$embed .= '<script type="text/javascript" src="?' . htmlspecialchars($this->javascript) . '"></script>';
				$javascript_outputted = true;
			}
		}

		// Odeo Feed MP3's
		if ($handler === 'odeo')
		{
			if ($native)
			{
				$embed .= '<embed src="http://odeo.com/flash/audio_player_fullsize.swf" pluginspage="http://adobe.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="440" height="80" wmode="transparent" allowScriptAccess="any" flashvars="valid_sample_rate=true&external_url=' . $this->get_link() . '"></embed>';
			}
			else
			{
				$embed .= '<script type="text/javascript">embed_odeo("' . $this->get_link() . '");</script>';
			}
		}

		// Flash
		elseif ($handler === 'flash')
		{
			if ($native)
			{
				$embed .= "<embed src=\"" . $this->get_link() . "\" pluginspage=\"http://adobe.com/go/getflashplayer\" type=\"$type\" quality=\"high\" width=\"$width\" height=\"$height\" bgcolor=\"$bgcolor\" loop=\"$loop\"></embed>";
			}
			else
			{
				$embed .= "<script type='text/javascript'>embed_flash('$bgcolor', '$width', '$height', '" . $this->get_link() . "', '$loop', '$type');</script>";
			}
		}

		// Flash Media Player file types.
		// Preferred handler for MP3 file types.
		elseif ($handler === 'fmedia' || ($handler === 'mp3' && $mediaplayer !== ''))
		{
			$height += 20;
			if ($native)
			{
				$embed .= "<embed src=\"$mediaplayer\" pluginspage=\"http://adobe.com/go/getflashplayer\" type=\"application/x-shockwave-flash\" quality=\"high\" width=\"$width\" height=\"$height\" wmode=\"transparent\" flashvars=\"file=" . rawurlencode($this->get_link().'?file_extension=.'.$this->get_extension()) . "&autostart=false&repeat=$loop&showdigits=true&showfsbutton=false\"></embed>";
			}
			else
			{
				$embed .= "<script type='text/javascript'>embed_flv('$width', '$height', '" . rawurlencode($this->get_link().'?file_extension=.'.$this->get_extension()) . "', '$placeholder', '$loop', '$mediaplayer');</script>";
			}
		}

		// QuickTime 7 file types.  Need to test with QuickTime 6.
		// Only handle MP3's if the Flash Media Player is not present.
		elseif ($handler === 'quicktime' || ($handler === 'mp3' && $mediaplayer === ''))
		{
			$height += 16;
			if ($native)
			{
				if ($placeholder !== '')
				{
					$embed .= "<embed type=\"$type\" style=\"cursor:hand; cursor:pointer;\" href=\"" . $this->get_link() . "\" src=\"$placeholder\" width=\"$width\" height=\"$height\" autoplay=\"false\" target=\"myself\" controller=\"false\" loop=\"$loop\" scale=\"aspect\" bgcolor=\"$bgcolor\" pluginspage=\"http://apple.com/quicktime/download/\"></embed>";
				}
				else
				{
					$embed .= "<embed type=\"$type\" style=\"cursor:hand; cursor:pointer;\" src=\"" . $this->get_link() . "\" width=\"$width\" height=\"$height\" autoplay=\"false\" target=\"myself\" controller=\"true\" loop=\"$loop\" scale=\"aspect\" bgcolor=\"$bgcolor\" pluginspage=\"http://apple.com/quicktime/download/\"></embed>";
				}
			}
			else
			{
				$embed .= "<script type='text/javascript'>embed_quicktime('$type', '$bgcolor', '$width', '$height', '" . $this->get_link() . "', '$placeholder', '$loop');</script>";
			}
		}

		// Windows Media
		elseif ($handler === 'wmedia')
		{
			$height += 45;
			if ($native)
			{
				$embed .= "<embed type=\"application/x-mplayer2\" src=\"" . $this->get_link() . "\" autosize=\"1\" width=\"$width\" height=\"$height\" showcontrols=\"1\" showstatusbar=\"0\" showdisplay=\"0\" autostart=\"0\"></embed>";
			}
			else
			{
				$embed .= "<script type='text/javascript'>embed_wmedia('$width', '$height', '" . $this->get_link() . "');</script>";
			}
		}

		// Everything else
		else $embed .= '<a href="' . $this->get_link() . '" class="' . $altclass . '">' . $alt . '</a>';

		return $embed;
	}

	function get_real_type($find_handler = false)
	{
		// If it's Odeo, let's get it out of the way.
		if (substr(strtolower($this->get_link()), 0, 15) === 'http://odeo.com')
		{
			return 'odeo';
		}

		// Mime-types by handler.
		$types_flash = array('application/x-shockwave-flash', 'application/futuresplash'); // Flash
		$types_fmedia = array('video/flv', 'video/x-flv','flv-application/octet-stream'); // Flash Media Player
		$types_quicktime = array('audio/3gpp', 'audio/3gpp2', 'audio/aac', 'audio/x-aac', 'audio/aiff', 'audio/x-aiff', 'audio/mid', 'audio/midi', 'audio/x-midi', 'audio/mp4', 'audio/m4a', 'audio/x-m4a', 'audio/wav', 'audio/x-wav', 'video/3gpp', 'video/3gpp2', 'video/m4v', 'video/x-m4v', 'video/mp4', 'video/mpeg', 'video/x-mpeg', 'video/quicktime', 'video/sd-video'); // QuickTime
		$types_wmedia = array('application/asx', 'application/x-mplayer2', 'audio/x-ms-wma', 'audio/x-ms-wax', 'video/x-ms-asf-plugin', 'video/x-ms-asf', 'video/x-ms-wm', 'video/x-ms-wmv', 'video/x-ms-wvx'); // Windows Media
		$types_mp3 = array('audio/mp3', 'audio/x-mp3', 'audio/mpeg', 'audio/x-mpeg'); // MP3

		if ($this->get_type() !== null)
		{
			$type = strtolower($this->type);
		}
		else
		{
			$type = null;
		}

		// If we encounter an unsupported mime-type, check the file extension and guess intelligently.
		if (!in_array($type, array_merge($types_flash, $types_fmedia, $types_quicktime, $types_wmedia, $types_mp3)))
		{
			switch (strtolower($this->get_extension()))
			{
				// Audio mime-types
				case 'aac':
				case 'adts':
					$type = 'audio/acc';
					break;

				case 'aif':
				case 'aifc':
				case 'aiff':
				case 'cdda':
					$type = 'audio/aiff';
					break;

				case 'bwf':
					$type = 'audio/wav';
					break;

				case 'kar':
				case 'mid':
				case 'midi':
				case 'smf':
					$type = 'audio/midi';
					break;

				case 'm4a':
					$type = 'audio/x-m4a';
					break;

				case 'mp3':
				case 'swa':
					$type = 'audio/mp3';
					break;

				case 'wav':
					$type = 'audio/wav';
					break;

				case 'wax':
					$type = 'audio/x-ms-wax';
					break;

				case 'wma':
					$type = 'audio/x-ms-wma';
					break;

				// Video mime-types
				case '3gp':
				case '3gpp':
					$type = 'video/3gpp';
					break;

				case '3g2':
				case '3gp2':
					$type = 'video/3gpp2';
					break;

				case 'asf':
					$type = 'video/x-ms-asf';
					break;

				case 'flv':
					$type = 'video/x-flv';
					break;

				case 'm1a':
				case 'm1s':
				case 'm1v':
				case 'm15':
				case 'm75':
				case 'mp2':
				case 'mpa':
				case 'mpeg':
				case 'mpg':
				case 'mpm':
				case 'mpv':
					$type = 'video/mpeg';
					break;

				case 'm4v':
					$type = 'video/x-m4v';
					break;

				case 'mov':
				case 'qt':
					$type = 'video/quicktime';
					break;

				case 'mp4':
				case 'mpg4':
					$type = 'video/mp4';
					break;

				case 'sdv':
					$type = 'video/sd-video';
					break;

				case 'wm':
					$type = 'video/x-ms-wm';
					break;

				case 'wmv':
					$type = 'video/x-ms-wmv';
					break;

				case 'wvx':
					$type = 'video/x-ms-wvx';
					break;

				// Flash mime-types
				case 'spl':
					$type = 'application/futuresplash';
					break;

				case 'swf':
					$type = 'application/x-shockwave-flash';
					break;
			}
		}

		if ($find_handler)
		{
			if (in_array($type, $types_flash))
			{
				return 'flash';
			}
			elseif (in_array($type, $types_fmedia))
			{
				return 'fmedia';
			}
			elseif (in_array($type, $types_quicktime))
			{
				return 'quicktime';
			}
			elseif (in_array($type, $types_wmedia))
			{
				return 'wmedia';
			}
			elseif (in_array($type, $types_mp3))
			{
				return 'mp3';
			}
			else
			{
				return null;
			}
		}
		else
		{
			return $type;
		}
	}
}

class SimplePie_Caption
{
	var $type;
	var $lang;
	var $startTime;
	var $endTime;
	var $text;

	// Constructor, used to input the data
	function SimplePie_Caption($type = null, $lang = null, $startTime = null, $endTime = null, $text = null)
	{
		$this->type = $type;
		$this->lang = $lang;
		$this->startTime = $startTime;
		$this->endTime = $endTime;
		$this->text = $text;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_endtime()
	{
		if ($this->endTime !== null)
		{
			return $this->endTime;
		}
		else
		{
			return null;
		}
	}

	function get_language()
	{
		if ($this->lang !== null)
		{
			return $this->lang;
		}
		else
		{
			return null;
		}
	}

	function get_starttime()
	{
		if ($this->startTime !== null)
		{
			return $this->startTime;
		}
		else
		{
			return null;
		}
	}

	function get_text()
	{
		if ($this->text !== null)
		{
			return $this->text;
		}
		else
		{
			return null;
		}
	}

	function get_type()
	{
		if ($this->type !== null)
		{
			return $this->type;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Credit
{
	var $role;
	var $scheme;
	var $name;

	// Constructor, used to input the data
	function SimplePie_Credit($role = null, $scheme = null, $name = null)
	{
		$this->role = $role;
		$this->scheme = $scheme;
		$this->name = $name;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_role()
	{
		if ($this->role !== null)
		{
			return $this->role;
		}
		else
		{
			return null;
		}
	}

	function get_scheme()
	{
		if ($this->scheme !== null)
		{
			return $this->scheme;
		}
		else
		{
			return null;
		}
	}

	function get_name()
	{
		if ($this->name !== null)
		{
			return $this->name;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Copyright
{
	var $url;
	var $label;

	// Constructor, used to input the data
	function SimplePie_Copyright($url = null, $label = null)
	{
		$this->url = $url;
		$this->label = $label;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_url()
	{
		if ($this->url !== null)
		{
			return $this->url;
		}
		else
		{
			return null;
		}
	}

	function get_attribution()
	{
		if ($this->label !== null)
		{
			return $this->label;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Rating
{
	var $scheme;
	var $value;

	// Constructor, used to input the data
	function SimplePie_Rating($scheme = null, $value = null)
	{
		$this->scheme = $scheme;
		$this->value = $value;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_scheme()
	{
		if ($this->scheme !== null)
		{
			return $this->scheme;
		}
		else
		{
			return null;
		}
	}

	function get_value()
	{
		if ($this->value !== null)
		{
			return $this->value;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Restriction
{
	var $relationship;
	var $type;
	var $value;

	// Constructor, used to input the data
	function SimplePie_Restriction($relationship = null, $type = null, $value = null)
	{
		$this->relationship = $relationship;
		$this->type = $type;
		$this->value = $value;
	}

	function __toString()
	{
		// There is no $this->data here
		return md5(serialize($this));
	}

	function get_relationship()
	{
		if ($this->relationship !== null)
		{
			return $this->relationship;
		}
		else
		{
			return null;
		}
	}

	function get_type()
	{
		if ($this->type !== null)
		{
			return $this->type;
		}
		else
		{
			return null;
		}
	}

	function get_value()
	{
		if ($this->value !== null)
		{
			return $this->value;
		}
		else
		{
			return null;
		}
	}
}

/**
 * @todo Move to properly supporting RFC2616 (HTTP/1.1)
 */
class SimplePie_File
{
	var $url;
	var $useragent;
	var $success = true;
	var $headers = array();
	var $body;
	var $status_code;
	var $redirects = 0;
	var $error;
	var $method = SIMPLEPIE_FILE_SOURCE_NONE;

	function SimplePie_File($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false)
	{
		if (class_exists('idna_convert'))
		{
			$idn =& new idna_convert;
			$parsed = SimplePie_Misc::parse_url($url);
			$url = SimplePie_Misc::compress_parse_url($parsed['scheme'], $idn->encode($parsed['authority']), $parsed['path'], $parsed['query'], $parsed['fragment']);
		}
		$this->url = $url;
		$this->useragent = $useragent;
		if (preg_match('/^http(s)?:\/\//i', $url))
		{
			if ($useragent === null)
			{
				$useragent = ini_get('user_agent');
				$this->useragent = $useragent;
			}
			if (!is_array($headers))
			{
				$headers = array();
			}
			if (!$force_fsockopen && function_exists('curl_exec'))
			{
				$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_CURL;
				$fp = curl_init();
				$headers2 = array();
				foreach ($headers as $key => $value)
				{
					$headers2[] = "$key: $value";
				}
				if (version_compare(SimplePie_Misc::get_curl_version(), '7.10.5', '>='))
				{
					curl_setopt($fp, CURLOPT_ENCODING, '');
				}
				curl_setopt($fp, CURLOPT_URL, $url);
				curl_setopt($fp, CURLOPT_HEADER, 1);
				curl_setopt($fp, CURLOPT_RETURNTRANSFER, 1);
				curl_setopt($fp, CURLOPT_TIMEOUT, $timeout);
				curl_setopt($fp, CURLOPT_CONNECTTIMEOUT, $timeout);
				curl_setopt($fp, CURLOPT_REFERER, $url);
				curl_setopt($fp, CURLOPT_USERAGENT, $useragent);
				curl_setopt($fp, CURLOPT_HTTPHEADER, $headers2);
				if (!ini_get('open_basedir') && !ini_get('safe_mode') && version_compare(SimplePie_Misc::get_curl_version(), '7.15.2', '>='))
				{
					curl_setopt($fp, CURLOPT_FOLLOWLOCATION, 1);
					curl_setopt($fp, CURLOPT_MAXREDIRS, $redirects);
				}

				$this->headers = curl_exec($fp);
				if (curl_errno($fp) === 23 || curl_errno($fp) === 61)
				{
					curl_setopt($fp, CURLOPT_ENCODING, 'none');
					$this->headers = curl_exec($fp);
				}
				if (curl_errno($fp))
				{
					$this->error = 'cURL error ' . curl_errno($fp) . ': ' . curl_error($fp);
					$this->success = false;
				}
				else
				{
					$info = curl_getinfo($fp);
					curl_close($fp);
					$this->headers = explode("\r\n\r\n", $this->headers, $info['redirect_count'] + 1);
					$this->headers = array_pop($this->headers);
					$parser =& new SimplePie_HTTP_Parser($this->headers);
					if ($parser->parse())
					{
						$this->headers = $parser->headers;
						$this->body = $parser->body;
						$this->status_code = $parser->status_code;
						if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
						{
							$this->redirects++;
							$location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
							return $this->SimplePie_File($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
						}
					}
				}
			}
			else
			{
				$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE | SIMPLEPIE_FILE_SOURCE_FSOCKOPEN;
				$url_parts = parse_url($url);
				if (isset($url_parts['scheme']) && strtolower($url_parts['scheme']) === 'https')
				{
					$url_parts['host'] = "ssl://$url_parts[host]";
					$url_parts['port'] = 443;
				}
				if (!isset($url_parts['port']))
				{
					$url_parts['port'] = 80;
				}
				$fp = @fsockopen($url_parts['host'], $url_parts['port'], $errno, $errstr, $timeout);
				if (!$fp)
				{
					$this->error = 'fsockopen error: ' . $errstr;
					$this->success = false;
				}
				else
				{
					stream_set_timeout($fp, $timeout);
					if (isset($url_parts['path']))
					{
						if (isset($url_parts['query']))
						{
							$get = "$url_parts[path]?$url_parts[query]";
						}
						else
						{
							$get = $url_parts['path'];
						}
					}
					else
					{
						$get = '/';
					}
					$out = "GET $get HTTP/1.0\r\n";
					$out .= "Host: $url_parts[host]\r\n";
					$out .= "User-Agent: $useragent\r\n";
					if (extension_loaded('zlib'))
					{
						$out .= "Accept-Encoding: x-gzip,gzip,deflate\r\n";
					}

					if (isset($url_parts['user']) && isset($url_parts['pass']))
					{
						$out .= "Authorization: Basic " . base64_encode("$url_parts[user]:$url_parts[pass]") . "\r\n";
					}
					foreach ($headers as $key => $value)
					{
						$out .= "$key: $value\r\n";
					}
					$out .= "Connection: Close\r\n\r\n";
					fwrite($fp, $out);

					$info = stream_get_meta_data($fp);

					$this->headers = '';
					while (!$info['eof'] && !$info['timed_out'])
					{
						$this->headers .= fread($fp, 1160);
						$info = stream_get_meta_data($fp);
					}
					if (!$info['timed_out'])
					{
						$parser =& new SimplePie_HTTP_Parser($this->headers);
						if ($parser->parse())
						{
							$this->headers = $parser->headers;
							$this->body = $parser->body;
							$this->status_code = $parser->status_code;
							if ((in_array($this->status_code, array(300, 301, 302, 303, 307)) || $this->status_code > 307 && $this->status_code < 400) && isset($this->headers['location']) && $this->redirects < $redirects)
							{
								$this->redirects++;
								$location = SimplePie_Misc::absolutize_url($this->headers['location'], $url);
								return $this->SimplePie_File($location, $timeout, $redirects, $headers, $useragent, $force_fsockopen);
							}
							if (isset($this->headers['content-encoding']))
							{
								// Hey, we act dumb elsewhere, so let's do that here too
								switch (strtolower(trim($this->headers['content-encoding'], "\x09\x0A\x0D\x20")))
								{
									case 'gzip':
									case 'x-gzip':
										$decoder =& new SimplePie_gzdecode($this->body);
										if (!$decoder->parse())
										{
											$this->error = 'Unable to decode HTTP "gzip" stream';
											$this->success = false;
										}
										else
										{
											$this->body = $decoder->data;
										}
										break;

									case 'deflate':
										if (($body = gzuncompress($this->body)) === false)
										{
											if (($body = gzinflate($this->body)) === false)
											{
												$this->error = 'Unable to decode HTTP "deflate" stream';
												$this->success = false;
											}
										}
										$this->body = $body;
										break;

									default:
										$this->error = 'Unknown content coding';
										$this->success = false;
								}
							}
						}
					}
					else
					{
						$this->error = 'fsocket timed out';
						$this->success = false;
					}
					fclose($fp);
				}
			}
		}
		else
		{
			$this->method = SIMPLEPIE_FILE_SOURCE_LOCAL | SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS;
			if (!$this->body = file_get_contents($url))
			{
				$this->error = 'file_get_contents could not read the file';
				$this->success = false;
			}
		}
	}
}

/**
 * HTTP Response Parser
 *
 * @package SimplePie
 */
class SimplePie_HTTP_Parser
{
	/**
	 * HTTP Version
	 *
	 * @access public
	 * @var float
	 */
	var $http_version = 0.0;

	/**
	 * Status code
	 *
	 * @access public
	 * @var int
	 */
	var $status_code = 0;

	/**
	 * Reason phrase
	 *
	 * @access public
	 * @var string
	 */
	var $reason = '';

	/**
	 * Key/value pairs of the headers
	 *
	 * @access public
	 * @var array
	 */
	var $headers = array();

	/**
	 * Body of the response
	 *
	 * @access public
	 * @var string
	 */
	var $body = '';

	/**
	 * Current state of the state machine
	 *
	 * @access private
	 * @var string
	 */
	var $state = 'http_version';

	/**
	 * Input data
	 *
	 * @access private
	 * @var string
	 */
	var $data = '';

	/**
	 * Input data length (to avoid calling strlen() everytime this is needed)
	 *
	 * @access private
	 * @var int
	 */
	var $data_length = 0;

	/**
	 * Current position of the pointer
	 *
	 * @var int
	 * @access private
	 */
	var $position = 0;

	/**
	 * Name of the hedaer currently being parsed
	 *
	 * @access private
	 * @var string
	 */
	var $name = '';

	/**
	 * Value of the hedaer currently being parsed
	 *
	 * @access private
	 * @var string
	 */
	var $value = '';

	/**
	 * Create an instance of the class with the input data
	 *
	 * @access public
	 * @param string $data Input data
	 */
	function SimplePie_HTTP_Parser($data)
	{
		$this->data = $data;
		$this->data_length = strlen($this->data);
	}

	/**
	 * Parse the input data
	 *
	 * @access public
	 * @return bool true on success, false on failure
	 */
	function parse()
	{
		while ($this->state && $this->state !== 'emit' && $this->has_data())
		{
			$state = $this->state;
			$this->$state();
		}
		$this->data = '';
		if ($this->state === 'emit' || $this->state === 'body')
		{
			return true;
		}
		else
		{
			$this->http_version = '';
			$this->status_code = '';
			$this->reason = '';
			$this->headers = array();
			$this->body = '';
			return false;
		}
	}

	/**
	 * Check whether there is data beyond the pointer
	 *
	 * @access private
	 * @return bool true if there is further data, false if not
	 */
	function has_data()
	{
		return (bool) ($this->position < $this->data_length);
	}

	/**
	 * See if the next character is LWS
	 *
	 * @access private
	 * @return bool true if the next character is LWS, false if not
	 */
	function is_linear_whitespace()
	{
		return (bool) ($this->data[$this->position] === "\x09"
			|| $this->data[$this->position] === "\x20"
			|| ($this->data[$this->position] === "\x0A"
				&& isset($this->data[$this->position + 1])
				&& ($this->data[$this->position + 1] === "\x09" || $this->data[$this->position + 1] === "\x20")));
	}

	/**
	 * Parse the HTTP version
	 *
	 * @access private
	 */
	function http_version()
	{
		if (strpos($this->data, "\x0A") !== false && strtoupper(substr($this->data, 0, 5)) === 'HTTP/')
		{
			$len = strspn($this->data, '0123456789.', 5);
			$this->http_version = substr($this->data, 5, $len);
			$this->position += 5 + $len;
			if (substr_count($this->http_version, '.') <= 1)
			{
				$this->http_version = (float) $this->http_version;
				$this->position += strspn($this->data, "\x09\x20", $this->position);
				$this->state = 'status';
			}
			else
			{
				$this->state = false;
			}
		}
		else
		{
			$this->state = false;
		}
	}

	/**
	 * Parse the status code
	 *
	 * @access private
	 */
	function status()
	{
		if ($len = strspn($this->data, '0123456789', $this->position))
		{
			$this->status_code = (int) substr($this->data, $this->position, $len);
			$this->position += $len;
			$this->state = 'reason';
		}
		else
		{
			$this->state = false;
		}
	}

	/**
	 * Parse the reason phrase
	 *
	 * @access private
	 */
	function reason()
	{
		$len = strcspn($this->data, "\x0A", $this->position);
		$this->reason = trim(substr($this->data, $this->position, $len), "\x09\x0D\x20");
		$this->position += $len + 1;
		$this->state = 'new_line';
	}

	/**
	 * Deal with a new line, shifting data around as needed
	 *
	 * @access private
	 */
	function new_line()
	{
		$this->value = trim($this->value, "\x0D\x20");
		if ($this->name !== '' && $this->value !== '')
		{
			$this->name = strtolower($this->name);
			if (isset($this->headers[$this->name]))
			{
				$this->headers[$this->name] .= ', ' . $this->value;
			}
			else
			{
				$this->headers[$this->name] = $this->value;
			}
		}
		$this->name = '';
		$this->value = '';
		if (substr($this->data[$this->position], 0, 2) === "\x0D\x0A")
		{
			$this->position += 2;
			$this->state = 'body';
		}
		elseif ($this->data[$this->position] === "\x0A")
		{
			$this->position++;
			$this->state = 'body';
		}
		else
		{
			$this->state = 'name';
		}
	}

	/**
	 * Parse a header name
	 *
	 * @access private
	 */
	function name()
	{
		$len = strcspn($this->data, "\x0A:", $this->position);
		if (isset($this->data[$this->position + $len]))
		{
			if ($this->data[$this->position + $len] === "\x0A")
			{
				$this->position += $len;
				$this->state = 'new_line';
			}
			else
			{
				$this->name = substr($this->data, $this->position, $len);
				$this->position += $len + 1;
				$this->state = 'value';
			}
		}
		else
		{
			$this->state = false;
		}
	}

	/**
	 * Parse LWS, replacing consecutive LWS characters with a single space
	 *
	 * @access private
	 */
	function linear_whitespace()
	{
		do
		{
			if (substr($this->data, $this->position, 2) === "\x0D\x0A")
			{
				$this->position += 2;
			}
			elseif ($this->data[$this->position] === "\x0A")
			{
				$this->position++;
			}
			$this->position += strspn($this->data, "\x09\x20", $this->position);
		} while ($this->has_data() && $this->is_linear_whitespace());
		$this->value .= "\x20";
	}

	/**
	 * See what state to move to while within non-quoted header values
	 *
	 * @access private
	 */
	function value()
	{
		if ($this->is_linear_whitespace())
		{
			$this->linear_whitespace();
		}
		else
		{
			switch ($this->data[$this->position])
			{
				case '"':
					$this->position++;
					$this->state = 'quote';
					break;

				case "\x0A":
					$this->position++;
					$this->state = 'new_line';
					break;

				default:
					$this->state = 'value_char';
					break;
			}
		}
	}

	/**
	 * Parse a header value while outside quotes
	 *
	 * @access private
	 */
	function value_char()
	{
		$len = strcspn($this->data, "\x09\x20\x0A\"", $this->position);
		$this->value .= substr($this->data, $this->position, $len);
		$this->position += $len;
		$this->state = 'value';
	}

	/**
	 * See what state to move to while within quoted header values
	 *
	 * @access private
	 */
	function quote()
	{
		if ($this->is_linear_whitespace())
		{
			$this->linear_whitespace();
		}
		else
		{
			switch ($this->data[$this->position])
			{
				case '"':
					$this->position++;
					$this->state = 'value';
					break;

				case "\x0A":
					$this->position++;
					$this->state = 'new_line';
					break;

				case '\\':
					$this->position++;
					$this->state = 'quote_escaped';
					break;

				default:
					$this->state = 'quote_char';
					break;
			}
		}
	}

	/**
	 * Parse a header value while within quotes
	 *
	 * @access private
	 */
	function quote_char()
	{
		$len = strcspn($this->data, "\x09\x20\x0A\"\\", $this->position);
		$this->value .= substr($this->data, $this->position, $len);
		$this->position += $len;
		$this->state = 'value';
	}

	/**
	 * Parse an escaped character within quotes
	 *
	 * @access private
	 */
	function quote_escaped()
	{
		$this->value .= $this->data[$this->position];
		$this->position++;
		$this->state = 'quote';
	}

	/**
	 * Parse the body
	 *
	 * @access private
	 */
	function body()
	{
		$this->body = substr($this->data, $this->position);
		$this->state = 'emit';
	}
}

/**
 * gzdecode
 *
 * @package SimplePie
 */
class SimplePie_gzdecode
{
	/**
	 * Compressed data
	 *
	 * @access private
	 * @see gzdecode::$data
	 */
	var $compressed_data;

	/**
	 * Size of compressed data
	 *
	 * @access private
	 */
	var $compressed_size;

	/**
	 * Minimum size of a valid gzip string
	 *
	 * @access private
	 */
	var $min_compressed_size = 18;

	/**
	 * Current position of pointer
	 *
	 * @access private
	 */
	var $position = 0;

	/**
	 * Flags (FLG)
	 *
	 * @access private
	 */
	var $flags;

	/**
	 * Uncompressed data
	 *
	 * @access public
	 * @see gzdecode::$compressed_data
	 */
	var $data;

	/**
	 * Modified time
	 *
	 * @access public
	 */
	var $MTIME;

	/**
	 * Extra Flags
	 *
	 * @access public
	 */
	var $XFL;

	/**
	 * Operating System
	 *
	 * @access public
	 */
	var $OS;

	/**
	 * Subfield ID 1
	 *
	 * @access public
	 * @see gzdecode::$extra_field
	 * @see gzdecode::$SI2
	 */
	var $SI1;

	/**
	 * Subfield ID 2
	 *
	 * @access public
	 * @see gzdecode::$extra_field
	 * @see gzdecode::$SI1
	 */
	var $SI2;

	/**
	 * Extra field content
	 *
	 * @access public
	 * @see gzdecode::$SI1
	 * @see gzdecode::$SI2
	 */
	var $extra_field;

	/**
	 * Original filename
	 *
	 * @access public
	 */
	var $filename;

	/**
	 * Human readable comment
	 *
	 * @access public
	 */
	var $comment;

	/**
	 * Don't allow anything to be set
	 *
	 * @access public
	 */
	function __set($name, $value)
	{
		trigger_error("Cannot write property $name", E_USER_ERROR);
	}

	/**
	 * Set the compressed string and related properties
	 *
	 * @access public
	 */
	function SimplePie_gzdecode($data)
	{
		$this->compressed_data = $data;
		$this->compressed_size = strlen($data);
	}

	/**
	 * Decode the GZIP stream
	 *
	 * @access public
	 */
	function parse()
	{
		if ($this->compressed_size >= $this->min_compressed_size)
		{
			// Check ID1, ID2, and CM
			if (substr($this->compressed_data, 0, 3) !== "\x1F\x8B\x08")
			{
				return false;
			}

			// Get the FLG (FLaGs)
			$this->flags = ord($this->compressed_data[3]);

			// FLG bits above (1 << 4) are reserved
			if ($this->flags > 0x1F)
			{
				return false;
			}

			// Advance the pointer after the above
			$this->position += 4;

			// MTIME
			$mtime = substr($this->compressed_data, $this->position, 4);
			// Reverse the string if we're on a big-endian arch because l is the only signed long and is machine endianness
			if (current(unpack('S', "\x00\x01")) === 1)
			{
				$mtime = strrev($mtime);
			}
			$this->MTIME = current(unpack('l', $mtime));
			$this->position += 4;

			// Get the XFL (eXtra FLags)
			$this->XFL = ord($this->compressed_data[$this->position++]);

			// Get the OS (Operating System)
			$this->OS = ord($this->compressed_data[$this->position++]);

			// Parse the FEXTRA
			if ($this->flags & 4)
			{
				// Read subfield IDs
				$this->SI1 = $this->compressed_data[$this->position++];
				$this->SI2 = $this->compressed_data[$this->position++];

				// SI2 set to zero is reserved for future use
				if ($this->SI2 === "\x00")
				{
					return false;
				}

				// Get the length of the extra field
				$len = current(unpack('v', substr($this->compressed_data, $this->position, 2)));
				$position += 2;

				// Check the length of the string is still valid
				$this->min_compressed_size += $len + 4;
				if ($this->compressed_size >= $this->min_compressed_size)
				{
					// Set the extra field to the given data
					$this->extra_field = substr($this->compressed_data, $this->position, $len);
					$this->position += $len;
				}
				else
				{
					return false;
				}
			}

			// Parse the FNAME
			if ($this->flags & 8)
			{
				// Get the length of the filename
				$len = strcspn($this->compressed_data, "\x00", $this->position);

				// Check the length of the string is still valid
				$this->min_compressed_size += $len + 1;
				if ($this->compressed_size >= $this->min_compressed_size)
				{
					// Set the original filename to the given string
					$this->filename = substr($this->compressed_data, $this->position, $len);
					$this->position += $len + 1;
				}
				else
				{
					return false;
				}
			}

			// Parse the FCOMMENT
			if ($this->flags & 16)
			{
				// Get the length of the comment
				$len = strcspn($this->compressed_data, "\x00", $this->position);

				// Check the length of the string is still valid
				$this->min_compressed_size += $len + 1;
				if ($this->compressed_size >= $this->min_compressed_size)
				{
					// Set the original comment to the given string
					$this->comment = substr($this->compressed_data, $this->position, $len);
					$this->position += $len + 1;
				}
				else
				{
					return false;
				}
			}

			// Parse the FHCRC
			if ($this->flags & 2)
			{
				// Check the length of the string is still valid
				$this->min_compressed_size += $len + 2;
				if ($this->compressed_size >= $this->min_compressed_size)
				{
					// Read the CRC
					$crc = current(unpack('v', substr($this->compressed_data, $this->position, 2)));

					// Check the CRC matches
					if ((crc32(substr($this->compressed_data, 0, $this->position)) & 0xFFFF) === $crc)
					{
						$this->position += 2;
					}
					else
					{
						return false;
					}
				}
				else
				{
					return false;
				}
			}

			// Decompress the actual data
			if (($this->data = gzinflate(substr($this->compressed_data, $this->position, -8))) === false)
			{
				return false;
			}
			else
			{
				$this->position = $this->compressed_size - 8;
			}

			// Check CRC of data
			$crc = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
			$this->position += 4;
			/*if (extension_loaded('hash') && sprintf('%u', current(unpack('V', hash('crc32b', $this->data)))) !== sprintf('%u', $crc))
			{
				return false;
			}*/

			// Check ISIZE of data
			$isize = current(unpack('V', substr($this->compressed_data, $this->position, 4)));
			$this->position += 4;
			if (sprintf('%u', strlen($this->data) & 0xFFFFFFFF) !== sprintf('%u', $isize))
			{
				return false;
			}

			// Wow, against all odds, we've actually got a valid gzip string
			return true;
		}
		else
		{
			return false;
		}
	}
}

class SimplePie_Cache
{
	/**
	 * Don't call the constructor. Please.
	 *
	 * @access private
	 */
	function SimplePie_Cache()
	{
		trigger_error('Please call SimplePie_Cache::create() instead of the constructor', E_USER_ERROR);
	}

	/**
	 * Create a new SimplePie_Cache object
	 *
	 * @static
	 * @access public
	 */
	function create($location, $filename, $extension)
	{
		$location_iri =& new SimplePie_IRI($location);
		switch ($location_iri->get_scheme())
		{
			case 'mysql':
				if (extension_loaded('mysql'))
				{
					return new SimplePie_Cache_MySQL($location_iri, $filename, $extension);
				}
				break;

			default:
				return new SimplePie_Cache_File($location, $filename, $extension);
		}
	}
}

class SimplePie_Cache_File
{
	var $location;
	var $filename;
	var $extension;
	var $name;

	function SimplePie_Cache_File($location, $filename, $extension)
	{
		$this->location = $location;
		$this->filename = $filename;
		$this->extension = $extension;
		$this->name = "$this->location/$this->filename.$this->extension";
	}

	function save($data)
	{
		if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location))
		{
			if (is_a($data, 'SimplePie'))
			{
				$data = $data->data;
			}

			$data = serialize($data);

			if (function_exists('file_put_contents'))
			{
				return (bool) file_put_contents($this->name, $data);
			}
			else
			{
				$fp = fopen($this->name, 'wb');
				if ($fp)
				{
					fwrite($fp, $data);
					fclose($fp);
					return true;
				}
			}
		}
		return false;
	}

	function load()
	{
		if (file_exists($this->name) && is_readable($this->name))
		{
			return unserialize(file_get_contents($this->name));
		}
		return false;
	}

	function mtime()
	{
		if (file_exists($this->name))
		{
			return filemtime($this->name);
		}
		return false;
	}

	function touch()
	{
		if (file_exists($this->name))
		{
			return touch($this->name);
		}
		return false;
	}

	function unlink()
	{
		if (file_exists($this->name))
		{
			return unlink($this->name);
		}
		return false;
	}
}

class SimplePie_Cache_DB
{
	function prepare_simplepie_object_for_cache($data)
	{
		$items = $data->get_items();
		$items_by_id = array();

		if (!empty($items))
		{
			foreach ($items as $item)
			{
				$items_by_id[$item->get_id()] = $item;
			}

			if (count($items_by_id) !== count($items))
			{
				$items_by_id = array();
				foreach ($items as $item)
				{
					$items_by_id[$item->get_id(true)] = $item;
				}
			}

			if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
			}
			else
			{
				$channel = null;
			}

			if ($channel !== null)
			{
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
				}
			}
			if (isset($data->data['items']))
			{
				unset($data->data['items']);
			}
			if (isset($data->data['ordered_items']))
			{
				unset($data->data['ordered_items']);
			}
		}
		return array(serialize($data->data), $items_by_id);
	}
}

class SimplePie_Cache_MySQL extends SimplePie_Cache_DB
{
	var $mysql;
	var $options;
	var $id;

	function SimplePie_Cache_MySQL($mysql_location, $name, $extension)
	{
		$host = $mysql_location->get_host();
		if (SimplePie_Misc::stripos($host, 'unix(') === 0 && substr($host, -1) === ')')
		{
			$server = ':' . substr($host, 5, -1);
		}
		else
		{
			$server = $host;
			if ($mysql_location->get_port() !== null)
			{
				$server .= ':' . $mysql_location->get_port();
			}
		}

		if (strpos($mysql_location->get_userinfo(), ':') !== false)
		{
			list($username, $password) = explode(':', $mysql_location->get_userinfo(), 2);
		}
		else
		{
			$username = $mysql_location->get_userinfo();
			$password = null;
		}

		if ($this->mysql = mysql_connect($server, $username, $password))
		{
			$this->id = $name . $extension;
			$this->options = SimplePie_Misc::parse_str($mysql_location->get_query());
			if (!isset($this->options['prefix'][0]))
			{
				$this->options['prefix'][0] = '';
			}

			if (mysql_select_db(ltrim($mysql_location->get_path(), '/'))
				&& mysql_query('SET NAMES utf8')
				&& ($query = mysql_unbuffered_query('SHOW TABLES')))
			{
				$db = array();
				while ($row = mysql_fetch_row($query))
				{
					$db[] = $row[0];
				}

				if (!in_array($this->options['prefix'][0] . 'cache_data', $db))
				{
					if (!mysql_query('CREATE TABLE `' . $this->options['prefix'][0] . 'cache_data` (`id` TEXT CHARACTER SET utf8 NOT NULL, `items` SMALLINT NOT NULL DEFAULT 0, `data` BLOB NOT NULL, `mtime` INT UNSIGNED NOT NULL, UNIQUE (`id`(125)))'))
					{
						$this->mysql = null;
					}
				}

				if (!in_array($this->options['prefix'][0] . 'items', $db))
				{
					if (!mysql_query('CREATE TABLE `' . $this->options['prefix'][0] . 'items` (`feed_id` TEXT CHARACTER SET utf8 NOT NULL, `id` TEXT CHARACTER SET utf8 NOT NULL, `data` TEXT CHARACTER SET utf8 NOT NULL, `posted` INT UNSIGNED NOT NULL, INDEX `feed_id` (`feed_id`(125)))'))
					{
						$this->mysql = null;
					}
				}
			}
			else
			{
				$this->mysql = null;
			}
		}
	}

	function save($data)
	{
		if ($this->mysql)
		{
			$feed_id = "'" . mysql_real_escape_string($this->id) . "'";

			if (is_a($data, 'SimplePie'))
			{
				if (SIMPLEPIE_PHP5)
				{
					// This keyword needs to defy coding standards for PHP4 compatibility
					$data = clone($data);
				}

				$prepared = $this->prepare_simplepie_object_for_cache($data);

				if ($query = mysql_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = ' . $feed_id, $this->mysql))
				{
					if (mysql_num_rows($query))
					{
						$items = count($prepared[1]);
						if ($items)
						{
							$sql = 'UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `items` = ' . $items . ', `data` = \'' . mysql_real_escape_string($prepared[0]) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id;
						}
						else
						{
							$sql = 'UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `data` = \'' . mysql_real_escape_string($prepared[0]) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id;
						}

						if (!mysql_query($sql, $this->mysql))
						{
							return false;
						}
					}
					elseif (!mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(' . $feed_id . ', ' . count($prepared[1]) . ', \'' . mysql_real_escape_string($prepared[0]) . '\', ' . time() . ')', $this->mysql))
					{
						return false;
					}

					$ids = array_keys($prepared[1]);
					if (!empty($ids))
					{
						foreach ($ids as $id)
						{
							$database_ids[] = mysql_real_escape_string($id);
						}

						if ($query = mysql_unbuffered_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'items` WHERE `id` = \'' . implode('\' OR `id` = \'', $database_ids) . '\' AND `feed_id` = ' . $feed_id, $this->mysql))
						{
							$existing_ids = array();
							while ($row = mysql_fetch_row($query))
							{
								$existing_ids[] = $row[0];
							}

							$new_ids = array_diff($ids, $existing_ids);

							foreach ($new_ids as $new_id)
							{
								if (!($date = $prepared[1][$new_id]->get_date('U')))
								{
									$date = time();
								}

								if (!mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'items` (`feed_id`, `id`, `data`, `posted`) VALUES(' . $feed_id . ', \'' . mysql_real_escape_string($new_id) . '\', \'' . mysql_real_escape_string(serialize($prepared[1][$new_id]->data)) . '\', ' . $date . ')', $this->mysql))
								{
									return false;
								}
							}
							return true;
						}
					}
					else
					{
						return true;
					}
				}
			}
			elseif ($query = mysql_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = ' . $feed_id, $this->mysql))
			{
				if (mysql_num_rows($query))
				{
					if (mysql_query('UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `items` = 0, `data` = \'' . mysql_real_escape_string(serialize($data)) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id, $this->mysql))
					{
						return true;
					}
				}
				elseif (mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(\'' . mysql_real_escape_string($this->id) . '\', 0, \'' . mysql_real_escape_string(serialize($data)) . '\', ' . time() . ')', $this->mysql))
				{
					return true;
				}
			}
		}
		return false;
	}

	function load()
	{
		if ($this->mysql && ($query = mysql_query('SELECT `items`, `data` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($row = mysql_fetch_row($query)))
		{
			$data = unserialize($row[1]);

			if (isset($this->options['items'][0]))
			{
				$items = (int) $this->options['items'][0];
			}
			else
			{
				$items = (int) $row[0];
			}

			if ($items !== 0)
			{
				if (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0];
				}
				else
				{
					$feed = null;
				}

				if ($feed !== null)
				{
					$sql = 'SELECT `data` FROM `' . $this->options['prefix'][0] . 'items` WHERE `feed_id` = \'' . mysql_real_escape_string($this->id) . '\' ORDER BY `posted` DESC';
					if ($items > 0)
					{
						$sql .= ' LIMIT ' . $items;
					}

					if ($query = mysql_unbuffered_query($sql, $this->mysql))
					{
						while ($row = mysql_fetch_row($query))
						{
							$feed['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry'][] = unserialize($row[0]);
						}
					}
					else
					{
						return false;
					}
				}
			}
			return $data;
		}
		return false;
	}

	function mtime()
	{
		if ($this->mysql && ($query = mysql_query('SELECT `mtime` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($row = mysql_fetch_row($query)))
		{
			return $row[0];
		}
		else
		{
			return false;
		}
	}

	function touch()
	{
		if ($this->mysql && ($query = mysql_query('UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `mtime` = ' . time() . ' WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && mysql_affected_rows($this->mysql))
		{
			return true;
		}
		else
		{
			return false;
		}
	}

	function unlink()
	{
		if ($this->mysql && ($query = mysql_query('DELETE FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($query2 = mysql_query('DELETE FROM `' . $this->options['prefix'][0] . 'items` WHERE `feed_id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)))
		{
			return true;
		}
		else
		{
			return false;
		}
	}
}

class SimplePie_Misc
{
	function time_hms($seconds)
	{
		$time = '';

		$hours = floor($seconds / 3600);
		$remainder = $seconds % 3600;
		if ($hours > 0)
		{
			$time .= $hours.':';
		}

		$minutes = floor($remainder / 60);
		$seconds = $remainder % 60;
		if ($minutes < 10 && $hours > 0)
		{
			$minutes = '0' . $minutes;
		}
		if ($seconds < 10)
		{
			$seconds = '0' . $seconds;
		}

		$time .= $minutes.':';
		$time .= $seconds;

		return $time;
	}

	function absolutize_url($relative, $base)
	{
		$iri = SimplePie_IRI::absolutize(new SimplePie_IRI($base), $relative);
		return $iri->get_iri();
	}

	function remove_dot_segments($input)
	{
		$output = '';
		while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..')
		{
			// A: If the input buffer begins with a prefix of "../" or "./", then remove that prefix from the input buffer; otherwise,
			if (strpos($input, '../') === 0)
			{
				$input = substr($input, 3);
			}
			elseif (strpos($input, './') === 0)
			{
				$input = substr($input, 2);
			}
			// B: if the input buffer begins with a prefix of "/./" or "/.", where "." is a complete path segment, then replace that prefix with "/" in the input buffer; otherwise,
			elseif (strpos($input, '/./') === 0)
			{
				$input = substr_replace($input, '/', 0, 3);
			}
			elseif ($input === '/.')
			{
				$input = '/';
			}
			// C: if the input buffer begins with a prefix of "/../" or "/..", where ".." is a complete path segment, then replace that prefix with "/" in the input buffer and remove the last segment and its preceding "/" (if any) from the output buffer; otherwise,
			elseif (strpos($input, '/../') === 0)
			{
				$input = substr_replace($input, '/', 0, 4);
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			elseif ($input === '/..')
			{
				$input = '/';
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			// D: if the input buffer consists only of "." or "..", then remove that from the input buffer; otherwise,
			elseif ($input === '.' || $input === '..')
			{
				$input = '';
			}
			// E: move the first path segment in the input buffer to the end of the output buffer, including the initial "/" character (if any) and any subsequent characters up to, but not including, the next "/" character or the end of the input buffer
			elseif (($pos = strpos($input, '/', 1)) !== false)
			{
				$output .= substr($input, 0, $pos);
				$input = substr_replace($input, '', 0, $pos);
			}
			else
			{
				$output .= $input;
				$input = '';
			}
		}
		return $output . $input;
	}

	function get_element($realname, $string)
	{
		$return = array();
		$name = preg_quote($realname, '/');
		if (preg_match_all("/<($name)" . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . "(>(.*)<\/$name>|(\/)?>)/siU", $string, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE))
		{
			for ($i = 0, $total_matches = count($matches); $i < $total_matches; $i++)
			{
				$return[$i]['tag'] = $realname;
				$return[$i]['full'] = $matches[$i][0][0];
				$return[$i]['offset'] = $matches[$i][0][1];
				if (strlen($matches[$i][3][0]) <= 2)
				{
					$return[$i]['self_closing'] = true;
				}
				else
				{
					$return[$i]['self_closing'] = false;
					$return[$i]['content'] = $matches[$i][4][0];
				}
				$return[$i]['attribs'] = array();
				if (isset($matches[$i][2][0]) && preg_match_all('/[\x09\x0A\x0B\x0C\x0D\x20]+([^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*)(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"([^"]*)"|\'([^\']*)\'|([^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?/', ' ' . $matches[$i][2][0] . ' ', $attribs, PREG_SET_ORDER))
				{
					for ($j = 0, $total_attribs = count($attribs); $j < $total_attribs; $j++)
					{
						if (count($attribs[$j]) === 2)
						{
							$attribs[$j][2] = $attribs[$j][1];
						}
						$return[$i]['attribs'][strtolower($attribs[$j][1])]['data'] = SimplePie_Misc::entities_decode(end($attribs[$j]), 'UTF-8');
					}
				}
			}
		}
		return $return;
	}

	function element_implode($element)
	{
		$full = "<$element[tag]";
		foreach ($element['attribs'] as $key => $value)
		{
			$key = strtolower($key);
			$full .= " $key=\"" . htmlspecialchars($value['data']) . '"';
		}
		if ($element['self_closing'])
		{
			$full .= ' />';
		}
		else
		{
			$full .= ">$element[content]</$element[tag]>";
		}
		return $full;
	}

	function error($message, $level, $file, $line)
	{
		if ((ini_get('error_reporting') & $level) > 0)
		{
			switch ($level)
			{
				case E_USER_ERROR:
					$note = 'PHP Error';
					break;
				case E_USER_WARNING:
					$note = 'PHP Warning';
					break;
				case E_USER_NOTICE:
					$note = 'PHP Notice';
					break;
				default:
					$note = 'Unknown Error';
					break;
			}
			error_log("$note: $message in $file on line $line", 0);
		}
		return $message;
	}

	/**
	 * If a file has been cached, retrieve and display it.
	 *
	 * This is most useful for caching images (get_favicon(), etc.),
	 * however it works for all cached files.  This WILL NOT display ANY
	 * file/image/page/whatever, but rather only display what has already
	 * been cached by SimplePie.
	 *
	 * @access public
	 * @see SimplePie::get_favicon()
	 * @param str $identifier_url URL that is used to identify the content.
	 * This may or may not be the actual URL of the live content.
	 * @param str $cache_location Location of SimplePie's cache.  Defaults
	 * to './cache'.
	 * @param str $cache_extension The file extension that the file was
	 * cached with.  Defaults to 'spc'.
	 * @param str $cache_class Name of the cache-handling class being used
	 * in SimplePie.  Defaults to 'SimplePie_Cache', and should be left
	 * as-is unless you've overloaded the class.
	 * @param str $cache_name_function Obsolete. Exists for backwards
	 * compatibility reasons only.
	 */
	function display_cached_file($identifier_url, $cache_location = './cache', $cache_extension = 'spc', $cache_class = 'SimplePie_Cache', $cache_name_function = 'md5')
	{
		$cache = call_user_func(array($cache_class, 'create'), $cache_location, $identifier_url, $cache_extension);

		if ($file = $cache->load())
		{
			if (isset($file['headers']['content-type']))
			{
				header('Content-type:' . $file['headers']['content-type']);
			}
			else
			{
				header('Content-type: application/octet-stream');
			}
			header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 604800) . ' GMT'); // 7 days
			echo $file['body'];
			exit;
		}

		die('Cached file for ' . $identifier_url . ' cannot be found.');
	}

	function fix_protocol($url, $http = 1)
	{
		$url = SimplePie_Misc::normalize_url($url);
		$parsed = SimplePie_Misc::parse_url($url);
		if ($parsed['scheme'] !== '' && $parsed['scheme'] !== 'http' && $parsed['scheme'] !== 'https')
		{
			return SimplePie_Misc::fix_protocol(SimplePie_Misc::compress_parse_url('http', $parsed['authority'], $parsed['path'], $parsed['query'], $parsed['fragment']), $http);
		}

		if ($parsed['scheme'] === '' && $parsed['authority'] === '' && !file_exists($url))
		{
			return SimplePie_Misc::fix_protocol(SimplePie_Misc::compress_parse_url('http', $parsed['path'], '', $parsed['query'], $parsed['fragment']), $http);
		}

		if ($http === 2 && $parsed['scheme'] !== '')
		{
			return "feed:$url";
		}
		elseif ($http === 3 && strtolower($parsed['scheme']) === 'http')
		{
			return substr_replace($url, 'podcast', 0, 4);
		}
		elseif ($http === 4 && strtolower($parsed['scheme']) === 'http')
		{
			return substr_replace($url, 'itpc', 0, 4);
		}
		else
		{
			return $url;
		}
	}

	function parse_url($url)
	{
		$iri =& new SimplePie_IRI($url);
		return array(
			'scheme' => (string) $iri->get_scheme(),
			'authority' => (string) $iri->get_authority(),
			'path' => (string) $iri->get_path(),
			'query' => (string) $iri->get_query(),
			'fragment' => (string) $iri->get_fragment()
		);
	}

	function compress_parse_url($scheme = '', $authority = '', $path = '', $query = '', $fragment = '')
	{
		$iri =& new SimplePie_IRI('');
		$iri->set_scheme($scheme);
		$iri->set_authority($authority);
		$iri->set_path($path);
		$iri->set_query($query);
		$iri->set_fragment($fragment);
		return $iri->get_iri();
	}

	function normalize_url($url)
	{
		$iri =& new SimplePie_IRI($url);
		return $iri->get_iri();
	}

	function percent_encoding_normalization($match)
	{
		$integer = hexdec($match[1]);
		if ($integer >= 0x41 && $integer <= 0x5A || $integer >= 0x61 && $integer <= 0x7A || $integer >= 0x30 && $integer <= 0x39 || $integer === 0x2D || $integer === 0x2E || $integer === 0x5F || $integer === 0x7E)
		{
			return chr($integer);
		}
		else
		{
			return strtoupper($match[0]);
		}
	}

	/**
	 * Remove bad UTF-8 bytes
	 *
	 * PCRE Pattern to locate bad bytes in a UTF-8 string comes from W3C
	 * FAQ: Multilingual Forms (modified to include full ASCII range)
	 *
	 * @author Geoffrey Sneddon
	 * @see http://www.w3.org/International/questions/qa-forms-utf-8
	 * @param string $str String to remove bad UTF-8 bytes from
	 * @return string UTF-8 string
	 */
	function utf8_bad_replace($str)
	{
		if (function_exists('iconv') && ($return = @iconv('UTF-8', 'UTF-8//IGNORE', $str)))
		{
			return $return;
		}
		elseif (function_exists('mb_convert_encoding') && ($return = @mb_convert_encoding($str, 'UTF-8', 'UTF-8')))
		{
			return $return;
		}
		elseif (preg_match_all('/(?:[\x00-\x7F]|[\xC2-\xDF][\x80-\xBF]|\xE0[\xA0-\xBF][\x80-\xBF]|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}|\xED[\x80-\x9F][\x80-\xBF]|\xF0[\x90-\xBF][\x80-\xBF]{2}|[\xF1-\xF3][\x80-\xBF]{3}|\xF4[\x80-\x8F][\x80-\xBF]{2})+/', $str, $matches))
		{
			return implode("\xEF\xBF\xBD", $matches[0]);
		}
		elseif ($str !== '')
		{
			return "\xEF\xBF\xBD";
		}
		else
		{
			return '';
		}
	}

	/**
	 * Converts a Windows-1252 encoded string to a UTF-8 encoded string
	 *
	 * @static
	 * @access public
	 * @param string $string Windows-1252 encoded string
	 * @return string UTF-8 encoded string
	 */
	function windows_1252_to_utf8($string)
	{
		static $convert_table = array("\x80" => "\xE2\x82\xAC", "\x81" => "\xEF\xBF\xBD", "\x82" => "\xE2\x80\x9A", "\x83" => "\xC6\x92", "\x84" => "\xE2\x80\x9E", "\x85" => "\xE2\x80\xA6", "\x86" => "\xE2\x80\xA0", "\x87" => "\xE2\x80\xA1", "\x88" => "\xCB\x86", "\x89" => "\xE2\x80\xB0", "\x8A" => "\xC5\xA0", "\x8B" => "\xE2\x80\xB9", "\x8C" => "\xC5\x92", "\x8D" => "\xEF\xBF\xBD", "\x8E" => "\xC5\xBD", "\x8F" => "\xEF\xBF\xBD", "\x90" => "\xEF\xBF\xBD", "\x91" => "\xE2\x80\x98", "\x92" => "\xE2\x80\x99", "\x93" => "\xE2\x80\x9C", "\x94" => "\xE2\x80\x9D", "\x95" => "\xE2\x80\xA2", "\x96" => "\xE2\x80\x93", "\x97" => "\xE2\x80\x94", "\x98" => "\xCB\x9C", "\x99" => "\xE2\x84\xA2", "\x9A" => "\xC5\xA1", "\x9B" => "\xE2\x80\xBA", "\x9C" => "\xC5\x93", "\x9D" => "\xEF\xBF\xBD", "\x9E" => "\xC5\xBE", "\x9F" => "\xC5\xB8", "\xA0" => "\xC2\xA0", "\xA1" => "\xC2\xA1", "\xA2" => "\xC2\xA2", "\xA3" => "\xC2\xA3", "\xA4" => "\xC2\xA4", "\xA5" => "\xC2\xA5", "\xA6" => "\xC2\xA6", "\xA7" => "\xC2\xA7", "\xA8" => "\xC2\xA8", "\xA9" => "\xC2\xA9", "\xAA" => "\xC2\xAA", "\xAB" => "\xC2\xAB", "\xAC" => "\xC2\xAC", "\xAD" => "\xC2\xAD", "\xAE" => "\xC2\xAE", "\xAF" => "\xC2\xAF", "\xB0" => "\xC2\xB0", "\xB1" => "\xC2\xB1", "\xB2" => "\xC2\xB2", "\xB3" => "\xC2\xB3", "\xB4" => "\xC2\xB4", "\xB5" => "\xC2\xB5", "\xB6" => "\xC2\xB6", "\xB7" => "\xC2\xB7", "\xB8" => "\xC2\xB8", "\xB9" => "\xC2\xB9", "\xBA" => "\xC2\xBA", "\xBB" => "\xC2\xBB", "\xBC" => "\xC2\xBC", "\xBD" => "\xC2\xBD", "\xBE" => "\xC2\xBE", "\xBF" => "\xC2\xBF", "\xC0" => "\xC3\x80", "\xC1" => "\xC3\x81", "\xC2" => "\xC3\x82", "\xC3" => "\xC3\x83", "\xC4" => "\xC3\x84", "\xC5" => "\xC3\x85", "\xC6" => "\xC3\x86", "\xC7" => "\xC3\x87", "\xC8" => "\xC3\x88", "\xC9" => "\xC3\x89", "\xCA" => "\xC3\x8A", "\xCB" => "\xC3\x8B", "\xCC" => "\xC3\x8C", "\xCD" => "\xC3\x8D", "\xCE" => "\xC3\x8E", "\xCF" => "\xC3\x8F", "\xD0" => "\xC3\x90", "\xD1" => "\xC3\x91", "\xD2" => "\xC3\x92", "\xD3" => "\xC3\x93", "\xD4" => "\xC3\x94", "\xD5" => "\xC3\x95", "\xD6" => "\xC3\x96", "\xD7" => "\xC3\x97", "\xD8" => "\xC3\x98", "\xD9" => "\xC3\x99", "\xDA" => "\xC3\x9A", "\xDB" => "\xC3\x9B", "\xDC" => "\xC3\x9C", "\xDD" => "\xC3\x9D", "\xDE" => "\xC3\x9E", "\xDF" => "\xC3\x9F", "\xE0" => "\xC3\xA0", "\xE1" => "\xC3\xA1", "\xE2" => "\xC3\xA2", "\xE3" => "\xC3\xA3", "\xE4" => "\xC3\xA4", "\xE5" => "\xC3\xA5", "\xE6" => "\xC3\xA6", "\xE7" => "\xC3\xA7", "\xE8" => "\xC3\xA8", "\xE9" => "\xC3\xA9", "\xEA" => "\xC3\xAA", "\xEB" => "\xC3\xAB", "\xEC" => "\xC3\xAC", "\xED" => "\xC3\xAD", "\xEE" => "\xC3\xAE", "\xEF" => "\xC3\xAF", "\xF0" => "\xC3\xB0", "\xF1" => "\xC3\xB1", "\xF2" => "\xC3\xB2", "\xF3" => "\xC3\xB3", "\xF4" => "\xC3\xB4", "\xF5" => "\xC3\xB5", "\xF6" => "\xC3\xB6", "\xF7" => "\xC3\xB7", "\xF8" => "\xC3\xB8", "\xF9" => "\xC3\xB9", "\xFA" => "\xC3\xBA", "\xFB" => "\xC3\xBB", "\xFC" => "\xC3\xBC", "\xFD" => "\xC3\xBD", "\xFE" => "\xC3\xBE", "\xFF" => "\xC3\xBF");

		return strtr($string, $convert_table);
	}

	function change_encoding($data, $input, $output)
	{
		$input = SimplePie_Misc::encoding($input);
		$output = SimplePie_Misc::encoding($output);

		// We fail to fail on non US-ASCII bytes
		if ($input === 'US-ASCII')
		{
			static $non_ascii_octects = '';
			if (!$non_ascii_octects)
			{
				for ($i = 0x80; $i <= 0xFF; $i++)
				{
					$non_ascii_octects .= chr($i);
				}
			}
			$data = substr($data, 0, strcspn($data, $non_ascii_octects));
		}

		// This is first, as behaviour of this is completely predictable
		if ($input === 'windows-1252' && $output === 'UTF-8')
		{
			return SimplePie_Misc::windows_1252_to_utf8($data);
		}
		// This is second, as behaviour of this varies only with PHP version (the middle part of this expression checks the encoding is supported).
		elseif (function_exists('mb_convert_encoding') && @mb_convert_encoding("\x80", 'UTF-16BE', $input) !== "\x00\x80" && ($return = @mb_convert_encoding($data, $output, $input)))
		{
			return $return;
		}
		// This is last, as behaviour of this varies with OS userland and PHP version
		elseif (function_exists('iconv') && ($return = @iconv($input, $output, $data)))
		{
			return $return;
		}
		// If we can't do anything, just fail
		else
		{
			return false;
		}
	}

	function encoding($charset)
	{
		// Normalization from UTS #22
		switch (strtolower(preg_replace('/(?:[^a-zA-Z0-9]+|([^0-9])0+)/', '\1', $charset)))
		{
			case 'adobestandardencoding':
			case 'csadobestandardencoding':
				return 'Adobe-Standard-Encoding';

			case 'adobesymbolencoding':
			case 'cshppsmath':
				return 'Adobe-Symbol-Encoding';

			case 'ami1251':
			case 'amiga1251':
				return 'Amiga-1251';

			case 'ansix31101983':
			case 'csat5001983':
			case 'csiso99naplps':
			case 'isoir99':
			case 'naplps':
				return 'ANSI_X3.110-1983';

			case 'arabic7':
			case 'asmo449':
			case 'csiso89asmo449':
			case 'iso9036':
			case 'isoir89':
				return 'ASMO_449';

			case 'big5':
			case 'csbig5':
			case 'xxbig5':
				return 'Big5';

			case 'big5hkscs':
				return 'Big5-HKSCS';

			case 'bocu1':
			case 'csbocu1':
				return 'BOCU-1';

			case 'brf':
			case 'csbrf':
				return 'BRF';

			case 'bs4730':
			case 'csiso4unitedkingdom':
			case 'gb':
			case 'iso646gb':
			case 'isoir4':
			case 'uk':
				return 'BS_4730';

			case 'bsviewdata':
			case 'csiso47bsviewdata':
			case 'isoir47':
				return 'BS_viewdata';

			case 'cesu8':
			case 'cscesu8':
				return 'CESU-8';

			case 'ca':
			case 'csa71':
			case 'csaz243419851':
			case 'csiso121canadian1':
			case 'iso646ca':
			case 'isoir121':
				return 'CSA_Z243.4-1985-1';

			case 'csa72':
			case 'csaz243419852':
			case 'csiso122canadian2':
			case 'iso646ca2':
			case 'isoir122':
				return 'CSA_Z243.4-1985-2';

			case 'csaz24341985gr':
			case 'csiso123csaz24341985gr':
			case 'isoir123':
				return 'CSA_Z243.4-1985-gr';

			case 'csiso139csn369103':
			case 'csn369103':
			case 'isoir139':
				return 'CSN_369103';

			case 'csdecmcs':
			case 'dec':
			case 'decmcs':
				return 'DEC-MCS';

			case 'csiso21german':
			case 'de':
			case 'din66003':
			case 'iso646de':
			case 'isoir21':
				return 'DIN_66003';

			case 'csdkus':
			case 'dkus':
				return 'dk-us';

			case 'csiso646danish':
			case 'dk':
			case 'ds2089':
			case 'iso646dk':
				return 'DS_2089';

			case 'csibmebcdicatde':
			case 'ebcdicatde':
				return 'EBCDIC-AT-DE';

			case 'csebcdicatdea':
			case 'ebcdicatdea':
				return 'EBCDIC-AT-DE-A';

			case 'csebcdiccafr':
			case 'ebcdiccafr':
				return 'EBCDIC-CA-FR';

			case 'csebcdicdkno':
			case 'ebcdicdkno':
				return 'EBCDIC-DK-NO';

			case 'csebcdicdknoa':
			case 'ebcdicdknoa':
				return 'EBCDIC-DK-NO-A';

			case 'csebcdices':
			case 'ebcdices':
				return 'EBCDIC-ES';

			case 'csebcdicesa':
			case 'ebcdicesa':
				return 'EBCDIC-ES-A';

			case 'csebcdicess':
			case 'ebcdicess':
				return 'EBCDIC-ES-S';

			case 'csebcdicfise':
			case 'ebcdicfise':
				return 'EBCDIC-FI-SE';

			case 'csebcdicfisea':
			case 'ebcdicfisea':
				return 'EBCDIC-FI-SE-A';

			case 'csebcdicfr':
			case 'ebcdicfr':
				return 'EBCDIC-FR';

			case 'csebcdicit':
			case 'ebcdicit':
				return 'EBCDIC-IT';

			case 'csebcdicpt':
			case 'ebcdicpt':
				return 'EBCDIC-PT';

			case 'csebcdicuk':
			case 'ebcdicuk':
				return 'EBCDIC-UK';

			case 'csebcdicus':
			case 'ebcdicus':
				return 'EBCDIC-US';

			case 'csiso111ecmacyrillic':
			case 'ecmacyrillic':
			case 'isoir111':
			case 'koi8e':
				return 'ECMA-cyrillic';

			case 'csiso17spanish':
			case 'es':
			case 'iso646es':
			case 'isoir17':
				return 'ES';

			case 'csiso85spanish2':
			case 'es2':
			case 'iso646es2':
			case 'isoir85':
				return 'ES2';

			case 'cseucfixwidjapanese':
			case 'extendedunixcodefixedwidthforjapanese':
				return 'Extended_UNIX_Code_Fixed_Width_for_Japanese';

			case 'cseucpkdfmtjapanese':
			case 'eucjp':
			case 'extendedunixcodepackedformatforjapanese':
				return 'Extended_UNIX_Code_Packed_Format_for_Japanese';

			case 'gb18030':
				return 'GB18030';

			case 'chinese':
			case 'cp936':
			case 'csgb2312':
			case 'csiso58gb231280':
			case 'gb2312':
			case 'gb231280':
			case 'gbk':
			case 'isoir58':
			case 'ms936':
			case 'windows936':
				return 'GBK';

			case 'cn':
			case 'csiso57gb1988':
			case 'gb198880':
			case 'iso646cn':
			case 'isoir57':
				return 'GB_1988-80';

			case 'csiso153gost1976874':
			case 'gost1976874':
			case 'isoir153':
			case 'stsev35888':
				return 'GOST_19768-74';

			case 'csiso150':
			case 'csiso150greekccitt':
			case 'greekccitt':
			case 'isoir150':
				return 'greek-ccitt';

			case 'csiso88greek7':
			case 'greek7':
			case 'isoir88':
				return 'greek7';

			case 'csiso18greek7old':
			case 'greek7old':
			case 'isoir18':
				return 'greek7-old';

			case 'cshpdesktop':
			case 'hpdesktop':
				return 'HP-DeskTop';

			case 'cshplegal':
			case 'hplegal':
				return 'HP-Legal';

			case 'cshpmath8':
			case 'hpmath8':
				return 'HP-Math8';

			case 'cshppifont':
			case 'hppifont':
				return 'HP-Pi-font';

			case 'cshproman8':
			case 'hproman8':
			case 'r8':
			case 'roman8':
				return 'hp-roman8';

			case 'hzgb2312':
				return 'HZ-GB-2312';

			case 'csibmsymbols':
			case 'ibmsymbols':
				return 'IBM-Symbols';

			case 'csibmthai':
			case 'ibmthai':
				return 'IBM-Thai';

			case 'ccsid858':
			case 'cp858':
			case 'ibm858':
			case 'pcmultilingual850euro':
				return 'IBM00858';

			case 'ccsid924':
			case 'cp924':
			case 'ebcdiclatin9euro':
			case 'ibm924':
				return 'IBM00924';

			case 'ccsid1140':
			case 'cp1140':
			case 'ebcdicus37euro':
			case 'ibm1140':
				return 'IBM01140';

			case 'ccsid1141':
			case 'cp1141':
			case 'ebcdicde273euro':
			case 'ibm1141':
				return 'IBM01141';

			case 'ccsid1142':
			case 'cp1142':
			case 'ebcdicdk277euro':
			case 'ebcdicno277euro':
			case 'ibm1142':
				return 'IBM01142';

			case 'ccsid1143':
			case 'cp1143':
			case 'ebcdicfi278euro':
			case 'ebcdicse278euro':
			case 'ibm1143':
				return 'IBM01143';

			case 'ccsid1144':
			case 'cp1144':
			case 'ebcdicit280euro':
			case 'ibm1144':
				return 'IBM01144';

			case 'ccsid1145':
			case 'cp1145':
			case 'ebcdices284euro':
			case 'ibm1145':
				return 'IBM01145';

			case 'ccsid1146':
			case 'cp1146':
			case 'ebcdicgb285euro':
			case 'ibm1146':
				return 'IBM01146';

			case 'ccsid1147':
			case 'cp1147':
			case 'ebcdicfr297euro':
			case 'ibm1147':
				return 'IBM01147';

			case 'ccsid1148':
			case 'cp1148':
			case 'ebcdicinternational500euro':
			case 'ibm1148':
				return 'IBM01148';

			case 'ccsid1149':
			case 'cp1149':
			case 'ebcdicis871euro':
			case 'ibm1149':
				return 'IBM01149';

			case 'cp37':
			case 'csibm37':
			case 'ebcdiccpca':
			case 'ebcdiccpnl':
			case 'ebcdiccpus':
			case 'ebcdiccpwt':
			case 'ibm37':
				return 'IBM037';

			case 'cp38':
			case 'csibm38':
			case 'ebcdicint':
			case 'ibm38':
				return 'IBM038';

			case 'cp273':
			case 'csibm273':
			case 'ibm273':
				return 'IBM273';

			case 'cp274':
			case 'csibm274':
			case 'ebcdicbe':
			case 'ibm274':
				return 'IBM274';

			case 'cp275':
			case 'csibm275':
			case 'ebcdicbr':
			case 'ibm275':
				return 'IBM275';

			case 'csibm277':
			case 'ebcdiccpdk':
			case 'ebcdiccpno':
			case 'ibm277':
				return 'IBM277';

			case 'cp278':
			case 'csibm278':
			case 'ebcdiccpfi':
			case 'ebcdiccpse':
			case 'ibm278':
				return 'IBM278';

			case 'cp280':
			case 'csibm280':
			case 'ebcdiccpit':
			case 'ibm280':
				return 'IBM280';

			case 'cp281':
			case 'csibm281':
			case 'ebcdicjpe':
			case 'ibm281':
				return 'IBM281';

			case 'cp284':
			case 'csibm284':
			case 'ebcdiccpes':
			case 'ibm284':
				return 'IBM284';

			case 'cp285':
			case 'csibm285':
			case 'ebcdiccpgb':
			case 'ibm285':
				return 'IBM285';

			case 'cp290':
			case 'csibm290':
			case 'ebcdicjpkana':
			case 'ibm290':
				return 'IBM290';

			case 'cp297':
			case 'csibm297':
			case 'ebcdiccpfr':
			case 'ibm297':
				return 'IBM297';

			case 'cp420':
			case 'csibm420':
			case 'ebcdiccpar1':
			case 'ibm420':
				return 'IBM420';

			case 'cp423':
			case 'csibm423':
			case 'ebcdiccpgr':
			case 'ibm423':
				return 'IBM423';

			case 'cp424':
			case 'csibm424':
			case 'ebcdiccphe':
			case 'ibm424':
				return 'IBM424';

			case '437':
			case 'cp437':
			case 'cspc8codepage437':
			case 'ibm437':
				return 'IBM437';

			case 'cp500':
			case 'csibm500':
			case 'ebcdiccpbe':
			case 'ebcdiccpch':
			case 'ibm500':
				return 'IBM500';

			case 'cp775':
			case 'cspc775baltic':
			case 'ibm775':
				return 'IBM775';

			case '850':
			case 'cp850':
			case 'cspc850multilingual':
			case 'ibm850':
				return 'IBM850';

			case '851':
			case 'cp851':
			case 'csibm851':
			case 'ibm851':
				return 'IBM851';

			case '852':
			case 'cp852':
			case 'cspcp852':
			case 'ibm852':
				return 'IBM852';

			case '855':
			case 'cp855':
			case 'csibm855':
			case 'ibm855':
				return 'IBM855';

			case '857':
			case 'cp857':
			case 'csibm857':
			case 'ibm857':
				return 'IBM857';

			case '860':
			case 'cp860':
			case 'csibm860':
			case 'ibm860':
				return 'IBM860';

			case '861':
			case 'cp861':
			case 'cpis':
			case 'csibm861':
			case 'ibm861':
				return 'IBM861';

			case '862':
			case 'cp862':
			case 'cspc862latinhebrew':
			case 'ibm862':
				return 'IBM862';

			case '863':
			case 'cp863':
			case 'csibm863':
			case 'ibm863':
				return 'IBM863';

			case 'cp864':
			case 'csibm864':
			case 'ibm864':
				return 'IBM864';

			case '865':
			case 'cp865':
			case 'csibm865':
			case 'ibm865':
				return 'IBM865';

			case '866':
			case 'cp866':
			case 'csibm866':
			case 'ibm866':
				return 'IBM866';

			case 'cp868':
			case 'cpar':
			case 'csibm868':
			case 'ibm868':
				return 'IBM868';

			case '869':
			case 'cp869':
			case 'cpgr':
			case 'csibm869':
			case 'ibm869':
				return 'IBM869';

			case 'cp870':
			case 'csibm870':
			case 'ebcdiccproece':
			case 'ebcdiccpyu':
			case 'ibm870':
				return 'IBM870';

			case 'cp871':
			case 'csibm871':
			case 'ebcdiccpis':
			case 'ibm871':
				return 'IBM871';

			case 'cp880':
			case 'csibm880':
			case 'ebcdiccyrillic':
			case 'ibm880':
				return 'IBM880';

			case 'cp891':
			case 'csibm891':
			case 'ibm891':
				return 'IBM891';

			case 'cp903':
			case 'csibm903':
			case 'ibm903':
				return 'IBM903';

			case '904':
			case 'cp904':
			case 'csibbm904':
			case 'ibm904':
				return 'IBM904';

			case 'cp905':
			case 'csibm905':
			case 'ebcdiccptr':
			case 'ibm905':
				return 'IBM905';

			case 'cp918':
			case 'csibm918':
			case 'ebcdiccpar2':
			case 'ibm918':
				return 'IBM918';

			case 'cp1026':
			case 'csibm1026':
			case 'ibm1026':
				return 'IBM1026';

			case 'ibm1047':
				return 'IBM1047';

			case 'csiso143iecp271':
			case 'iecp271':
			case 'isoir143':
				return 'IEC_P27-1';

			case 'csiso49inis':
			case 'inis':
			case 'isoir49':
				return 'INIS';

			case 'csiso50inis8':
			case 'inis8':
			case 'isoir50':
				return 'INIS-8';

			case 'csiso51iniscyrillic':
			case 'iniscyrillic':
			case 'isoir51':
				return 'INIS-cyrillic';

			case 'csinvariant':
			case 'invariant':
				return 'INVARIANT';

			case 'iso2022cn':
				return 'ISO-2022-CN';

			case 'iso2022cnext':
				return 'ISO-2022-CN-EXT';

			case 'csiso2022jp':
			case 'iso2022jp':
				return 'ISO-2022-JP';

			case 'csiso2022jp2':
			case 'iso2022jp2':
				return 'ISO-2022-JP-2';

			case 'csiso2022kr':
			case 'iso2022kr':
				return 'ISO-2022-KR';

			case 'cswindows30latin1':
			case 'iso88591windows30latin1':
				return 'ISO-8859-1-Windows-3.0-Latin-1';

			case 'cswindows31latin1':
			case 'iso88591windows31latin1':
				return 'ISO-8859-1-Windows-3.1-Latin-1';

			case 'csisolatin2':
			case 'iso88592':
			case 'iso885921987':
			case 'isoir101':
			case 'l2':
			case 'latin2':
				return 'ISO-8859-2';

			case 'cswindows31latin2':
			case 'iso88592windowslatin2':
				return 'ISO-8859-2-Windows-Latin-2';

			case 'csisolatin3':
			case 'iso88593':
			case 'iso885931988':
			case 'isoir109':
			case 'l3':
			case 'latin3':
				return 'ISO-8859-3';

			case 'csisolatin4':
			case 'iso88594':
			case 'iso885941988':
			case 'isoir110':
			case 'l4':
			case 'latin4':
				return 'ISO-8859-4';

			case 'csisolatincyrillic':
			case 'cyrillic':
			case 'iso88595':
			case 'iso885951988':
			case 'isoir144':
				return 'ISO-8859-5';

			case 'arabic':
			case 'asmo708':
			case 'csisolatinarabic':
			case 'ecma114':
			case 'iso88596':
			case 'iso885961987':
			case 'isoir127':
				return 'ISO-8859-6';

			case 'csiso88596e':
			case 'iso88596e':
				return 'ISO-8859-6-E';

			case 'csiso88596i':
			case 'iso88596i':
				return 'ISO-8859-6-I';

			case 'csisolatingreek':
			case 'ecma118':
			case 'elot928':
			case 'greek':
			case 'greek8':
			case 'iso88597':
			case 'iso885971987':
			case 'isoir126':
				return 'ISO-8859-7';

			case 'csisolatinhebrew':
			case 'hebrew':
			case 'iso88598':
			case 'iso885981988':
			case 'isoir138':
				return 'ISO-8859-8';

			case 'csiso88598e':
			case 'iso88598e':
				return 'ISO-8859-8-E';

			case 'csiso88598i':
			case 'iso88598i':
				return 'ISO-8859-8-I';

			case 'cswindows31latin5':
			case 'iso88599windowslatin5':
				return 'ISO-8859-9-Windows-Latin-5';

			case 'csisolatin6':
			case 'iso885910':
			case 'iso8859101992':
			case 'isoir157':
			case 'l6':
			case 'latin6':
				return 'ISO-8859-10';

			case 'iso885913':
				return 'ISO-8859-13';

			case 'iso885914':
			case 'iso8859141998':
			case 'isoceltic':
			case 'isoir199':
			case 'l8':
			case 'latin8':
				return 'ISO-8859-14';

			case 'iso885915':
			case 'latin9':
				return 'ISO-8859-15';

			case 'iso885916':
			case 'iso8859162001':
			case 'isoir226':
			case 'l10':
			case 'latin10':
				return 'ISO-8859-16';

			case 'iso10646j1':
				return 'ISO-10646-J-1';

			case 'csunicode':
			case 'iso10646ucs2':
				return 'ISO-10646-UCS-2';

			case 'csucs4':
			case 'iso10646ucs4':
				return 'ISO-10646-UCS-4';

			case 'csunicodeascii':
			case 'iso10646ucsbasic':
				return 'ISO-10646-UCS-Basic';

			case 'csunicodelatin1':
			case 'iso10646':
			case 'iso10646unicodelatin1':
				return 'ISO-10646-Unicode-Latin1';

			case 'csiso10646utf1':
			case 'iso10646utf1':
				return 'ISO-10646-UTF-1';

			case 'csiso115481':
			case 'iso115481':
			case 'isotr115481':
				return 'ISO-11548-1';

			case 'csiso90':
			case 'isoir90':
				return 'iso-ir-90';

			case 'csunicodeibm1261':
			case 'isounicodeibm1261':
				return 'ISO-Unicode-IBM-1261';

			case 'csunicodeibm1264':
			case 'isounicodeibm1264':
				return 'ISO-Unicode-IBM-1264';

			case 'csunicodeibm1265':
			case 'isounicodeibm1265':
				return 'ISO-Unicode-IBM-1265';

			case 'csunicodeibm1268':
			case 'isounicodeibm1268':
				return 'ISO-Unicode-IBM-1268';

			case 'csunicodeibm1276':
			case 'isounicodeibm1276':
				return 'ISO-Unicode-IBM-1276';

			case 'csiso646basic1983':
			case 'iso646basic1983':
			case 'ref':
				return 'ISO_646.basic:1983';

			case 'csiso2intlrefversion':
			case 'irv':
			case 'iso646irv1983':
			case 'isoir2':
				return 'ISO_646.irv:1983';

			case 'csiso2033':
			case 'e13b':
			case 'iso20331983':
			case 'isoir98':
				return 'ISO_2033-1983';

			case 'csiso5427cyrillic':
			case 'iso5427':
			case 'isoir37':
				return 'ISO_5427';

			case 'iso5427cyrillic1981':
			case 'iso54271981':
			case 'isoir54':
				return 'ISO_5427:1981';

			case 'csiso5428greek':
			case 'iso54281980':
			case 'isoir55':
				return 'ISO_5428:1980';

			case 'csiso6937add':
			case 'iso6937225':
			case 'isoir152':
				return 'ISO_6937-2-25';

			case 'csisotextcomm':
			case 'iso69372add':
			case 'isoir142':
				return 'ISO_6937-2-add';

			case 'csiso8859supp':
			case 'iso8859supp':
			case 'isoir154':
			case 'latin125':
				return 'ISO_8859-supp';

			case 'csiso10367box':
			case 'iso10367box':
			case 'isoir155':
				return 'ISO_10367-box';

			case 'csiso15italian':
			case 'iso646it':
			case 'isoir15':
			case 'it':
				return 'IT';

			case 'csiso13jisc6220jp':
			case 'isoir13':
			case 'jisc62201969':
			case 'jisc62201969jp':
			case 'katakana':
			case 'x2017':
				return 'JIS_C6220-1969-jp';

			case 'csiso14jisc6220ro':
			case 'iso646jp':
			case 'isoir14':
			case 'jisc62201969ro':
			case 'jp':
				return 'JIS_C6220-1969-ro';

			case 'csiso42jisc62261978':
			case 'isoir42':
			case 'jisc62261978':
				return 'JIS_C6226-1978';

			case 'csiso87jisx208':
			case 'isoir87':
			case 'jisc62261983':
			case 'jisx2081983':
			case 'x208':
				return 'JIS_C6226-1983';

			case 'csiso91jisc62291984a':
			case 'isoir91':
			case 'jisc62291984a':
			case 'jpocra':
				return 'JIS_C6229-1984-a';

			case 'csiso92jisc62991984b':
			case 'iso646jpocrb':
			case 'isoir92':
			case 'jisc62291984b':
			case 'jpocrb':
				return 'JIS_C6229-1984-b';

			case 'csiso93jis62291984badd':
			case 'isoir93':
			case 'jisc62291984badd':
			case 'jpocrbadd':
				return 'JIS_C6229-1984-b-add';

			case 'csiso94jis62291984hand':
			case 'isoir94':
			case 'jisc62291984hand':
			case 'jpocrhand':
				return 'JIS_C6229-1984-hand';

			case 'csiso95jis62291984handadd':
			case 'isoir95':
			case 'jisc62291984handadd':
			case 'jpocrhandadd':
				return 'JIS_C6229-1984-hand-add';

			case 'csiso96jisc62291984kana':
			case 'isoir96':
			case 'jisc62291984kana':
				return 'JIS_C6229-1984-kana';

			case 'csjisencoding':
			case 'jisencoding':
				return 'JIS_Encoding';

			case 'cshalfwidthkatakana':
			case 'jisx201':
			case 'x201':
				return 'JIS_X0201';

			case 'csiso159jisx2121990':
			case 'isoir159':
			case 'jisx2121990':
			case 'x212':
				return 'JIS_X0212-1990';

			case 'csiso141jusib1002':
			case 'iso646yu':
			case 'isoir141':
			case 'js':
			case 'jusib1002':
			case 'yu':
				return 'JUS_I.B1.002';

			case 'csiso147macedonian':
			case 'isoir147':
			case 'jusib1003mac':
			case 'macedonian':
				return 'JUS_I.B1.003-mac';

			case 'csiso146serbian':
			case 'isoir146':
			case 'jusib1003serb':
			case 'serbian':
				return 'JUS_I.B1.003-serb';

			case 'koi7switched':
				return 'KOI7-switched';

			case 'cskoi8r':
			case 'koi8r':
				return 'KOI8-R';

			case 'koi8u':
				return 'KOI8-U';

			case 'csksc5636':
			case 'iso646kr':
			case 'ksc5636':
				return 'KSC5636';

			case 'cskz1048':
			case 'kz1048':
			case 'rk1048':
			case 'strk10482002':
				return 'KZ-1048';

			case 'csiso19latingreek':
			case 'isoir19':
			case 'latingreek':
				return 'latin-greek';

			case 'csiso27latingreek1':
			case 'isoir27':
			case 'latingreek1':
				return 'Latin-greek-1';

			case 'csiso158lap':
			case 'isoir158':
			case 'lap':
			case 'latinlap':
				return 'latin-lap';

			case 'csmacintosh':
			case 'mac':
			case 'macintosh':
				return 'macintosh';

			case 'csmicrosoftpublishing':
			case 'microsoftpublishing':
				return 'Microsoft-Publishing';

			case 'csmnem':
			case 'mnem':
				return 'MNEM';

			case 'csmnemonic':
			case 'mnemonic':
				return 'MNEMONIC';

			case 'csiso86hungarian':
			case 'hu':
			case 'iso646hu':
			case 'isoir86':
			case 'msz77953':
				return 'MSZ_7795.3';

			case 'csnatsdano':
			case 'isoir91':
			case 'natsdano':
				return 'NATS-DANO';

			case 'csnatsdanoadd':
			case 'isoir92':
			case 'natsdanoadd':
				return 'NATS-DANO-ADD';

			case 'csnatssefi':
			case 'isoir81':
			case 'natssefi':
				return 'NATS-SEFI';

			case 'csnatssefiadd':
			case 'isoir82':
			case 'natssefiadd':
				return 'NATS-SEFI-ADD';

			case 'csiso151cuba':
			case 'cuba':
			case 'iso646cu':
			case 'isoir151':
			case 'ncnc1081':
				return 'NC_NC00-10:81';

			case 'csiso69french':
			case 'fr':
			case 'iso646fr':
			case 'isoir69':
			case 'nfz62010':
				return 'NF_Z_62-010';

			case 'csiso25french':
			case 'iso646fr1':
			case 'isoir25':
			case 'nfz620101973':
				return 'NF_Z_62-010_(1973)';

			case 'csiso60danishnorwegian':
			case 'csiso60norwegian1':
			case 'iso646no':
			case 'isoir60':
			case 'no':
			case 'ns45511':
				return 'NS_4551-1';

			case 'csiso61norwegian2':
			case 'iso646no2':
			case 'isoir61':
			case 'no2':
			case 'ns45512':
				return 'NS_4551-2';

			case 'osdebcdicdf3irv':
				return 'OSD_EBCDIC_DF03_IRV';

			case 'osdebcdicdf41':
				return 'OSD_EBCDIC_DF04_1';

			case 'osdebcdicdf415':
				return 'OSD_EBCDIC_DF04_15';

			case 'cspc8danishnorwegian':
			case 'pc8danishnorwegian':
				return 'PC8-Danish-Norwegian';

			case 'cspc8turkish':
			case 'pc8turkish':
				return 'PC8-Turkish';

			case 'csiso16portuguese':
			case 'iso646pt':
			case 'isoir16':
			case 'pt':
				return 'PT';

			case 'csiso84portuguese2':
			case 'iso646pt2':
			case 'isoir84':
			case 'pt2':
				return 'PT2';

			case 'cp154':
			case 'csptcp154':
			case 'cyrillicasian':
			case 'pt154':
			case 'ptcp154':
				return 'PTCP154';

			case 'scsu':
				return 'SCSU';

			case 'csiso10swedish':
			case 'fi':
			case 'iso646fi':
			case 'iso646se':
			case 'isoir10':
			case 'se':
			case 'sen850200b':
				return 'SEN_850200_B';

			case 'csiso11swedishfornames':
			case 'iso646se2':
			case 'isoir11':
			case 'se2':
			case 'sen850200c':
				return 'SEN_850200_C';

			case 'csshiftjis':
			case 'mskanji':
			case 'shiftjis':
				return 'Shift_JIS';

			case 'csiso102t617bit':
			case 'isoir102':
			case 't617bit':
				return 'T.61-7bit';

			case 'csiso103t618bit':
			case 'isoir103':
			case 't61':
			case 't618bit':
				return 'T.61-8bit';

			case 'csiso128t101g2':
			case 'isoir128':
			case 't101g2':
				return 'T.101-G2';

			case 'cstscii':
			case 'tscii':
				return 'TSCII';

			case 'csunicode11':
			case 'unicode11':
				return 'UNICODE-1-1';

			case 'csunicode11utf7':
			case 'unicode11utf7':
				return 'UNICODE-1-1-UTF-7';

			case 'csunknown8bit':
			case 'unknown8bit':
				return 'UNKNOWN-8BIT';

			case 'ansix341968':
			case 'ansix341986':
			case 'ascii':
			case 'cp367':
			case 'csascii':
			case 'ibm367':
			case 'iso646irv1991':
			case 'iso646us':
			case 'isoir6':
			case 'us':
			case 'usascii':
				return 'US-ASCII';

			case 'csusdk':
			case 'usdk':
				return 'us-dk';

			case 'utf7':
				return 'UTF-7';

			case 'utf8':
				return 'UTF-8';

			case 'utf16':
				return 'UTF-16';

			case 'utf16be':
				return 'UTF-16BE';

			case 'utf16le':
				return 'UTF-16LE';

			case 'utf32':
				return 'UTF-32';

			case 'utf32be':
				return 'UTF-32BE';

			case 'utf32le':
				return 'UTF-32LE';

			case 'csventurainternational':
			case 'venturainternational':
				return 'Ventura-International';

			case 'csventuramath':
			case 'venturamath':
				return 'Ventura-Math';

			case 'csventuraus':
			case 'venturaus':
				return 'Ventura-US';

			case 'csiso70videotexsupp1':
			case 'isoir70':
			case 'videotexsuppl':
				return 'videotex-suppl';

			case 'csviqr':
			case 'viqr':
				return 'VIQR';

			case 'csviscii':
			case 'viscii':
				return 'VISCII';

			case 'cswindows31j':
			case 'windows31j':
				return 'Windows-31J';

			case 'iso885911':
			case 'tis620':
				return 'windows-874';

			case 'cseuckr':
			case 'csksc56011987':
			case 'euckr':
			case 'isoir149':
			case 'korean':
			case 'ksc5601':
			case 'ksc56011987':
			case 'ksc56011989':
			case 'windows949':
				return 'windows-949';

			case 'windows1250':
				return 'windows-1250';

			case 'windows1251':
				return 'windows-1251';

			case 'cp819':
			case 'csisolatin1':
			case 'ibm819':
			case 'iso88591':
			case 'iso885911987':
			case 'isoir100':
			case 'l1':
			case 'latin1':
			case 'windows1252':
				return 'windows-1252';

			case 'windows1253':
				return 'windows-1253';

			case 'csisolatin5':
			case 'iso88599':
			case 'iso885991989':
			case 'isoir148':
			case 'l5':
			case 'latin5':
			case 'windows1254':
				return 'windows-1254';

			case 'windows1255':
				return 'windows-1255';

			case 'windows1256':
				return 'windows-1256';

			case 'windows1257':
				return 'windows-1257';

			case 'windows1258':
				return 'windows-1258';

			default:
				return $charset;
		}
	}

	function get_curl_version()
	{
		if (is_array($curl = curl_version()))
		{
			$curl = $curl['version'];
		}
		elseif (substr($curl, 0, 5) === 'curl/')
		{
			$curl = substr($curl, 5, strcspn($curl, "\x09\x0A\x0B\x0C\x0D", 5));
		}
		elseif (substr($curl, 0, 8) === 'libcurl/')
		{
			$curl = substr($curl, 8, strcspn($curl, "\x09\x0A\x0B\x0C\x0D", 8));
		}
		else
		{
			$curl = 0;
		}
		return $curl;
	}

	function is_subclass_of($class1, $class2)
	{
		if (func_num_args() !== 2)
		{
			trigger_error('Wrong parameter count for SimplePie_Misc::is_subclass_of()', E_USER_WARNING);
		}
		elseif (version_compare(PHP_VERSION, '5.0.3', '>=') || is_object($class1))
		{
			return is_subclass_of($class1, $class2);
		}
		elseif (is_string($class1) && is_string($class2))
		{
			if (class_exists($class1))
			{
				if (class_exists($class2))
				{
					$class2 = strtolower($class2);
					while ($class1 = strtolower(get_parent_class($class1)))
					{
						if ($class1 === $class2)
						{
							return true;
						}
					}
				}
			}
			else
			{
				trigger_error('Unknown class passed as parameter', E_USER_WARNNG);
			}
		}
		return false;
	}

	/**
	 * Strip HTML comments
	 *
	 * @access public
	 * @param string $data Data to strip comments from
	 * @return string Comment stripped string
	 */
	function strip_comments($data)
	{
		$output = '';
		while (($start = strpos($data, '<!--')) !== false)
		{
			$output .= substr($data, 0, $start);
			if (($end = strpos($data, '-->', $start)) !== false)
			{
				$data = substr_replace($data, '', 0, $end + 3);
			}
			else
			{
				$data = '';
			}
		}
		return $output . $data;
	}

	function parse_date($dt)
	{
		$parser = SimplePie_Parse_Date::get();
		return $parser->parse($dt);
	}

	/**
	 * Decode HTML entities
	 *
	 * @static
	 * @access public
	 * @param string $data Input data
	 * @return string Output data
	 */
	function entities_decode($data)
	{
		$decoder =& new SimplePie_Decode_HTML_Entities($data);
		return $decoder->parse();
	}

	/**
	 * Remove RFC822 comments
	 *
	 * @access public
	 * @param string $data Data to strip comments from
	 * @return string Comment stripped string
	 */
	function uncomment_rfc822($string)
	{
		$string = (string) $string;
		$position = 0;
		$length = strlen($string);
		$depth = 0;

		$output = '';

		while ($position < $length && ($pos = strpos($string, '(', $position)) !== false)
		{
			$output .= substr($string, $position, $pos - $position);
			$position = $pos + 1;
			if ($string[$pos - 1] !== '\\')
			{
				$depth++;
				while ($depth && $position < $length)
				{
					$position += strcspn($string, '()', $position);
					if ($string[$position - 1] === '\\')
					{
						$position++;
						continue;
					}
					elseif (isset($string[$position]))
					{
						switch ($string[$position])
						{
							case '(':
								$depth++;
								break;

							case ')':
								$depth--;
								break;
						}
						$position++;
					}
					else
					{
						break;
					}
				}
			}
			else
			{
				$output .= '(';
			}
		}
		$output .= substr($string, $position);

		return $output;
	}

	function parse_mime($mime)
	{
		if (($pos = strpos($mime, ';')) === false)
		{
			return trim($mime);
		}
		else
		{
			return trim(substr($mime, 0, $pos));
		}
	}

	function htmlspecialchars_decode($string, $quote_style)
	{
		if (function_exists('htmlspecialchars_decode'))
		{
			return htmlspecialchars_decode($string, $quote_style);
		}
		else
		{
			return strtr($string, array_flip(get_html_translation_table(HTML_SPECIALCHARS, $quote_style)));
		}
	}

	function atom_03_construct_type($attribs)
	{
		if (isset($attribs['']['mode']) && strtolower(trim($attribs['']['mode']) === 'base64'))
		{
			$mode = SIMPLEPIE_CONSTRUCT_BASE64;
		}
		else
		{
			$mode = SIMPLEPIE_CONSTRUCT_NONE;
		}
		if (isset($attribs['']['type']))
		{
			switch (strtolower(trim($attribs['']['type'])))
			{
				case 'text':
				case 'text/plain':
					return SIMPLEPIE_CONSTRUCT_TEXT | $mode;

				case 'html':
				case 'text/html':
					return SIMPLEPIE_CONSTRUCT_HTML | $mode;

				case 'xhtml':
				case 'application/xhtml+xml':
					return SIMPLEPIE_CONSTRUCT_XHTML | $mode;

				default:
					return SIMPLEPIE_CONSTRUCT_NONE | $mode;
			}
		}
		else
		{
			return SIMPLEPIE_CONSTRUCT_TEXT | $mode;
		}
	}

	function atom_10_construct_type($attribs)
	{
		if (isset($attribs['']['type']))
		{
			switch (strtolower(trim($attribs['']['type'])))
			{
				case 'text':
					return SIMPLEPIE_CONSTRUCT_TEXT;

				case 'html':
					return SIMPLEPIE_CONSTRUCT_HTML;

				case 'xhtml':
					return SIMPLEPIE_CONSTRUCT_XHTML;

				default:
					return SIMPLEPIE_CONSTRUCT_NONE;
			}
		}
		return SIMPLEPIE_CONSTRUCT_TEXT;
	}

	function atom_10_content_construct_type($attribs)
	{
		if (isset($attribs['']['type']))
		{
			$type = strtolower(trim($attribs['']['type']));
			switch ($type)
			{
				case 'text':
					return SIMPLEPIE_CONSTRUCT_TEXT;

				case 'html':
					return SIMPLEPIE_CONSTRUCT_HTML;

				case 'xhtml':
					return SIMPLEPIE_CONSTRUCT_XHTML;
			}
			if (in_array(substr($type, -4), array('+xml', '/xml')) || substr($type, 0, 5) === 'text/')
			{
				return SIMPLEPIE_CONSTRUCT_NONE;
			}
			else
			{
				return SIMPLEPIE_CONSTRUCT_BASE64;
			}
		}
		else
		{
			return SIMPLEPIE_CONSTRUCT_TEXT;
		}
	}

	function is_isegment_nz_nc($string)
	{
		return (bool) preg_match('/^([A-Za-z0-9\-._~\x{A0}-\x{D7FF}\x{F900}-\x{FDCF}\x{FDF0}-\x{FFEF}\x{10000}-\x{1FFFD}\x{20000}-\x{2FFFD}\x{30000}-\x{3FFFD}\x{40000}-\x{4FFFD}\x{50000}-\x{5FFFD}\x{60000}-\x{6FFFD}\x{70000}-\x{7FFFD}\x{80000}-\x{8FFFD}\x{90000}-\x{9FFFD}\x{A0000}-\x{AFFFD}\x{B0000}-\x{BFFFD}\x{C0000}-\x{CFFFD}\x{D0000}-\x{DFFFD}\x{E1000}-\x{EFFFD}!$&\'()*+,;=@]|(%[0-9ABCDEF]{2}))+$/u', $string);
	}

	function space_seperated_tokens($string)
	{
		$space_characters = "\x20\x09\x0A\x0B\x0C\x0D";
		$string_length = strlen($string);

		$position = strspn($string, $space_characters);
		$tokens = array();

		while ($position < $string_length)
		{
			$len = strcspn($string, $space_characters, $position);
			$tokens[] = substr($string, $position, $len);
			$position += $len;
			$position += strspn($string, $space_characters, $position);
		}

		return $tokens;
	}

	function array_unique($array)
	{
		if (version_compare(PHP_VERSION, '5.2', '>='))
		{
			return array_unique($array);
		}
		else
		{
			$array = (array) $array;
			$new_array = array();
			$new_array_strings = array();
			foreach ($array as $key => $value)
			{
				if (is_object($value))
				{
					if (method_exists($value, '__toString'))
					{
						$cmp = $value->__toString();
					}
					else
					{
						trigger_error('Object of class ' . get_class($value) . ' could not be converted to string', E_USER_ERROR);
					}
				}
				elseif (is_array($value))
				{
					$cmp = (string) reset($value);
				}
				else
				{
					$cmp = (string) $value;
				}
				if (!in_array($cmp, $new_array_strings))
				{
					$new_array[$key] = $value;
					$new_array_strings[] = $cmp;
				}
			}
			return $new_array;
		}
	}

	/**
	 * Converts a unicode codepoint to a UTF-8 character
	 *
	 * @static
	 * @access public
	 * @param int $codepoint Unicode codepoint
	 * @return string UTF-8 character
	 */
	function codepoint_to_utf8($codepoint)
	{
		$codepoint = (int) $codepoint;
		if ($codepoint < 0)
		{
			return false;
		}
		else if ($codepoint <= 0x7f)
		{
			return chr($codepoint);
		}
		else if ($codepoint <= 0x7ff)
		{
			return chr(0xc0 | ($codepoint >> 6)) . chr(0x80 | ($codepoint & 0x3f));
		}
		else if ($codepoint <= 0xffff)
		{
			return chr(0xe0 | ($codepoint >> 12)) . chr(0x80 | (($codepoint >> 6) & 0x3f)) . chr(0x80 | ($codepoint & 0x3f));
		}
		else if ($codepoint <= 0x10ffff)
		{
			return chr(0xf0 | ($codepoint >> 18)) . chr(0x80 | (($codepoint >> 12) & 0x3f)) . chr(0x80 | (($codepoint >> 6) & 0x3f)) . chr(0x80 | ($codepoint & 0x3f));
		}
		else
		{
			// U+FFFD REPLACEMENT CHARACTER
			return "\xEF\xBF\xBD";
		}
	}

	/**
	 * Re-implementation of PHP 5's stripos()
	 *
	 * Returns the numeric position of the first occurrence of needle in the
	 * haystack string.
	 *
	 * @static
	 * @access string
	 * @param object $haystack
	 * @param string $needle Note that the needle may be a string of one or more
	 *     characters. If needle is not a string, it is converted to an integer
	 *     and applied as the ordinal value of a character.
	 * @param int $offset The optional offset parameter allows you to specify which
	 *     character in haystack to start searching. The position returned is still
	 *     relative to the beginning of haystack.
	 * @return bool If needle is not found, stripos() will return boolean false.
	 */
	function stripos($haystack, $needle, $offset = 0)
	{
		if (function_exists('stripos'))
		{
			return stripos($haystack, $needle, $offset);
		}
		else
		{
			if (is_string($needle))
			{
				$needle = strtolower($needle);
			}
			elseif (is_int($needle) || is_bool($needle) || is_double($needle))
			{
				$needle = strtolower(chr($needle));
			}
			else
			{
				trigger_error('needle is not a string or an integer', E_USER_WARNING);
				return false;
			}

			return strpos(strtolower($haystack), $needle, $offset);
		}
	}

	/**
	 * Similar to parse_str()
	 *
	 * Returns an associative array of name/value pairs, where the value is an
	 * array of values that have used the same name
	 *
	 * @static
	 * @access string
	 * @param string $str The input string.
	 * @return array
	 */
	function parse_str($str)
	{
		$return = array();
		$str = explode('&', $str);

		foreach ($str as $section)
		{
			if (strpos($section, '=') !== false)
			{
				list($name, $value) = explode('=', $section, 2);
				$return[urldecode($name)][] = urldecode($value);
			}
			else
			{
				$return[urldecode($section)][] = null;
			}
		}

		return $return;
	}

	/**
	 * Detect XML encoding, as per XML 1.0 Appendix F.1
	 *
	 * @todo Add support for EBCDIC
	 * @param string $data XML data
	 * @return array Possible encodings
	 */
	function xml_encoding($data)
	{
		// UTF-32 Big Endian BOM
		if (substr($data, 0, 4) === "\x00\x00\xFE\xFF")
		{
			$encoding[] = 'UTF-32BE';
		}
		// UTF-32 Little Endian BOM
		elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00")
		{
			$encoding[] = 'UTF-32LE';
		}
		// UTF-16 Big Endian BOM
		elseif (substr($data, 0, 2) === "\xFE\xFF")
		{
			$encoding[] = 'UTF-16BE';
		}
		// UTF-16 Little Endian BOM
		elseif (substr($data, 0, 2) === "\xFF\xFE")
		{
			$encoding[] = 'UTF-16LE';
		}
		// UTF-8 BOM
		elseif (substr($data, 0, 3) === "\xEF\xBB\xBF")
		{
			$encoding[] = 'UTF-8';
		}
		// UTF-32 Big Endian Without BOM
		elseif (substr($data, 0, 20) === "\x00\x00\x00\x3C\x00\x00\x00\x3F\x00\x00\x00\x78\x00\x00\x00\x6D\x00\x00\x00\x6C")
		{
			if ($pos = strpos($data, "\x00\x00\x00\x3F\x00\x00\x00\x3E"))
			{
				$parser =& new SimplePie_XML_Declaration_Parser(SimplePie_Misc::change_encoding(substr($data, 20, $pos - 20), 'UTF-32BE', 'UTF-8'));
				if ($parser->parse())
				{
					$encoding[] = $parser->encoding;
				}
			}
			$encoding[] = 'UTF-32BE';
		}
		// UTF-32 Little Endian Without BOM
		elseif (substr($data, 0, 20) === "\x3C\x00\x00\x00\x3F\x00\x00\x00\x78\x00\x00\x00\x6D\x00\x00\x00\x6C\x00\x00\x00")
		{
			if ($pos = strpos($data, "\x3F\x00\x00\x00\x3E\x00\x00\x00"))
			{
				$parser =& new SimplePie_XML_Declaration_Parser(SimplePie_Misc::change_encoding(substr($data, 20, $pos - 20), 'UTF-32LE', 'UTF-8'));
				if ($parser->parse())
				{
					$encoding[] = $parser->encoding;
				}
			}
			$encoding[] = 'UTF-32LE';
		}
		// UTF-16 Big Endian Without BOM
		elseif (substr($data, 0, 10) === "\x00\x3C\x00\x3F\x00\x78\x00\x6D\x00\x6C")
		{
			if ($pos = strpos($data, "\x00\x3F\x00\x3E"))
			{
				$parser =& new SimplePie_XML_Declaration_Parser(SimplePie_Misc::change_encoding(substr($data, 20, $pos - 10), 'UTF-16BE', 'UTF-8'));
				if ($parser->parse())
				{
					$encoding[] = $parser->encoding;
				}
			}
			$encoding[] = 'UTF-16BE';
		}
		// UTF-16 Little Endian Without BOM
		elseif (substr($data, 0, 10) === "\x3C\x00\x3F\x00\x78\x00\x6D\x00\x6C\x00")
		{
			if ($pos = strpos($data, "\x3F\x00\x3E\x00"))
			{
				$parser =& new SimplePie_XML_Declaration_Parser(SimplePie_Misc::change_encoding(substr($data, 20, $pos - 10), 'UTF-16LE', 'UTF-8'));
				if ($parser->parse())
				{
					$encoding[] = $parser->encoding;
				}
			}
			$encoding[] = 'UTF-16LE';
		}
		// US-ASCII (or superset)
		elseif (substr($data, 0, 5) === "\x3C\x3F\x78\x6D\x6C")
		{
			if ($pos = strpos($data, "\x3F\x3E"))
			{
				$parser =& new SimplePie_XML_Declaration_Parser(substr($data, 5, $pos - 5));
				if ($parser->parse())
				{
					$encoding[] = $parser->encoding;
				}
			}
			$encoding[] = 'UTF-8';
		}
		// Fallback to UTF-8
		else
		{
			$encoding[] = 'UTF-8';
		}
		return $encoding;
	}

	function output_javascript()
	{
		if (function_exists('ob_gzhandler'))
		{
			ob_start('ob_gzhandler');
		}
		header('Content-type: text/javascript; charset: UTF-8');
		header('Cache-Control: must-revalidate');
		header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 604800) . ' GMT'); // 7 days
		?>
function embed_odeo(link) {
	document.writeln('<embed src="http://odeo.com/flash/audio_player_fullsize.swf" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="440" height="80" wmode="transparent" allowScriptAccess="any" flashvars="valid_sample_rate=true&external_url='+link+'"></embed>');
}

function embed_quicktime(type, bgcolor, width, height, link, placeholder, loop) {
	if (placeholder != '') {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" href="'+link+'" src="'+placeholder+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="false" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
	else {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" src="'+link+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="true" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
}

function embed_flash(bgcolor, width, height, link, loop, type) {
	document.writeln('<embed src="'+link+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="'+type+'" quality="high" width="'+width+'" height="'+height+'" bgcolor="'+bgcolor+'" loop="'+loop+'"></embed>');
}

function embed_flv(width, height, link, placeholder, loop, player) {
	document.writeln('<embed src="'+player+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="'+width+'" height="'+height+'" wmode="transparent" flashvars="file='+link+'&autostart=false&repeat='+loop+'&showdigits=true&showfsbutton=false"></embed>');
}

function embed_wmedia(width, height, link) {
	document.writeln('<embed type="application/x-mplayer2" src="'+link+'" autosize="1" width="'+width+'" height="'+height+'" showcontrols="1" showstatusbar="0" showdisplay="0" autostart="0"></embed>');
}
		<?php
	}
}

/**
 * Decode HTML Entities
 *
 * This implements HTML5 as of revision 967 (2007-06-28)
 *
 * @package SimplePie
 */
class SimplePie_Decode_HTML_Entities
{
	/**
	 * Data to be parsed
	 *
	 * @access private
	 * @var string
	 */
	var $data = '';

	/**
	 * Currently consumed bytes
	 *
	 * @access private
	 * @var string
	 */
	var $consumed = '';

	/**
	 * Position of the current byte being parsed
	 *
	 * @access private
	 * @var int
	 */
	var $position = 0;

	/**
	 * Create an instance of the class with the input data
	 *
	 * @access public
	 * @param string $data Input data
	 */
	function SimplePie_Decode_HTML_Entities($data)
	{
		$this->data = $data;
	}

	/**
	 * Parse the input data
	 *
	 * @access public
	 * @return string Output data
	 */
	function parse()
	{
		while (($this->position = strpos($this->data, '&', $this->position)) !== false)
		{
			$this->consume();
			$this->entity();
			$this->consumed = '';
		}
		return $this->data;
	}

	/**
	 * Consume the next byte
	 *
	 * @access private
	 * @return mixed The next byte, or false, if there is no more data
	 */
	function consume()
	{
		if (isset($this->data[$this->position]))
		{
			$this->consumed .= $this->data[$this->position];
			return $this->data[$this->position++];
		}
		else
		{
			return false;
		}
	}

	/**
	 * Consume a range of characters
	 *
	 * @access private
	 * @param string $chars Characters to consume
	 * @return mixed A series of characters that match the range, or false
	 */
	function consume_range($chars)
	{
		if ($len = strspn($this->data, $chars, $this->position))
		{
			$data = substr($this->data, $this->position, $len);
			$this->consumed .= $data;
			$this->position += $len;
			return $data;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Unconsume one byte
	 *
	 * @access private
	 */
	function unconsume()
	{
		$this->consumed = substr($this->consumed, 0, -1);
		$this->position--;
	}

	/**
	 * Decode an entity
	 *
	 * @access private
	 */
	function entity()
	{
		switch ($this->consume())
		{
			case "\x09":
			case "\x0A":
			case "\x0B":
			case "\x0B":
			case "\x0C":
			case "\x20":
			case "\x3C":
			case "\x26":
			case false:
				break;

			case "\x23":
				switch ($this->consume())
				{
					case "\x78":
					case "\x58":
						$range = '0123456789ABCDEFabcdef';
						$hex = true;
						break;

					default:
						$range = '0123456789';
						$hex = false;
						$this->unconsume();
						break;
				}

				if ($codepoint = $this->consume_range($range))
				{
					static $windows_1252_specials = array(0x0D => "\x0A", 0x80 => "\xE2\x82\xAC", 0x81 => "\xEF\xBF\xBD", 0x82 => "\xE2\x80\x9A", 0x83 => "\xC6\x92", 0x84 => "\xE2\x80\x9E", 0x85 => "\xE2\x80\xA6", 0x86 => "\xE2\x80\xA0", 0x87 => "\xE2\x80\xA1", 0x88 => "\xCB\x86", 0x89 => "\xE2\x80\xB0", 0x8A => "\xC5\xA0", 0x8B => "\xE2\x80\xB9", 0x8C => "\xC5\x92", 0x8D => "\xEF\xBF\xBD", 0x8E => "\xC5\xBD", 0x8F => "\xEF\xBF\xBD", 0x90 => "\xEF\xBF\xBD", 0x91 => "\xE2\x80\x98", 0x92 => "\xE2\x80\x99", 0x93 => "\xE2\x80\x9C", 0x94 => "\xE2\x80\x9D", 0x95 => "\xE2\x80\xA2", 0x96 => "\xE2\x80\x93", 0x97 => "\xE2\x80\x94", 0x98 => "\xCB\x9C", 0x99 => "\xE2\x84\xA2", 0x9A => "\xC5\xA1", 0x9B => "\xE2\x80\xBA", 0x9C => "\xC5\x93", 0x9D => "\xEF\xBF\xBD", 0x9E => "\xC5\xBE", 0x9F => "\xC5\xB8");

					if ($hex)
					{
						$codepoint = hexdec($codepoint);
					}
					else
					{
						$codepoint = intval($codepoint);
					}

					if (isset($windows_1252_specials[$codepoint]))
					{
						$replacement = $windows_1252_specials[$codepoint];
					}
					else
					{
						$replacement = SimplePie_Misc::codepoint_to_utf8($codepoint);
					}

					if (!in_array($this->consume(), array(';', false), true))
					{
						$this->unconsume();
					}

					$consumed_length = strlen($this->consumed);
					$this->data = substr_replace($this->data, $replacement, $this->position - $consumed_length, $consumed_length);
					$this->position += strlen($replacement) - $consumed_length;
				}
				break;

			default:
				static $entities = array('Aacute' => "\xC3\x81", 'aacute' => "\xC3\xA1", 'Aacute;' => "\xC3\x81", 'aacute;' => "\xC3\xA1", 'Acirc' => "\xC3\x82", 'acirc' => "\xC3\xA2", 'Acirc;' => "\xC3\x82", 'acirc;' => "\xC3\xA2", 'acute' => "\xC2\xB4", 'acute;' => "\xC2\xB4", 'AElig' => "\xC3\x86", 'aelig' => "\xC3\xA6", 'AElig;' => "\xC3\x86", 'aelig;' => "\xC3\xA6", 'Agrave' => "\xC3\x80", 'agrave' => "\xC3\xA0", 'Agrave;' => "\xC3\x80", 'agrave;' => "\xC3\xA0", 'alefsym;' => "\xE2\x84\xB5", 'Alpha;' => "\xCE\x91", 'alpha;' => "\xCE\xB1", 'AMP' => "\x26", 'amp' => "\x26", 'AMP;' => "\x26", 'amp;' => "\x26", 'and;' => "\xE2\x88\xA7", 'ang;' => "\xE2\x88\xA0", 'apos;' => "\x27", 'Aring' => "\xC3\x85", 'aring' => "\xC3\xA5", 'Aring;' => "\xC3\x85", 'aring;' => "\xC3\xA5", 'asymp;' => "\xE2\x89\x88", 'Atilde' => "\xC3\x83", 'atilde' => "\xC3\xA3", 'Atilde;' => "\xC3\x83", 'atilde;' => "\xC3\xA3", 'Auml' => "\xC3\x84", 'auml' => "\xC3\xA4", 'Auml;' => "\xC3\x84", 'auml;' => "\xC3\xA4", 'bdquo;' => "\xE2\x80\x9E", 'Beta;' => "\xCE\x92", 'beta;' => "\xCE\xB2", 'brvbar' => "\xC2\xA6", 'brvbar;' => "\xC2\xA6", 'bull;' => "\xE2\x80\xA2", 'cap;' => "\xE2\x88\xA9", 'Ccedil' => "\xC3\x87", 'ccedil' => "\xC3\xA7", 'Ccedil;' => "\xC3\x87", 'ccedil;' => "\xC3\xA7", 'cedil' => "\xC2\xB8", 'cedil;' => "\xC2\xB8", 'cent' => "\xC2\xA2", 'cent;' => "\xC2\xA2", 'Chi;' => "\xCE\xA7", 'chi;' => "\xCF\x87", 'circ;' => "\xCB\x86", 'clubs;' => "\xE2\x99\xA3", 'cong;' => "\xE2\x89\x85", 'COPY' => "\xC2\xA9", 'copy' => "\xC2\xA9", 'COPY;' => "\xC2\xA9", 'copy;' => "\xC2\xA9", 'crarr;' => "\xE2\x86\xB5", 'cup;' => "\xE2\x88\xAA", 'curren' => "\xC2\xA4", 'curren;' => "\xC2\xA4", 'Dagger;' => "\xE2\x80\xA1", 'dagger;' => "\xE2\x80\xA0", 'dArr;' => "\xE2\x87\x93", 'darr;' => "\xE2\x86\x93", 'deg' => "\xC2\xB0", 'deg;' => "\xC2\xB0", 'Delta;' => "\xCE\x94", 'delta;' => "\xCE\xB4", 'diams;' => "\xE2\x99\xA6", 'divide' => "\xC3\xB7", 'divide;' => "\xC3\xB7", 'Eacute' => "\xC3\x89", 'eacute' => "\xC3\xA9", 'Eacute;' => "\xC3\x89", 'eacute;' => "\xC3\xA9", 'Ecirc' => "\xC3\x8A", 'ecirc' => "\xC3\xAA", 'Ecirc;' => "\xC3\x8A", 'ecirc;' => "\xC3\xAA", 'Egrave' => "\xC3\x88", 'egrave' => "\xC3\xA8", 'Egrave;' => "\xC3\x88", 'egrave;' => "\xC3\xA8", 'empty;' => "\xE2\x88\x85", 'emsp;' => "\xE2\x80\x83", 'ensp;' => "\xE2\x80\x82", 'Epsilon;' => "\xCE\x95", 'epsilon;' => "\xCE\xB5", 'equiv;' => "\xE2\x89\xA1", 'Eta;' => "\xCE\x97", 'eta;' => "\xCE\xB7", 'ETH' => "\xC3\x90", 'eth' => "\xC3\xB0", 'ETH;' => "\xC3\x90", 'eth;' => "\xC3\xB0", 'Euml' => "\xC3\x8B", 'euml' => "\xC3\xAB", 'Euml;' => "\xC3\x8B", 'euml;' => "\xC3\xAB", 'euro;' => "\xE2\x82\xAC", 'exist;' => "\xE2\x88\x83", 'fnof;' => "\xC6\x92", 'forall;' => "\xE2\x88\x80", 'frac12' => "\xC2\xBD", 'frac12;' => "\xC2\xBD", 'frac14' => "\xC2\xBC", 'frac14;' => "\xC2\xBC", 'frac34' => "\xC2\xBE", 'frac34;' => "\xC2\xBE", 'frasl;' => "\xE2\x81\x84", 'Gamma;' => "\xCE\x93", 'gamma;' => "\xCE\xB3", 'ge;' => "\xE2\x89\xA5", 'GT' => "\x3E", 'gt' => "\x3E", 'GT;' => "\x3E", 'gt;' => "\x3E", 'hArr;' => "\xE2\x87\x94", 'harr;' => "\xE2\x86\x94", 'hearts;' => "\xE2\x99\xA5", 'hellip;' => "\xE2\x80\xA6", 'Iacute' => "\xC3\x8D", 'iacute' => "\xC3\xAD", 'Iacute;' => "\xC3\x8D", 'iacute;' => "\xC3\xAD", 'Icirc' => "\xC3\x8E", 'icirc' => "\xC3\xAE", 'Icirc;' => "\xC3\x8E", 'icirc;' => "\xC3\xAE", 'iexcl' => "\xC2\xA1", 'iexcl;' => "\xC2\xA1", 'Igrave' => "\xC3\x8C", 'igrave' => "\xC3\xAC", 'Igrave;' => "\xC3\x8C", 'igrave;' => "\xC3\xAC", 'image;' => "\xE2\x84\x91", 'infin;' => "\xE2\x88\x9E", 'int;' => "\xE2\x88\xAB", 'Iota;' => "\xCE\x99", 'iota;' => "\xCE\xB9", 'iquest' => "\xC2\xBF", 'iquest;' => "\xC2\xBF", 'isin;' => "\xE2\x88\x88", 'Iuml' => "\xC3\x8F", 'iuml' => "\xC3\xAF", 'Iuml;' => "\xC3\x8F", 'iuml;' => "\xC3\xAF", 'Kappa;' => "\xCE\x9A", 'kappa;' => "\xCE\xBA", 'Lambda;' => "\xCE\x9B", 'lambda;' => "\xCE\xBB", 'lang;' => "\xE3\x80\x88", 'laquo' => "\xC2\xAB", 'laquo;' => "\xC2\xAB", 'lArr;' => "\xE2\x87\x90", 'larr;' => "\xE2\x86\x90", 'lceil;' => "\xE2\x8C\x88", 'ldquo;' => "\xE2\x80\x9C", 'le;' => "\xE2\x89\xA4", 'l

				for ($i = 0, $match = null; $i < 9 && $this->consume() !== false; $i++)
				{
					$consumed = substr($this->consumed, 1);
					if (isset($entities[$consumed]))
					{
						$match = $consumed;
					}
				}

				if ($match !== null)
				{
 					$this->data = substr_replace($this->data, $entities[$match], $this->position - strlen($consumed) - 1, strlen($match) + 1);
					$this->position += strlen($entities[$match]) - strlen($consumed) - 1;
				}
				break;
		}
	}
}

/**
 * IRI parser/serialiser
 *
 * @package SimplePie
 */
class SimplePie_IRI
{
	/**
	 * Scheme
	 *
	 * @access private
	 * @var string
	 */
	var $scheme;

	/**
	 * User Information
	 *
	 * @access private
	 * @var string
	 */
	var $userinfo;

	/**
	 * Host
	 *
	 * @access private
	 * @var string
	 */
	var $host;

	/**
	 * Port
	 *
	 * @access private
	 * @var string
	 */
	var $port;

	/**
	 * Path
	 *
	 * @access private
	 * @var string
	 */
	var $path;

	/**
	 * Query
	 *
	 * @access private
	 * @var string
	 */
	var $query;

	/**
	 * Fragment
	 *
	 * @access private
	 * @var string
	 */
	var $fragment;

	/**
	 * Whether the object represents a valid IRI
	 *
	 * @access private
	 * @var array
	 */
	var $valid = array();

	/**
	 * Return the entire IRI when you try and read the object as a string
	 *
	 * @access public
	 * @return string
	 */
	function __toString()
	{
		return $this->get_iri();
	}

	/**
	 * Create a new IRI object, from a specified string
	 *
	 * @access public
	 * @param string $iri
	 * @return SimplePie_IRI
	 */
	function SimplePie_IRI($iri)
	{
		$iri = (string) $iri;
		if ($iri !== '')
		{
			$parsed = $this->parse_iri($iri);
			$this->set_scheme($parsed['scheme']);
			$this->set_authority($parsed['authority']);
			$this->set_path($parsed['path']);
			$this->set_query($parsed['query']);
			$this->set_fragment($parsed['fragment']);
		}
	}

	/**
	 * Create a new IRI object by resolving a relative IRI
	 *
	 * @static
	 * @access public
	 * @param SimplePie_IRI $base Base IRI
	 * @param string $relative Relative IRI
	 * @return SimplePie_IRI
	 */
	function absolutize($base, $relative)
	{
		$relative = (string) $relative;
		if ($relative !== '')
		{
			$relative =& new SimplePie_IRI($relative);
			if ($relative->get_scheme() !== null)
			{
				$target = $relative;
			}
			elseif ($base->get_iri() !== null)
			{
				if ($relative->get_authority() !== null)
				{
					$target = $relative;
					$target->set_scheme($base->get_scheme());
				}
				else
				{
					$target =& new SimplePie_IRI('');
					$target->set_scheme($base->get_scheme());
					$target->set_userinfo($base->get_userinfo());
					$target->set_host($base->get_host());
					$target->set_port($base->get_port());
					if ($relative->get_path() !== null)
					{
						if (strpos($relative->get_path(), '/') === 0)
						{
							$target->set_path($relative->get_path());
						}
						elseif (($base->get_userinfo() !== null || $base->get_host() !== null || $base->get_port() !== null) && $base->get_path() === null)
						{
							$target->set_path('/' . $relative->get_path());
						}
						elseif (($last_segment = strrpos($base->get_path(), '/')) !== false)
						{
							$target->set_path(substr($base->get_path(), 0, $last_segment + 1) . $relative->get_path());
						}
						else
						{
							$target->set_path($relative->get_path());
						}
						$target->set_query($relative->get_query());
					}
					else
					{
						$target->set_path($base->get_path());
						if ($relative->get_query() !== null)
						{
							$target->set_query($relative->get_query());
						}
						elseif ($base->get_query() !== null)
						{
							$target->set_query($base->get_query());
						}
					}
				}
				$target->set_fragment($relative->get_fragment());
			}
			else
			{
				// No base URL, just return the relative URL
				$target = $relative;
			}
		}
		else
		{
			$target = $base;
		}
		return $target;
	}

	/**
	 * Parse an IRI into scheme/authority/path/query/fragment segments
	 *
	 * @access private
	 * @param string $iri
	 * @return array
	 */
	function parse_iri($iri)
	{
		preg_match('/^(([^:\/?#]+):)?(\/\/([^\/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?$/', $iri, $match);
		for ($i = count($match); $i <= 9; $i++)
		{
			$match[$i] = '';
		}
		return array('scheme' => $match[2], 'authority' => $match[4], 'path' => $match[5], 'query' => $match[7], 'fragment' => $match[9]);
	}

	/**
	 * Remove dot segments from a path
	 *
	 * @access private
	 * @param string $input
	 * @return string
	 */
	function remove_dot_segments($input)
	{
		$output = '';
		while (strpos($input, './') !== false || strpos($input, '/.') !== false || $input === '.' || $input === '..')
		{
			// A: If the input buffer begins with a prefix of "../" or "./", then remove that prefix from the input buffer; otherwise,
			if (strpos($input, '../') === 0)
			{
				$input = substr($input, 3);
			}
			elseif (strpos($input, './') === 0)
			{
				$input = substr($input, 2);
			}
			// B: if the input buffer begins with a prefix of "/./" or "/.", where "." is a complete path segment, then replace that prefix with "/" in the input buffer; otherwise,
			elseif (strpos($input, '/./') === 0)
			{
				$input = substr_replace($input, '/', 0, 3);
			}
			elseif ($input === '/.')
			{
				$input = '/';
			}
			// C: if the input buffer begins with a prefix of "/../" or "/..", where ".." is a complete path segment, then replace that prefix with "/" in the input buffer and remove the last segment and its preceding "/" (if any) from the output buffer; otherwise,
			elseif (strpos($input, '/../') === 0)
			{
				$input = substr_replace($input, '/', 0, 4);
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			elseif ($input === '/..')
			{
				$input = '/';
				$output = substr_replace($output, '', strrpos($output, '/'));
			}
			// D: if the input buffer consists only of "." or "..", then remove that from the input buffer; otherwise,
			elseif ($input === '.' || $input === '..')
			{
				$input = '';
			}
			// E: move the first path segment in the input buffer to the end of the output buffer, including the initial "/" character (if any) and any subsequent characters up to, but not including, the next "/" character or the end of the input buffer
			elseif (($pos = strpos($input, '/', 1)) !== false)
			{
				$output .= substr($input, 0, $pos);
				$input = substr_replace($input, '', 0, $pos);
			}
			else
			{
				$output .= $input;
				$input = '';
			}
		}
		return $output . $input;
	}

	/**
	 * Replace invalid character with percent encoding
	 *
	 * @access private
	 * @param string $string Input string
	 * @param string $valid_chars Valid characters
	 * @param int $case Normalise case
	 * @return string
	 */
	function replace_invalid_with_pct_encoding($string, $valid_chars, $case = SIMPLEPIE_SAME_CASE)
	{
		// Normalise case
		if ($case & SIMPLEPIE_LOWERCASE)
		{
			$string = strtolower($string);
		}
		elseif ($case & SIMPLEPIE_UPPERCASE)
		{
			$string = strtoupper($string);
		}

		// Store position and string length (to avoid constantly recalculating this)
		$position = 0;
		$strlen = strlen($string);

		// Loop as long as we have invalid characters, advancing the position to the next invalid character
		while (($position += strspn($string, $valid_chars, $position)) < $strlen)
		{
			// If we have a % character
			if ($string[$position] === '%')
			{
				// If we have a pct-encoded section
				if ($position + 2 < $strlen && strspn($string, '0123456789ABCDEFabcdef', $position + 1, 2) === 2)
				{
					// Get the the represented character
					$chr = chr(hexdec(substr($string, $position + 1, 2)));

					// If the character is valid, replace the pct-encoded with the actual character while normalising case
					if (strpos($valid_chars, $chr) !== false)
					{
						if ($case & SIMPLEPIE_LOWERCASE)
						{
							$chr = strtolower($chr);
						}
						elseif ($case & SIMPLEPIE_UPPERCASE)
						{
							$chr = strtoupper($chr);
						}
						$string = substr_replace($string, $chr, $position, 3);
						$strlen -= 2;
						$position++;
					}

					// Otherwise just normalise the pct-encoded to uppercase
					else
					{
						$string = substr_replace($string, strtoupper(substr($string, $position + 1, 2)), $position + 1, 2);
						$position += 3;
					}
				}
				// If we don't have a pct-encoded section, just replace the % with its own esccaped form
				else
				{
					$string = substr_replace($string, '%25', $position, 1);
					$strlen += 2;
					$position += 3;
				}
			}
			// If we have an invalid character, change into its pct-encoded form
			else
			{
				$replacement = sprintf("%%%02X", ord($string[$position]));
				$string = str_replace($string[$position], $replacement, $string);
				$strlen = strlen($string);
			}
		}
		return $string;
	}

	/**
	 * Check if the object represents a valid IRI
	 *
	 * @access public
	 * @return bool
	 */
	function is_valid()
	{
		return array_sum($this->valid) === count($this->valid);
	}

	/**
	 * Set the scheme. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @access public
	 * @param string $scheme
	 * @return bool
	 */
	function set_scheme($scheme)
	{
		if ($scheme === null || $scheme === '')
		{
			$this->scheme = null;
		}
		else
		{
			$len = strlen($scheme);
			switch (true)
			{
				case $len > 1:
					if (!strspn($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-.', 1))
					{
						$this->scheme = null;
						$this->valid[__FUNCTION__] = false;
						return false;
					}

				case $len > 0:
					if (!strspn($scheme, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', 0, 1))
					{
						$this->scheme = null;
						$this->valid[__FUNCTION__] = false;
						return false;
					}
			}
			$this->scheme = strtolower($scheme);
		}
		$this->valid[__FUNCTION__] = true;
		return true;
	}

	/**
	 * Set the authority. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @access public
	 * @param string $authority
	 * @return bool
	 */
	function set_authority($authority)
	{
		if (($userinfo_end = strrpos($authority, '@')) !== false)
		{
			$userinfo = substr($authority, 0, $userinfo_end);
			$authority = substr($authority, $userinfo_end + 1);
		}
		else
		{
			$userinfo = null;
		}

		if (($port_start = strpos($authority, ':')) !== false)
		{
			$port = substr($authority, $port_start + 1);
			$authority = substr($authority, 0, $port_start);
		}
		else
		{
			$port = null;
		}

		return $this->set_userinfo($userinfo) && $this->set_host($authority) && $this->set_port($port);
	}

	/**
	 * Set the userinfo.
	 *
	 * @access public
	 * @param string $userinfo
	 * @return bool
	 */
	function set_userinfo($userinfo)
	{
		if ($userinfo === null || $userinfo === '')
		{
			$this->userinfo = null;
		}
		else
		{
			$this->userinfo = $this->replace_invalid_with_pct_encoding($userinfo, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=:');
		}
		$this->valid[__FUNCTION__] = true;
		return true;
	}

	/**
	 * Set the host. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @access public
	 * @param string $host
	 * @return bool
	 */
	function set_host($host)
	{
		if ($host === null || $host === '')
		{
			$this->host = null;
			$this->valid[__FUNCTION__] = true;
			return true;
		}
		elseif ($host[0] === '[' && substr($host, -1) === ']')
		{
			if (Net_IPv6::checkIPv6(substr($host, 1, -1)))
			{
				$this->host = $host;
				$this->valid[__FUNCTION__] = true;
				return true;
			}
			else
			{
				$this->host = null;
				$this->valid[__FUNCTION__] = false;
				return false;
			}
		}
		else
		{
			$this->host = $this->replace_invalid_with_pct_encoding($host, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=', SIMPLEPIE_LOWERCASE);
			$this->valid[__FUNCTION__] = true;
			return true;
		}
	}

	/**
	 * Set the port. Returns true on success, false on failure (if there are
	 * any invalid characters).
	 *
	 * @access public
	 * @param string $port
	 * @return bool
	 */
	function set_port($port)
	{
		if ($port === null || $port === '')
		{
			$this->port = null;
			$this->valid[__FUNCTION__] = true;
			return true;
		}
		elseif (strspn($port, '0123456789') === strlen($port))
		{
			$this->port = (int) $port;
			$this->valid[__FUNCTION__] = true;
			return true;
		}
		else
		{
			$this->port = null;
			$this->valid[__FUNCTION__] = false;
			return false;
		}
	}

	/**
	 * Set the path.
	 *
	 * @access public
	 * @param string $path
	 * @return bool
	 */
	function set_path($path)
	{
		if ($path === null || $path === '')
		{
			$this->path = null;
			$this->valid[__FUNCTION__] = true;
			return true;
		}
		elseif (substr($path, 0, 2) === '//' && $this->userinfo === null && $this->host === null && $this->port === null)
		{
			$this->path = null;
			$this->valid[__FUNCTION__] = false;
			return false;
		}
		else
		{
			$this->path = $this->replace_invalid_with_pct_encoding($path, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=@/');
			if ($this->scheme !== null)
			{
				$this->path = $this->remove_dot_segments($this->path);
			}
			$this->valid[__FUNCTION__] = true;
			return true;
		}
	}

	/**
	 * Set the query.
	 *
	 * @access public
	 * @param string $query
	 * @return bool
	 */
	function set_query($query)
	{
		if ($query === null || $query === '')
		{
			$this->query = null;
		}
		else
		{
			$this->query = $this->replace_invalid_with_pct_encoding($query, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=:@/?');
		}
		$this->valid[__FUNCTION__] = true;
		return true;
	}

	/**
	 * Set the fragment.
	 *
	 * @access public
	 * @param string $fragment
	 * @return bool
	 */
	function set_fragment($fragment)
	{
		if ($fragment === null || $fragment === '')
		{
			$this->fragment = null;
		}
		else
		{
			$this->fragment = $this->replace_invalid_with_pct_encoding($fragment, 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~!$&\'()*+,;=:@/?');
		}
		$this->valid[__FUNCTION__] = true;
		return true;
	}

	/**
	 * Get the complete IRI
	 *
	 * @access public
	 * @return string
	 */
	function get_iri()
	{
		$iri = '';
		if ($this->scheme !== null)
		{
			$iri .= $this->scheme . ':';
		}
		if (($authority = $this->get_authority()) !== null)
		{
			$iri .= '//' . $authority;
		}
		if ($this->path !== null)
		{
			$iri .= $this->path;
		}
		if ($this->query !== null)
		{
			$iri .= '?' . $this->query;
		}
		if ($this->fragment !== null)
		{
			$iri .= '#' . $this->fragment;
		}

		if ($iri !== '')
		{
			return $iri;
		}
		else
		{
			return null;
		}
	}

	/**
	 * Get the scheme
	 *
	 * @access public
	 * @return string
	 */
	function get_scheme()
	{
		return $this->scheme;
	}

	/**
	 * Get the complete authority
	 *
	 * @access public
	 * @return string
	 */
	function get_authority()
	{
		$authority = '';
		if ($this->userinfo !== null)
		{
			$authority .= $this->userinfo . '@';
		}
		if ($this->host !== null)
		{
			$authority .= $this->host;
		}
		if ($this->port !== null)
		{
			$authority .= ':' . $this->port;
		}

		if ($authority !== '')
		{
			return $authority;
		}
		else
		{
			return null;
		}
	}

	/**
	 * Get the user information
	 *
	 * @access public
	 * @return string
	 */
	function get_userinfo()
	{
		return $this->userinfo;
	}

	/**
	 * Get the host
	 *
	 * @access public
	 * @return string
	 */
	function get_host()
	{
		return $this->host;
	}

	/**
	 * Get the port
	 *
	 * @access public
	 * @return string
	 */
	function get_port()
	{
		return $this->port;
	}

	/**
	 * Get the path
	 *
	 * @access public
	 * @return string
	 */
	function get_path()
	{
		return $this->path;
	}

	/**
	 * Get the query
	 *
	 * @access public
	 * @return string
	 */
	function get_query()
	{
		return $this->query;
	}

	/**
	 * Get the fragment
	 *
	 * @access public
	 * @return string
	 */
	function get_fragment()
	{
		return $this->fragment;
	}
}

/**
 * Class to validate and to work with IPv6 addresses.
 *
 * @package SimplePie
 * @copyright 2003-2005 The PHP Group
 * @license http://www.opensource.org/licenses/bsd-license.php
 * @link http://pear.php.net/package/Net_IPv6
 * @author Alexander Merz <alexander.merz@web.de>
 * @author elfrink at introweb dot nl
 * @author Josh Peck <jmp at joshpeck dot org>
 * @author Geoffrey Sneddon <geoffers@gmail.com>
 */
class SimplePie_Net_IPv6
{
	/**
	 * Removes a possible existing netmask specification of an IP address.
	 *
	 * @param string $ip the (compressed) IP as Hex representation
	 * @return string the IP the without netmask
	 * @since 1.1.0
	 * @access public
	 * @static
	 */
	function removeNetmaskSpec($ip)
	{
		if (strpos($ip, '/') !== false)
		{
			list($addr, $nm) = explode('/', $ip);
		}
		else
		{
			$addr = $ip;
		}
		return $addr;
	}

	/**
	 * Uncompresses an IPv6 address
	 *
	 * RFC 2373 allows you to compress zeros in an address to '::'. This
	 * function expects an valid IPv6 address and expands the '::' to
	 * the required zeros.
	 *
	 * Example:	 FF01::101	->	FF01:0:0:0:0:0:0:101
	 *			 ::1		->	0:0:0:0:0:0:0:1
	 *
	 * @access public
	 * @static
	 * @param string $ip a valid IPv6-address (hex format)
	 * @return string the uncompressed IPv6-address (hex format)
	 */
	function Uncompress($ip)
	{
		$uip = SimplePie_Net_IPv6::removeNetmaskSpec($ip);
		$c1 = -1;
		$c2 = -1;
		if (strpos($ip, '::') !== false)
		{
			list($ip1, $ip2) = explode('::', $ip);
			if ($ip1 === '')
			{
				$c1 = -1;
			}
			else
			{
				$pos = 0;
				if (($pos = substr_count($ip1, ':')) > 0)
				{
					$c1 = $pos;
				}
				else
				{
					$c1 = 0;
				}
			}
			if ($ip2 === '')
			{
				$c2 = -1;
			}
			else
			{
				$pos = 0;
				if (($pos = substr_count($ip2, ':')) > 0)
				{
					$c2 = $pos;
				}
				else
				{
					$c2 = 0;
				}
			}
			if (strstr($ip2, '.'))
			{
				$c2++;
			}
			// ::
			if ($c1 === -1 && $c2 === -1)
			{
				$uip = '0:0:0:0:0:0:0:0';
			}
			// ::xxx
			else if ($c1 === -1)
			{
				$fill = str_repeat('0:', 7 - $c2);
				$uip =	str_replace('::', $fill, $uip);
			}
			// xxx::
			else if ($c2 === -1)
			{
				$fill = str_repeat(':0', 7 - $c1);
				$uip =	str_replace('::', $fill, $uip);
			}
			// xxx::xxx
			else
			{
				$fill = str_repeat(':0:', 6 - $c2 - $c1);
				$uip =	str_replace('::', $fill, $uip);
				$uip =	str_replace('::', ':', $uip);
			}
		}
		return $uip;
	}

	/**
	 * Splits an IPv6 address into the IPv6 and a possible IPv4 part
	 *
	 * RFC 2373 allows you to note the last two parts of an IPv6 address as
	 * an IPv4 compatible address
	 *
	 * Example:	 0:0:0:0:0:0:13.1.68.3
	 *			 0:0:0:0:0:FFFF:129.144.52.38
	 *
	 * @access public
	 * @static
	 * @param string $ip a valid IPv6-address (hex format)
	 * @return array [0] contains the IPv6 part, [1] the IPv4 part (hex format)
	 */
	function SplitV64($ip)
	{
		$ip = SimplePie_Net_IPv6::Uncompress($ip);
		if (strstr($ip, '.'))
		{
			$pos = strrpos($ip, ':');
			$ip[$pos] = '_';
			$ipPart = explode('_', $ip);
			return $ipPart;
		}
		else
		{
			return array($ip, '');
		}
	}

	/**
	 * Checks an IPv6 address
	 *
	 * Checks if the given IP is IPv6-compatible
	 *
	 * @access public
	 * @static
	 * @param string $ip a valid IPv6-address
	 * @return bool true if $ip is an IPv6 address
	 */
	function checkIPv6($ip)
	{
		$ipPart = SimplePie_Net_IPv6::SplitV64($ip);
		$count = 0;
		if (!empty($ipPart[0]))
		{
			$ipv6 = explode(':', $ipPart[0]);
			for ($i = 0; $i < count($ipv6); $i++)
			{
				$dec = hexdec($ipv6[$i]);
				$hex = strtoupper(preg_replace('/^[0]{1,3}(.*[0-9a-fA-F])$/', '\\1', $ipv6[$i]));
				if ($ipv6[$i] >= 0 && $dec <= 65535 && $hex === strtoupper(dechex($dec)))
				{
					$count++;
				}
			}
			if ($count === 8)
			{
				return true;
			}
			elseif ($count === 6 && !empty($ipPart[1]))
			{
				$ipv4 = explode('.', $ipPart[1]);
				$count = 0;
				foreach ($ipv4 as $ipv4_part)
				{
					if ($ipv4_part >= 0 && $ipv4_part <= 255 && preg_match('/^\d{1,3}$/', $ipv4_part))
					{
						$count++;
					}
				}
				if ($count === 4)
				{
					return true;
				}
			}
			else
			{
				return false;
			}

		}
		else
		{
			return false;
		}
	}
}

/**
 * Date Parser
 *
 * @package SimplePie
 */
class SimplePie_Parse_Date
{
	/**
	 * Input data
	 *
	 * @access protected
	 * @var string
	 */
	var $date;

	/**
	 * List of days, calendar day name => ordinal day number in the week
	 *
	 * @access protected
	 * @var array
	 */
	var $day = array(
		// English
		'mon' => 1,
		'monday' => 1,
		'tue' => 2,
		'tuesday' => 2,
		'wed' => 3,
		'wednesday' => 3,
		'thu' => 4,
		'thursday' => 4,
		'fri' => 5,
		'friday' => 5,
		'sat' => 6,
		'saturday' => 6,
		'sun' => 7,
		'sunday' => 7,
		// Dutch
		'maandag' => 1,
		'dinsdag' => 2,
		'woensdag' => 3,
		'donderdag' => 4,
		'vrijdag' => 5,
		'zaterdag' => 6,
		'zondag' => 7,
		// French
		'lundi' => 1,
		'mardi' => 2,
		'mercredi' => 3,
		'jeudi' => 4,
		'vendredi' => 5,
		'samedi' => 6,
		'dimanche' => 7,
		// German
		'montag' => 1,
		'dienstag' => 2,
		'mittwoch' => 3,
		'donnerstag' => 4,
		'freitag' => 5,
		'samstag' => 6,
		'sonnabend' => 6,
		'sonntag' => 7,
		// Italian
		'lunedì' => 1,
		'martedì' => 2,
		'mercoledì' => 3,
		'giovedì' => 4,
		'venerdì' => 5,
		'sabato' => 6,
		'domenica' => 7,
		// Spanish
		'lunes' => 1,
		'martes' => 2,
		'miércoles' => 3,
		'jueves' => 4,
		'viernes' => 5,
		'sábado' => 6,
		'domingo' => 7,
		// Finnish
		'maanantai' => 1,
		'tiistai' => 2,
		'keskiviikko' => 3,
		'torstai' => 4,
		'perjantai' => 5,
		'lauantai' => 6,
		'sunnuntai' => 7,
		// Hungarian
		'hétfő' => 1,
		'kedd' => 2,
		'szerda' => 3,
		'csütörtok' => 4,
		'péntek' => 5,
		'szombat' => 6,
		'vasárnap' => 7,
		// Greek
		'Δευ' => 1,
		'Τρι' => 2,
		'Τετ' => 3,
		'Πεμ' => 4,
		'Παρ' => 5,
		'Σαβ' => 6,
		'Κυρ' => 7,
	);

	/**
	 * List of months, calendar month name => calendar month number
	 *
	 * @access protected
	 * @var array
	 */
	var $month = array(
		// English
		'jan' => 1,
		'january' => 1,
		'feb' => 2,
		'february' => 2,
		'mar' => 3,
		'march' => 3,
		'apr' => 4,
		'april' => 4,
		'may' => 5,
		// No long form of May
		'jun' => 6,
		'june' => 6,
		'jul' => 7,
		'july' => 7,
		'aug' => 8,
		'august' => 8,
		'sep' => 9,
		'september' => 8,
		'oct' => 10,
		'october' => 10,
		'nov' => 11,
		'november' => 11,
		'dec' => 12,
		'december' => 12,
		// Dutch
		'januari' => 1,
		'februari' => 2,
		'maart' => 3,
		'april' => 4,
		'mei' => 5,
		'juni' => 6,
		'juli' => 7,
		'augustus' => 8,
		'september' => 9,
		'oktober' => 10,
		'november' => 11,
		'december' => 12,
		// French
		'janvier' => 1,
		'février' => 2,
		'mars' => 3,
		'avril' => 4,
		'mai' => 5,
		'juin' => 6,
		'juillet' => 7,
		'août' => 8,
		'septembre' => 9,
		'octobre' => 10,
		'novembre' => 11,
		'décembre' => 12,
		// German
		'januar' => 1,
		'februar' => 2,
		'märz' => 3,
		'april' => 4,
		'mai' => 5,
		'juni' => 6,
		'juli' => 7,
		'august' => 8,
		'september' => 9,
		'oktober' => 10,
		'november' => 11,
		'dezember' => 12,
		// Italian
		'gennaio' => 1,
		'febbraio' => 2,
		'marzo' => 3,
		'aprile' => 4,
		'maggio' => 5,
		'giugno' => 6,
		'luglio' => 7,
		'agosto' => 8,
		'settembre' => 9,
		'ottobre' => 10,
		'novembre' => 11,
		'dicembre' => 12,
		// Spanish
		'enero' => 1,
		'febrero' => 2,
		'marzo' => 3,
		'abril' => 4,
		'mayo' => 5,
		'junio' => 6,
		'julio' => 7,
		'agosto' => 8,
		'septiembre' => 9,
		'setiembre' => 9,
		'octubre' => 10,
		'noviembre' => 11,
		'diciembre' => 12,
		// Finnish
		'tammikuu' => 1,
		'helmikuu' => 2,
		'maaliskuu' => 3,
		'huhtikuu' => 4,
		'toukokuu' => 5,
		'kesäkuu' => 6,
		'heinäkuu' => 7,
		'elokuu' => 8,
		'suuskuu' => 9,
		'lokakuu' => 10,
		'marras' => 11,
		'joulukuu' => 12,
		// Hungarian
		'január' => 1,
		'február' => 2,
		'március' => 3,
		'április' => 4,
		'május' => 5,
		'június' => 6,
		'július' => 7,
		'augusztus' => 8,
		'szeptember' => 9,
		'október' => 10,
		'november' => 11,
		'december' => 12,
		// Greek
		'Ιαν' => 1,
		'Φεβ' => 2,
		'Μάώ' => 3,
		'Μαώ' => 3,
		'Απρ' => 4,
		'Μάι' => 5,
		'Μαϊ' => 5,
		'Μαι' => 5,
		'Ιούν' => 6,
		'Ιον' => 6,
		'Ιούλ' => 7,
		'Ιολ' => 7,
		'Αύγ' => 8,
		'Αυγ' => 8,
		'Σεπ' => 9,
		'Οκτ' => 10,
		'Νοέ' => 11,
		'Δεκ' => 12,
	);

	/**
	 * List of timezones, abbreviation => offset from UTC
	 *
	 * @access protected
	 * @var array
	 */
	var $timezone = array(
		'ACDT' => 37800,
		'ACIT' => 28800,
		'ACST' => 34200,
		'ACT' => -18000,
		'ACWDT' => 35100,
		'ACWST' => 31500,
		'AEDT' => 39600,
		'AEST' => 36000,
		'AFT' => 16200,
		'AKDT' => -28800,
		'AKST' => -32400,
		'AMDT' => 18000,
		'AMT' => -14400,
		'ANAST' => 46800,
		'ANAT' => 43200,
		'ART' => -10800,
		'AZOST' => -3600,
		'AZST' => 18000,
		'AZT' => 14400,
		'BIOT' => 21600,
		'BIT' => -43200,
		'BOT' => -14400,
		'BRST' => -7200,
		'BRT' => -10800,
		'BST' => 3600,
		'BTT' => 21600,
		'CAST' => 18000,
		'CAT' => 7200,
		'CCT' => 23400,
		'CDT' => -18000,
		'CEDT' => 7200,
		'CET' => 3600,
		'CGST' => -7200,
		'CGT' => -10800,
		'CHADT' => 49500,
		'CHAST' => 45900,
		'CIST' => -28800,
		'CKT' => -36000,
		'CLDT' => -10800,
		'CLST' => -14400,
		'COT' => -18000,
		'CST' => -21600,
		'CVT' => -3600,
		'CXT' => 25200,
		'DAVT' => 25200,
		'DTAT' => 36000,
		'EADT' => -18000,
		'EAST' => -21600,
		'EAT' => 10800,
		'ECT' => -18000,
		'EDT' => -14400,
		'EEST' => 10800,
		'EET' => 7200,
		'EGT' => -3600,
		'EKST' => 21600,
		'EST' => -18000,
		'FJT' => 43200,
		'FKDT' => -10800,
		'FKST' => -14400,
		'FNT' => -7200,
		'GALT' => -21600,
		'GEDT' => 14400,
		'GEST' => 10800,
		'GFT' => -10800,
		'GILT' => 43200,
		'GIT' => -32400,
		'GST' => 14400,
		'GST' => -7200,
		'GYT' => -14400,
		'HAA' => -10800,
		'HAC' => -18000,
		'HADT' => -32400,
		'HAE' => -14400,
		'HAP' => -25200,
		'HAR' => -21600,
		'HAST' => -36000,
		'HAT' => -9000,
		'HAY' => -28800,
		'HKST' => 28800,
		'HMT' => 18000,
		'HNA' => -14400,
		'HNC' => -21600,
		'HNE' => -18000,
		'HNP' => -28800,
		'HNR' => -25200,
		'HNT' => -12600,
		'HNY' => -32400,
		'IRDT' => 16200,
		'IRKST' => 32400,
		'IRKT' => 28800,
		'IRST' => 12600,
		'JFDT' => -10800,
		'JFST' => -14400,
		'JST' => 32400,
		'KGST' => 21600,
		'KGT' => 18000,
		'KOST' => 39600,
		'KOVST' => 28800,
		'KOVT' => 25200,
		'KRAST' => 28800,
		'KRAT' => 25200,
		'KST' => 32400,
		'LHDT' => 39600,
		'LHST' => 37800,
		'LINT' => 50400,
		'LKT' => 21600,
		'MAGST' => 43200,
		'MAGT' => 39600,
		'MAWT' => 21600,
		'MDT' => -21600,
		'MESZ' => 7200,
		'MEZ' => 3600,
		'MHT' => 43200,
		'MIT' => -34200,
		'MNST' => 32400,
		'MSDT' => 14400,
		'MSST' => 10800,
		'MST' => -25200,
		'MUT' => 14400,
		'MVT' => 18000,
		'MYT' => 28800,
		'NCT' => 39600,
		'NDT' => -9000,
		'NFT' => 41400,
		'NMIT' => 36000,
		'NOVST' => 25200,
		'NOVT' => 21600,
		'NPT' => 20700,
		'NRT' => 43200,
		'NST' => -12600,
		'NUT' => -39600,
		'NZDT' => 46800,
		'NZST' => 43200,
		'OMSST' => 25200,
		'OMST' => 21600,
		'PDT' => -25200,
		'PET' => -18000,
		'PETST' => 46800,
		'PETT' => 43200,
		'PGT' => 36000,
		'PHOT' => 46800,
		'PHT' => 28800,
		'PKT' => 18000,
		'PMDT' => -7200,
		'PMST' => -10800,
		'PONT' => 39600,
		'PST' => -28800,
		'PWT' => 32400,
		'PYST' => -10800,
		'PYT' => -14400,
		'RET' => 14400,
		'ROTT' => -10800,
		'SAMST' => 18000,
		'SAMT' => 14400,
		'SAST' => 7200,
		'SBT' => 39600,
		'SCDT' => 46800,
		'SCST' => 43200,
		'SCT' => 14400,
		'SEST' => 3600,
		'SGT' => 28800,
		'SIT' => 28800,
		'SRT' => -10800,
		'SST' => -39600,
		'SYST' => 10800,
		'SYT' => 7200,
		'TFT' => 18000,
		'THAT' => -36000,
		'TJT' => 18000,
		'TKT' => -36000,
		'TMT' => 18000,
		'TOT' => 46800,
		'TPT' => 32400,
		'TRUT' => 36000,
		'TVT' => 43200,
		'TWT' => 28800,
		'UYST' => -7200,
		'UYT' => -10800,
		'UZT' => 18000,
		'VET' => -14400,
		'VLAST' => 39600,
		'VLAT' => 36000,
		'VOST' => 21600,
		'VUT' => 39600,
		'WAST' => 7200,
		'WAT' => 3600,
		'WDT' => 32400,
		'WEST' => 3600,
		'WFT' => 43200,
		'WIB' => 25200,
		'WIT' => 32400,
		'WITA' => 28800,
		'WKST' => 18000,
		'WST' => 28800,
		'YAKST' => 36000,
		'YAKT' => 32400,
		'YAPT' => 36000,
		'YEKST' => 21600,
		'YEKT' => 18000,
	);

	/**
	 * Cached PCRE for SimplePie_Parse_Date::$day
	 *
	 * @access protected
	 * @var string
	 */
	var $day_pcre;

	/**
	 * Cached PCRE for SimplePie_Parse_Date::$month
	 *
	 * @access protected
	 * @var string
	 */
	var $month_pcre;

	/**
	 * Array of user-added callback methods
	 *
	 * @access private
	 * @var array
	 */
	var $built_in = array();

	/**
	 * Array of user-added callback methods
	 *
	 * @access private
	 * @var array
	 */
	var $user = array();

	/**
	 * Create new SimplePie_Parse_Date object, and set self::day_pcre,
	 * self::month_pcre, and self::built_in
	 *
	 * @access private
	 */
	function SimplePie_Parse_Date()
	{
		$this->day_pcre = '(' . implode(array_keys($this->day), '|') . ')';
		$this->month_pcre = '(' . implode(array_keys($this->month), '|') . ')';

		static $cache;
		if (!isset($cache[get_class($this)]))
		{
			$all_methods = get_class_methods($this);

			foreach ($all_methods as $method)
			{
				if (strtolower(substr($method, 0, 5)) === 'date_')
				{
					$cache[get_class($this)][] = $method;
				}
			}
		}

		foreach ($cache[get_class($this)] as $method)
		{
			$this->built_in[] = $method;
		}
	}

	/**
	 * Get the object
	 *
	 * @access public
	 */
	function get()
	{
		static $object;
		if (!$object)
		{
			$object =& new SimplePie_Parse_Date;
		}
		return $object;
	}

	/**
	 * Parse a date
	 *
	 * @final
	 * @access public
	 * @param string $date Date to parse
	 * @return int Timestamp corresponding to date string, or false on failure
	 */
	function parse($date)
	{
		foreach ($this->user as $method)
		{
			if (($returned = call_user_func($method, $date)) !== false)
			{
				return $returned;
			}
		}

		foreach ($this->built_in as $method)
		{
			if (($returned = call_user_func(array(&$this, $method), $date)) !== false)
			{
				return $returned;
			}
		}

		return false;
	}

	/**
	 * Add a callback method to parse a date
	 *
	 * @final
	 * @access public
	 * @param callback $callback
	 */
	function add_callback($callback)
	{
		if (is_callable($callback))
		{
			$this->user[] = $callback;
		}
		else
		{
			trigger_error('User-supplied function must be a valid callback', E_USER_WARNING);
		}
	}

	/**
	 * Parse a superset of W3C-DTF (allows hyphens and colons to be omitted, as
	 * well as allowing any of upper or lower case "T", horizontal tabs, or
	 * spaces to be used as the time seperator (including more than one))
	 *
	 * @access protected
	 * @return int Timestamp
	 */
	function date_w3cdtf($date)
	{
		static $pcre;
		if (!$pcre)
		{
			$year = '([0-9]{4})';
			$month = $day = $hour = $minute = $second = '([0-9]{2})';
			$decimal = '([0-9]*)';
			$zone = '(?:(Z)|([+\-])([0-9]{1,2}):?([0-9]{1,2}))';
			$pcre = '/^' . $year . '(?:-?' . $month . '(?:-?' . $day . '(?:[Tt\x09\x20]+' . $hour . '(?::?' . $minute . '(?::?' . $second . '(?:.' . $decimal . ')?)?)?' . $zone . ')?)?)?$/';
		}
		if (preg_match($pcre, $date, $match))
		{
			/*
			Capturing subpatterns:
			1: Year
			2: Month
			3: Day
			4: Hour
			5: Minute
			6: Second
			7: Decimal fraction of a second
			8: Zulu
			9: Timezone ±
			10: Timezone hours
			11: Timezone minutes
			*/

			// Fill in empty matches
			for ($i = count($match); $i <= 3; $i++)
			{
				$match[$i] = '1';
			}

			for ($i = count($match); $i <= 7; $i++)
			{
				$match[$i] = '0';
			}

			// Numeric timezone
			if (isset($match[9]) && $match[9] !== '')
			{
				$timezone = $match[10] * 3600;
				$timezone += $match[11] * 60;
				if ($match[9] === '-')
				{
					$timezone = 0 - $timezone;
				}
			}
			else
			{
				$timezone = 0;
			}

			// Convert the number of seconds to an integer, taking decimals into account
			$second = round($match[6] + $match[7] / pow(10, strlen($match[7])));

			return gmmktime($match[4], $match[5], $second, $match[2], $match[3], $match[1]) - $timezone;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Remove RFC822 comments
	 *
	 * @access protected
	 * @param string $data Data to strip comments from
	 * @return string Comment stripped string
	 */
	function remove_rfc2822_comments($string)
	{
		$string = (string) $string;
		$position = 0;
		$length = strlen($string);
		$depth = 0;

		$output = '';

		while ($position < $length && ($pos = strpos($string, '(', $position)) !== false)
		{
			$output .= substr($string, $position, $pos - $position);
			$position = $pos + 1;
			if ($string[$pos - 1] !== '\\')
			{
				$depth++;
				while ($depth && $position < $length)
				{
					$position += strcspn($string, '()', $position);
					if ($string[$position - 1] === '\\')
					{
						$position++;
						continue;
					}
					elseif (isset($string[$position]))
					{
						switch ($string[$position])
						{
							case '(':
								$depth++;
								break;

							case ')':
								$depth--;
								break;
						}
						$position++;
					}
					else
					{
						break;
					}
				}
			}
			else
			{
				$output .= '(';
			}
		}
		$output .= substr($string, $position);

		return $output;
	}

	/**
	 * Parse RFC2822's date format
	 *
	 * @access protected
	 * @return int Timestamp
	 */
	function date_rfc2822($date)
	{
		static $pcre;
		if (!$pcre)
		{
			$wsp = '[\x09\x20]';
			$fws = '(?:' . $wsp . '+|' . $wsp . '*(?:\x0D\x0A' . $wsp . '+)+)';
			$optional_fws = $fws . '?';
			$day_name = $this->day_pcre;
			$month = $this->month_pcre;
			$day = '([0-9]{1,2})';
			$hour = $minute = $second = '([0-9]{2})';
			$year = '([0-9]{2,4})';
			$num_zone = '([+\-])([0-9]{2})([0-9]{2})';
			$character_zone = '([A-Z]{1,5})';
			$zone = '(?:' . $num_zone . '|' . $character_zone . ')';
			$pcre = '/(?:' . $optional_fws . $day_name . $optional_fws . ',)?' . $optional_fws . $day . $fws . $month . $fws . $year . $fws . $hour . $optional_fws . ':' . $optional_fws . $minute . '(?:' . $optional_fws . ':' . $optional_fws . $second . ')?' . $fws . $zone . '/i';
		}
		if (preg_match($pcre, $this->remove_rfc2822_comments($date), $match))
		{
			/*
			Capturing subpatterns:
			1: Day name
			2: Day
			3: Month
			4: Year
			5: Hour
			6: Minute
			7: Second
			8: Timezone ±
			9: Timezone hours
			10: Timezone minutes
			11: Alphabetic timezone
			*/

			// Find the month number
			$month = $this->month[strtolower($match[3])];

			// Numeric timezone
			if ($match[8] !== '')
			{
				$timezone = $match[9] * 3600;
				$timezone += $match[10] * 60;
				if ($match[8] === '-')
				{
					$timezone = 0 - $timezone;
				}
			}
			// Character timezone
			elseif (isset($this->timezone[strtoupper($match[11])]))
			{
				$timezone = $this->timezone[strtoupper($match[11])];
			}
			// Assume everything else to be -0000
			else
			{
				$timezone = 0;
			}

			// Deal with 2/3 digit years
			if ($match[4] < 50)
			{
				$match[4] += 2000;
			}
			elseif ($match[4] < 1000)
			{
				$match[4] += 1900;
			}

			// Second is optional, if it is empty set it to zero
			if ($match[7] !== '')
			{
				$second = $match[7];
			}
			else
			{
				$second = 0;
			}

			return gmmktime($match[5], $match[6], $second, $month, $match[2], $match[4]) - $timezone;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Parse RFC850's date format
	 *
	 * @access protected
	 * @return int Timestamp
	 */
	function date_rfc850($date)
	{
		static $pcre;
		if (!$pcre)
		{
			$space = '[\x09\x20]+';
			$day_name = $this->day_pcre;
			$month = $this->month_pcre;
			$day = '([0-9]{1,2})';
			$year = $hour = $minute = $second = '([0-9]{2})';
			$zone = '([A-Z]{1,5})';
			$pcre = '/^' . $day_name . ',' . $space . $day . '-' . $month . '-' . $year . $space . $hour . ':' . $minute . ':' . $second . $space . $zone . '$/i';
		}
		if (preg_match($pcre, $date, $match))
		{
			/*
			Capturing subpatterns:
			1: Day name
			2: Day
			3: Month
			4: Year
			5: Hour
			6: Minute
			7: Second
			8: Timezone
			*/

			// Month
			$month = $this->month[strtolower($match[3])];

			// Character timezone
			if (isset($this->timezone[strtoupper($match[8])]))
			{
				$timezone = $this->timezone[strtoupper($match[8])];
			}
			// Assume everything else to be -0000
			else
			{
				$timezone = 0;
			}

			// Deal with 2 digit year
			if ($match[4] < 50)
			{
				$match[4] += 2000;
			}
			else
			{
				$match[4] += 1900;
			}

			return gmmktime($match[5], $match[6], $match[7], $month, $match[2], $match[4]) - $timezone;
		}
		else
		{
			return false;
		}
	}

	/**
	 * Parse C99's asctime()'s date format
	 *
	 * @access protected
	 * @return int Timestamp
	 */
	function date_asctime($date)
	{
		static $pcre;
		if (!$pcre)
		{
			$space = '[\x09\x20]+';
			$wday_name = $this->day_pcre;
			$mon_name = $this->month_pcre;
			$day = '([0-9]{1,2})';
			$hour = $sec = $min = '([0-9]{2})';
			$year = '([0-9]{4})';
			$terminator = '\x0A?\x00?';
			$pcre = '/^' . $wday_name . $space . $mon_name . $space . $day . $space . $hour . ':' . $min . ':' . $sec . $space . $year . $terminator . '$/i';
		}
		if (preg_match($pcre, $date, $match))
		{
			/*
			Capturing subpatterns:
			1: Day name
			2: Month
			3: Day
			4: Hour
			5: Minute
			6: Second
			7: Year
			*/

			$month = $this->month[strtolower($match[2])];
			return gmmktime($match[4], $match[5], $match[6], $month, $match[3], $match[7]);
		}
		else
		{
			return false;
		}
	}

	/**
	 * Parse dates using strtotime()
	 *
	 * @access protected
	 * @return int Timestamp
	 */
	function date_strtotime($date)
	{
		$strtotime = strtotime($date);
		if ($strtotime === -1 || $strtotime === false)
		{
			return false;
		}
		else
		{
			return $strtotime;
		}
	}
}

/**
 * Content-type sniffing
 *
 * @package SimplePie
 */
class SimplePie_Content_Type_Sniffer
{
	/**
	 * File object
	 *
	 * @var SimplePie_File
	 * @access private
	 */
	var $file;

	/**
	 * Create an instance of the class with the input file
	 *
	 * @access public
	 * @param SimplePie_Content_Type_Sniffer $file Input file
	 */
	function SimplePie_Content_Type_Sniffer($file)
	{
		$this->file = $file;
	}

	/**
	 * Get the Content-Type of the specified file
	 *
	 * @access public
	 * @return string Actual Content-Type
	 */
	function get_type()
	{
		if (isset($this->file->headers['content-type']))
		{
			if (!isset($this->file->headers['content-encoding'])
				&& ($this->file->headers['content-type'] === 'text/plain'
					|| $this->file->headers['content-type'] === 'text/plain; charset=ISO-8859-1'
					|| $this->file->headers['content-type'] === 'text/plain; charset=iso-8859-1'))
			{
				return $this->text_or_binary();
			}

			if (($pos = strpos($this->file->headers['content-type'], ';')) !== false)
			{
				$official = substr($this->file->headers['content-type'], 0, $pos);
			}
			else
			{
				$official = $this->file->headers['content-type'];
			}
			$official = strtolower($official);

			if ($official === 'unknown/unknown'
				|| $official === 'application/unknown')
			{
				return $this->unknown();
			}
			elseif (substr($official, -4) === '+xml'
				|| $official === 'text/xml'
				|| $official === 'application/xml')
			{
				return $official;
			}
			elseif (substr($official, 0, 6) === 'image/')
			{
				if ($return = $this->image())
				{
					return $return;
				}
				else
				{
					return $official;
				}
			}
			elseif ($official === 'text/html')
			{
				return $this->feed_or_html();
			}
			else
			{
				return $official;
			}
		}
		else
		{
			return $this->unknown();
		}
	}

	/**
	 * Sniff text or binary
	 *
	 * @access private
	 * @return string Actual Content-Type
	 */
	function text_or_binary()
	{
		if (substr($this->file->body, 0, 2) === "\xFE\xFF"
			|| substr($this->file->body, 0, 2) === "\xFF\xFE"
			|| substr($this->file->body, 0, 4) === "\x00\x00\xFE\xFF"
			|| substr($this->file->body, 0, 3) === "\xEF\xBB\xBF")
		{
			return 'text/plain';
		}
		elseif (preg_match('/[\x00-\x08\x0E-\x1A\x1C-\x1F]/', $this->file->body))
		{
			return 'application/octect-stream';
		}
		else
		{
			return 'text/plain';
		}
	}

	/**
	 * Sniff unknown
	 *
	 * @access private
	 * @return string Actual Content-Type
	 */
	function unknown()
	{
		$ws = strspn($this->file->body, "\x09\x0A\x0B\x0C\x0D\x20");
		if (strtolower(substr($this->file->body, $ws, 14)) === '<!doctype html'
			|| strtolower(substr($this->file->body, $ws, 5)) === '<html'
			|| strtolower(substr($this->file->body, $ws, 7)) === '<script')
		{
			return 'text/html';
		}
		elseif (substr($this->file->body, 0, 5) === '%PDF-')
		{
			return 'application/pdf';
		}
		elseif (substr($this->file->body, 0, 11) === '%!PS-Adobe-')
		{
			return 'application/postscript';
		}
		elseif (substr($this->file->body, 0, 6) === 'GIF87a'
			|| substr($this->file->body, 0, 6) === 'GIF89a')
		{
			return 'image/gif';
		}
		elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
		{
			return 'image/png';
		}
		elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF")
		{
			return 'image/jpeg';
		}
		elseif (substr($this->file->body, 0, 2) === "\x42\x4D")
		{
			return 'image/bmp';
		}
		else
		{
			return $this->text_or_binary();
		}
	}

	/**
	 * Sniff images
	 *
	 * @access private
	 * @return string Actual Content-Type
	 */
	function image()
	{
		if (substr($this->file->body, 0, 6) === 'GIF87a'
			|| substr($this->file->body, 0, 6) === 'GIF89a')
		{
			return 'image/gif';
		}
		elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
		{
			return 'image/png';
		}
		elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF")
		{
			return 'image/jpeg';
		}
		elseif (substr($this->file->body, 0, 2) === "\x42\x4D")
		{
			return 'image/bmp';
		}
		else
		{
			return false;
		}
	}

	/**
	 * Sniff HTML
	 *
	 * @access private
	 * @return string Actual Content-Type
	 */
	function feed_or_html()
	{
		$len = strlen($this->file->body);
		$pos = strspn($this->file->body, "\x09\x0A\x0D\x20");

		while ($pos < $len)
		{
			switch ($this->file->body[$pos])
			{
				case "\x09":
				case "\x0A":
				case "\x0D":
				case "\x20":
					$pos += strspn($this->file->body, "\x09\x0A\x0D\x20", $pos);
					continue 2;

				case '<':
					$pos++;
					break;

				default:
					return 'text/html';
			}

			if (substr($this->file->body, $pos, 3) === '!--')
			{
				$pos += 3;
				if ($pos < $len && ($pos = strpos($this->file->body, '-->', $pos)) !== false)
				{
					$pos += 3;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 1) === '!')
			{
				if ($pos < $len && ($pos = strpos($this->file->body, '>', $pos)) !== false)
				{
					$pos++;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 1) === '?')
			{
				if ($pos < $len && ($pos = strpos($this->file->body, '?>', $pos)) !== false)
				{
					$pos += 2;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 3) === 'rss'
				|| substr($this->file->body, $pos, 7) === 'rdf:RDF')
			{
				return 'application/rss+xml';
			}
			elseif (substr($this->file->body, $pos, 4) === 'feed')
			{
				return 'application/atom+xml';
			}
			else
			{
				return 'text/html';
			}
		}

		return 'text/html';
	}
}

/**
 * Parses the XML Declaration
 *
 * @package SimplePie
 */
class SimplePie_XML_Declaration_Parser
{
	/**
	 * XML Version
	 *
	 * @access public
	 * @var string
	 */
	var $version = '1.0';

	/**
	 * Encoding
	 *
	 * @access public
	 * @var string
	 */
	var $encoding = 'UTF-8';

	/**
	 * Standalone
	 *
	 * @access public
	 * @var bool
	 */
	var $standalone = false;

	/**
	 * Current state of the state machine
	 *
	 * @access private
	 * @var string
	 */
	var $state = 'before_version_name';

	/**
	 * Input data
	 *
	 * @access private
	 * @var string
	 */
	var $data = '';

	/**
	 * Input data length (to avoid calling strlen() everytime this is needed)
	 *
	 * @access private
	 * @var int
	 */
	var $data_length = 0;

	/**
	 * Current position of the pointer
	 *
	 * @var int
	 * @access private
	 */
	var $position = 0;

	/**
	 * Create an instance of the class with the input data
	 *
	 * @access public
	 * @param string $data Input data
	 */
	function SimplePie_XML_Declaration_Parser($data)
	{
		$this->data = $data;
		$this->data_length = strlen($this->data);
	}

	/**
	 * Parse the input data
	 *
	 * @access public
	 * @return bool true on success, false on failure
	 */
	function parse()
	{
		while ($this->state && $this->state !== 'emit' && $this->has_data())
		{
			$state = $this->state;
			$this->$state();
		}
		$this->data = '';
		if ($this->state === 'emit')
		{
			return true;
		}
		else
		{
			$this->version = '';
			$this->encoding = '';
			$this->standalone = '';
			return false;
		}
	}

	/**
	 * Check whether there is data beyond the pointer
	 *
	 * @access private
	 * @return bool true if there is further data, false if not
	 */
	function has_data()
	{
		return (bool) ($this->position < $this->data_length);
	}

	/**
	 * Advance past any whitespace
	 *
	 * @return int Number of whitespace characters passed
	 */
	function skip_whitespace()
	{
		$whitespace = strspn($this->data, "\x09\x0A\x0D\x20", $this->position);
		$this->position += $whitespace;
		return $whitespace;
	}

	/**
	 * Read value
	 */
	function get_value()
	{
		$quote = substr($this->data, $this->position, 1);
		if ($quote === '"' || $quote === "'")
		{
			$this->position++;
			$len = strcspn($this->data, $quote, $this->position);
			if ($this->has_data())
			{
				$value = substr($this->data, $this->position, $len);
				$this->position += $len + 1;
				return $value;
			}
		}
		return false;
	}

	function before_version_name()
	{
		if ($this->skip_whitespace())
		{
			$this->state = 'version_name';
		}
		else
		{
			$this->state = false;
		}
	}

	function version_name()
	{
		if (substr($this->data, $this->position, 7) === 'version')
		{
			$this->position += 7;
			$this->skip_whitespace();
			$this->state = 'version_equals';
		}
		else
		{
			$this->state = false;
		}
	}

	function version_equals()
	{
		if (substr($this->data, $this->position, 1) === '=')
		{
			$this->position++;
			$this->skip_whitespace();
			$this->state = 'version_value';
		}
		else
		{
			$this->state = false;
		}
	}

	function version_value()
	{
		if ($this->version = $this->get_value())
		{
			$this->skip_whitespace();
			if ($this->has_data())
			{
				$this->state = 'encoding_name';
			}
			else
			{
				$this->state = 'emit';
			}
		}
		else
		{
			$this->state = 'standalone_name';
		}
	}

	function encoding_name()
	{
		if (substr($this->data, $this->position, 8) === 'encoding')
		{
			$this->position += 8;
			$this->skip_whitespace();
			$this->state = 'encoding_equals';
		}
		else
		{
			$this->state = false;
		}
	}

	function encoding_equals()
	{
		if (substr($this->data, $this->position, 1) === '=')
		{
			$this->position++;
			$this->skip_whitespace();
			$this->state = 'encoding_value';
		}
		else
		{
			$this->state = false;
		}
	}

	function encoding_value()
	{
		if ($this->encoding = $this->get_value())
		{
			$this->skip_whitespace();
			if ($this->has_data())
			{
				$this->state = 'standalone_name';
			}
			else
			{
				$this->state = 'emit';
			}
		}
		else
		{
			$this->state = false;
		}
	}

	function standalone_name()
	{
		if (substr($this->data, $this->position, 10) === 'standalone')
		{
			$this->position += 10;
			$this->skip_whitespace();
			$this->state = 'standalone_equals';
		}
		else
		{
			$this->state = false;
		}
	}

	function standalone_equals()
	{
		if (substr($this->data, $this->position, 1) === '=')
		{
			$this->position++;
			$this->skip_whitespace();
			$this->state = 'standalone_value';
		}
		else
		{
			$this->state = false;
		}
	}

	function standalone_value()
	{
		if ($standalone = $this->get_value())
		{
			switch ($standalone)
			{
				case 'yes':
					$this->standalone = true;
					break;

				case 'no':
					$this->standalone = false;
					break;

				default:
					$this->state = false;
					return;
			}

			$this->skip_whitespace();
			if ($this->has_data())
			{
				$this->state = false;
			}
			else
			{
				$this->state = 'emit';
			}
		}
		else
		{
			$this->state = false;
		}
	}
}

class SimplePie_Locator
{
	var $useragent;
	var $timeout;
	var $file;
	var $local = array();
	var $elsewhere = array();
	var $file_class = 'SimplePie_File';
	var $cached_entities = array();
	var $http_base;
	var $base;
	var $base_location = 0;
	var $checked_feeds = 0;
	var $max_checked_feeds = 10;
	var $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';

	function SimplePie_Locator(&$file, $timeout = 10, $useragent = null, $file_class = 'SimplePie_File', $max_checked_feeds = 10, $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer')
	{
		$this->file =& $file;
		$this->file_class = $file_class;
		$this->useragent = $useragent;
		$this->timeout = $timeout;
		$this->max_checked_feeds = $max_checked_feeds;
		$this->content_type_sniffer_class = $content_type_sniffer_class;
	}

	function find($type = SIMPLEPIE_LOCATOR_ALL, &$working)
	{
		if ($this->is_feed($this->file))
		{
			return $this->file;
		}

		if ($this->file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
		{
			$sniffer =& new $this->content_type_sniffer_class($this->file);
			if ($sniffer->get_type() !== 'text/html')
			{
				return null;
			}
		}

		if ($type & ~SIMPLEPIE_LOCATOR_NONE)
		{
			$this->get_base();
		}

		if ($type & SIMPLEPIE_LOCATOR_AUTODISCOVERY && $working = $this->autodiscovery())
		{
			return $working[0];
		}

		if ($type & (SIMPLEPIE_LOCATOR_LOCAL_EXTENSION | SIMPLEPIE_LOCATOR_LOCAL_BODY | SIMPLEPIE_LOCATOR_REMOTE_EXTENSION | SIMPLEPIE_LOCATOR_REMOTE_BODY) && $this->get_links())
		{
			if ($type & SIMPLEPIE_LOCATOR_LOCAL_EXTENSION && $working = $this->extension($this->local))
			{
				return $working;
			}

			if ($type & SIMPLEPIE_LOCATOR_LOCAL_BODY && $working = $this->body($this->local))
			{
				return $working;
			}

			if ($type & SIMPLEPIE_LOCATOR_REMOTE_EXTENSION && $working = $this->extension($this->elsewhere))
			{
				return $working;
			}

			if ($type & SIMPLEPIE_LOCATOR_REMOTE_BODY && $working = $this->body($this->elsewhere))
			{
				return $working;
			}
		}
		return null;
	}

	function is_feed(&$file)
	{
		if ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE)
		{
			$sniffer =& new $this->content_type_sniffer_class($file);
			$sniffed = $sniffer->get_type();
			if (in_array($sniffed, array('application/rss+xml', 'application/rdf+xml', 'text/rdf', 'application/atom+xml', 'text/xml', 'application/xml')))
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		elseif ($file->method & SIMPLEPIE_FILE_SOURCE_LOCAL)
		{
			return true;
		}
		else
		{
			return false;
		}
	}

	function get_base()
	{
		$this->http_base = $this->file->url;
		$this->base = $this->http_base;
		$elements = SimplePie_Misc::get_element('base', $this->file->body);
		foreach ($elements as $element)
		{
			if ($element['attribs']['href']['data'] !== '')
			{
				$this->base = SimplePie_Misc::absolutize_url(trim($element['attribs']['href']['data']), $this->http_base);
				$this->base_location = $element['offset'];
				break;
			}
		}
	}

	function autodiscovery()
	{
		$links = array_merge(SimplePie_Misc::get_element('link', $this->file->body), SimplePie_Misc::get_element('a', $this->file->body), SimplePie_Misc::get_element('area', $this->file->body));
		$done = array();
		$feeds = array();
		foreach ($links as $link)
		{
			if ($this->checked_feeds === $this->max_checked_feeds)
			{
				break;
			}
			if (isset($link['attribs']['href']['data']) && isset($link['attribs']['rel']['data']))
			{
				$rel = array_unique(SimplePie_Misc::space_seperated_tokens(strtolower($link['attribs']['rel']['data'])));

				if ($this->base_location < $link['offset'])
				{
					$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->base);
				}
				else
				{
					$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->http_base);
				}

				if (!in_array($href, $done) && in_array('feed', $rel) || (in_array('alternate', $rel) && !empty($link['attribs']['type']['data']) && in_array(strtolower(SimplePie_Misc::parse_mime($link['attribs']['type']['data'])), array('application/rss+xml', 'application/atom+xml'))) && !isset($feeds[$href]))
				{
					$this->checked_feeds++;
					$feed =& new $this->file_class($href, $this->timeout, 5, null, $this->useragent);
					if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
					{
						$feeds[$href] = $feed;
					}
				}
				$done[] = $href;
			}
		}

		if (!empty($feeds))
		{
			return array_values($feeds);
		}
		else {
			return null;
		}
	}

	function get_links()
	{
		$links = SimplePie_Misc::get_element('a', $this->file->body);
		foreach ($links as $link)
		{
			if (isset($link['attribs']['href']['data']))
			{
				$href = trim($link['attribs']['href']['data']);
				$parsed = SimplePie_Misc::parse_url($href);
				if ($parsed['scheme'] === '' || preg_match('/^(http(s)|feed)?$/i', $parsed['scheme']))
				{
					if ($this->base_location < $link['offset'])
					{
						$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->base);
					}
					else
					{
						$href = SimplePie_Misc::absolutize_url(trim($link['attribs']['href']['data']), $this->http_base);
					}

					$current = SimplePie_Misc::parse_url($this->file->url);

					if ($parsed['authority'] === '' || $parsed['authority'] === $current['authority'])
					{
						$this->local[] = $href;
					}
					else
					{
						$this->elsewhere[] = $href;
					}
				}
			}
		}
		$this->local = array_unique($this->local);
		$this->elsewhere = array_unique($this->elsewhere);
		if (!empty($this->local) || !empty($this->elsewhere))
		{
			return true;
		}
		return null;
	}

	function extension(&$array)
	{
		foreach ($array as $key => $value)
		{
			if ($this->checked_feeds === $this->max_checked_feeds)
			{
				break;
			}
			if (in_array(strtolower(strrchr($value, '.')), array('.rss', '.rdf', '.atom', '.xml')))
			{
				$this->checked_feeds++;
				$feed =& new $this->file_class($value, $this->timeout, 5, null, $this->useragent);
				if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
				{
					return $feed;
				}
				else
				{
					unset($array[$key]);
				}
			}
		}
		return null;
	}

	function body(&$array)
	{
		foreach ($array as $key => $value)
		{
			if ($this->checked_feeds === $this->max_checked_feeds)
			{
				break;
			}
			if (preg_match('/(rss|rdf|atom|xml)/i', $value))
			{
				$this->checked_feeds++;
				$feed =& new $this->file_class($value, $this->timeout, 5, null, $this->useragent);
				if ($feed->success && ($feed->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($feed->status_code === 200 || $feed->status_code > 206 && $feed->status_code < 300)) && $this->is_feed($feed))
				{
					return $feed;
				}
				else
				{
					unset($array[$key]);
				}
			}
		}
		return null;
	}
}

class SimplePie_Parser
{
	var $error_code;
	var $error_string;
	var $current_line;
	var $current_column;
	var $current_byte;
	var $separator = ' ';
	var $namespace = array('');
	var $element = array('');
	var $xml_base = array('');
	var $xml_base_explicit = array(false);
	var $xml_lang = array('');
	var $data = array();
	var $datas = array(array());
	var $current_xhtml_construct = -1;
	var $encoding;

	function parse(&$data, $encoding)
	{
		// Use UTF-8 if we get passed US-ASCII, as every US-ASCII character is a UTF-8 character
		if (strtoupper($encoding) === 'US-ASCII')
		{
			$this->encoding = 'UTF-8';
		}
		else
		{
			$this->encoding = $encoding;
		}

		// Strip BOM:
		// UTF-32 Big Endian BOM
		if (substr($data, 0, 4) === "\x00\x00\xFE\xFF")
		{
			$data = substr($data, 4);
		}
		// UTF-32 Little Endian BOM
		elseif (substr($data, 0, 4) === "\xFF\xFE\x00\x00")
		{
			$data = substr($data, 4);
		}
		// UTF-16 Big Endian BOM
		elseif (substr($data, 0, 2) === "\xFE\xFF")
		{
			$data = substr($data, 2);
		}
		// UTF-16 Little Endian BOM
		elseif (substr($data, 0, 2) === "\xFF\xFE")
		{
			$data = substr($data, 2);
		}
		// UTF-8 BOM
		elseif (substr($data, 0, 3) === "\xEF\xBB\xBF")
		{
			$data = substr($data, 3);
		}

		if (substr($data, 0, 5) === '<?xml' && strspn(substr($data, 5, 1), "\x09\x0A\x0D\x20") && ($pos = strpos($data, '?>')) !== false)
		{
			$declaration =& new SimplePie_XML_Declaration_Parser(substr($data, 5, $pos - 5));
			if ($declaration->parse())
			{
				$data = substr($data, $pos + 2);
				$data = '<?xml version="' . $declaration->version . '" encoding="' . $encoding . '" standalone="' . (($declaration->standalone) ? 'yes' : 'no') . '"?>' . $data;
			}
			else
			{
				$this->error_string = 'SimplePie bug! Please report this!';
				return false;
			}
		}

		$return = true;

		static $xml_is_sane = null;
		if ($xml_is_sane === null)
		{
			$parser_check = xml_parser_create();
			xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
			xml_parser_free($parser_check);
			$xml_is_sane = isset($values[0]['value']);
		}

		// Create the parser
		if ($xml_is_sane)
		{
			$xml = xml_parser_create_ns($this->encoding, $this->separator);
			xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1);
			xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0);
			xml_set_object($xml, $this);
			xml_set_character_data_handler($xml, 'cdata');
			xml_set_element_handler($xml, 'tag_open', 'tag_close');

			// Parse!
			if (!xml_parse($xml, $data, true))
			{
				$this->error_code = xml_get_error_code($xml);
				$this->error_string = xml_error_string($this->error_code);
				$return = false;
			}
			$this->current_line = xml_get_current_line_number($xml);
			$this->current_column = xml_get_current_column_number($xml);
			$this->current_byte = xml_get_current_byte_index($xml);
			xml_parser_free($xml);
			return $return;
		}
		else
		{
			libxml_clear_errors();
			$xml =& new XMLReader();
			$xml->xml($data);
			while (@$xml->read())
			{
				switch ($xml->nodeType)
				{

					case constant('XMLReader::END_ELEMENT'):
						if ($xml->namespaceURI !== '')
						{
							$tagName = "{$xml->namespaceURI}{$this->separator}{$xml->localName}";
						}
						else
						{
							$tagName = $xml->localName;
						}
						$this->tag_close(null, $tagName);
						break;
					case constant('XMLReader::ELEMENT'):
						$empty = $xml->isEmptyElement;
						if ($xml->namespaceURI !== '')
						{
							$tagName = "{$xml->namespaceURI}{$this->separator}{$xml->localName}";
						}
						else
						{
							$tagName = $xml->localName;
						}
						$attributes = array();
						while ($xml->moveToNextAttribute())
						{
							if ($xml->namespaceURI !== '')
							{
								$attrName = "{$xml->namespaceURI}{$this->separator}{$xml->localName}";
							}
							else
							{
								$attrName = $xml->localName;
							}
							$attributes[$attrName] = $xml->value;
						}
						$this->tag_open(null, $tagName, $attributes);
						if ($empty)
						{
							$this->tag_close(null, $tagName);
						}
						break;
					case constant('XMLReader::TEXT'):

					case constant('XMLReader::CDATA'):
						$this->cdata(null, $xml->value);
						break;
				}
			}
			if ($error = libxml_get_last_error())
			{
				$this->error_code = $error->code;
				$this->error_string = $error->message;
				$this->current_line = $error->line;
				$this->current_column = $error->column;
				return false;
			}
			else
			{
				return true;
			}
		}
	}

	function get_error_code()
	{
		return $this->error_code;
	}

	function get_error_string()
	{
		return $this->error_string;
	}

	function get_current_line()
	{
		return $this->current_line;
	}

	function get_current_column()
	{
		return $this->current_column;
	}

	function get_current_byte()
	{
		return $this->current_byte;
	}

	function get_data()
	{
		return $this->data;
	}

	function tag_open($parser, $tag, $attributes)
	{
		list($this->namespace[], $this->element[]) = $this->split_ns($tag);

		$attribs = array();
		foreach ($attributes as $name => $value)
		{
			list($attrib_namespace, $attribute) = $this->split_ns($name);
			$attribs[$attrib_namespace][$attribute] = $value;
		}

		if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['base']))
		{
			$this->xml_base[] = SimplePie_Misc::absolutize_url($attribs[SIMPLEPIE_NAMESPACE_XML]['base'], end($this->xml_base));
			$this->xml_base_explicit[] = true;
		}
		else
		{
			$this->xml_base[] = end($this->xml_base);
			$this->xml_base_explicit[] = end($this->xml_base_explicit);
		}

		if (isset($attribs[SIMPLEPIE_NAMESPACE_XML]['lang']))
		{
			$this->xml_lang[] = $attribs[SIMPLEPIE_NAMESPACE_XML]['lang'];
		}
		else
		{
			$this->xml_lang[] = end($this->xml_lang);
		}

		if ($this->current_xhtml_construct >= 0)
		{
			$this->current_xhtml_construct++;
			if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML)
			{
				$this->data['data'] .= '<' . end($this->element);
				if (isset($attribs['']))
				{
					foreach ($attribs[''] as $name => $value)
					{
						$this->data['data'] .= ' ' . $name . '="' . htmlspecialchars($value, ENT_COMPAT, $this->encoding) . '"';
					}
				}
				$this->data['data'] .= '>';
			}
		}
		else
		{
			$this->datas[] =& $this->data;
			$this->data =& $this->data['child'][end($this->namespace)][end($this->element)][];
			$this->data = array('data' => '', 'attribs' => $attribs, 'xml_base' => end($this->xml_base), 'xml_base_explicit' => end($this->xml_base_explicit), 'xml_lang' => end($this->xml_lang));
			if ((end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_03 && in_array(end($this->element), array('title', 'tagline', 'copyright', 'info', 'summary', 'content')) && isset($attribs['']['mode']) && $attribs['']['mode'] === 'xml')
			|| (end($this->namespace) === SIMPLEPIE_NAMESPACE_ATOM_10 && in_array(end($this->element), array('rights', 'subtitle', 'summary', 'info', 'title', 'content')) && isset($attribs['']['type']) && $attribs['']['type'] === 'xhtml'))
			{
				$this->current_xhtml_construct = 0;
			}
		}
	}

	function cdata($parser, $cdata)
	{
		if ($this->current_xhtml_construct >= 0)
		{
			$this->data['data'] .= htmlspecialchars($cdata, ENT_QUOTES, $this->encoding);
		}
		else
		{
			$this->data['data'] .= $cdata;
		}
	}

	function tag_close($parser, $tag)
	{
		if ($this->current_xhtml_construct >= 0)
		{
			$this->current_xhtml_construct--;
			if (end($this->namespace) === SIMPLEPIE_NAMESPACE_XHTML && !in_array(end($this->element), array('area', 'base', 'basefont', 'br', 'col', 'frame', 'hr', 'img', 'input', 'isindex', 'link', 'meta', 'param')))
			{
				$this->data['data'] .= '</' . end($this->element) . '>';
			}
		}
		if ($this->current_xhtml_construct === -1)
		{
			$this->data =& $this->datas[count($this->datas) - 1];
			array_pop($this->datas);
		}

		array_pop($this->element);
		array_pop($this->namespace);
		array_pop($this->xml_base);
		array_pop($this->xml_base_explicit);
		array_pop($this->xml_lang);
	}

	function split_ns($string)
	{
		static $cache = array();
		if (!isset($cache[$string]))
		{
			if ($pos = strpos($string, $this->separator))
			{
				static $separator_length;
				if (!$separator_length)
				{
					$separator_length = strlen($this->separator);
				}
				$namespace = substr($string, 0, $pos);
				$local_name = substr($string, $pos + $separator_length);
				if (strtolower($namespace) === SIMPLEPIE_NAMESPACE_ITUNES)
				{
					$namespace = SIMPLEPIE_NAMESPACE_ITUNES;
				}

				// Normalize the Media RSS namespaces
				if ($namespace === SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG)
				{
					$namespace = SIMPLEPIE_NAMESPACE_MEDIARSS;
				}
				$cache[$string] = array($namespace, $local_name);
			}
			else
			{
				$cache[$string] = array('', $string);
			}
		}
		return $cache[$string];
	}
}

/**
 * @todo Move to using an actual HTML parser (this will allow tags to be properly stripped, and to switch between HTML and XHTML), this will also make it easier to shorten a string while preserving HTML tags
 */
class SimplePie_Sanitize
{
	// Private vars
	var $base;

	// Options
	var $remove_div = true;
	var $image_handler = '';
	var $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');
	var $encode_instead_of_strip = false;
	var $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');
	var $strip_comments = false;
	var $output_encoding = 'UTF-8';
	var $enable_cache = true;
	var $cache_location = './cache';
	var $cache_name_function = 'md5';
	var $cache_class = 'SimplePie_Cache';
	var $file_class = 'SimplePie_File';
	var $timeout = 10;
	var $useragent = '';
	var $force_fsockopen = false;

	var $replace_url_attributes = array(
		'a' => 'href',
		'area' => 'href',
		'blockquote' => 'cite',
		'del' => 'cite',
		'form' => 'action',
		'img' => array('longdesc', 'src'),
		'input' => 'src',
		'ins' => 'cite',
		'q' => 'cite'
	);

	function remove_div($enable = true)
	{
		$this->remove_div = (bool) $enable;
	}

	function set_image_handler($page = false)
	{
		if ($page)
		{
			$this->image_handler = (string) $page;
		}
		else
		{
			$this->image_handler = false;
		}
	}

	function pass_cache_data($enable_cache = true, $cache_location = './cache', $cache_name_function = 'md5', $cache_class = 'SimplePie_Cache')
	{
		if (isset($enable_cache))
		{
			$this->enable_cache = (bool) $enable_cache;
		}

		if ($cache_location)
		{
			$this->cache_location = (string) $cache_location;
		}

		if ($cache_name_function)
		{
			$this->cache_name_function = (string) $cache_name_function;
		}

		if ($cache_class)
		{
			$this->cache_class = (string) $cache_class;
		}
	}

	function pass_file_data($file_class = 'SimplePie_File', $timeout = 10, $useragent = '', $force_fsockopen = false)
	{
		if ($file_class)
		{
			$this->file_class = (string) $file_class;
		}

		if ($timeout)
		{
			$this->timeout = (string) $timeout;
		}

		if ($useragent)
		{
			$this->useragent = (string) $useragent;
		}

		if ($force_fsockopen)
		{
			$this->force_fsockopen = (string) $force_fsockopen;
		}
	}

	function strip_htmltags($tags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style'))
	{
		if ($tags)
		{
			if (is_array($tags))
			{
				$this->strip_htmltags = $tags;
			}
			else
			{
				$this->strip_htmltags = explode(',', $tags);
			}
		}
		else
		{
			$this->strip_htmltags = false;
		}
	}

	function encode_instead_of_strip($encode = false)
	{
		$this->encode_instead_of_strip = (bool) $encode;
	}

	function strip_attributes($attribs = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc'))
	{
		if ($attribs)
		{
			if (is_array($attribs))
			{
				$this->strip_attributes = $attribs;
			}
			else
			{
				$this->strip_attributes = explode(',', $attribs);
			}
		}
		else
		{
			$this->strip_attributes = false;
		}
	}

	function strip_comments($strip = false)
	{
		$this->strip_comments = (bool) $strip;
	}

	function set_output_encoding($encoding = 'UTF-8')
	{
		$this->output_encoding = (string) $encoding;
	}

	/**
	 * Set element/attribute key/value pairs of HTML attributes
	 * containing URLs that need to be resolved relative to the feed
	 *
	 * @access public
	 * @since 1.0
	 * @param array $element_attribute Element/attribute key/value pairs
	 */
	function set_url_replacements($element_attribute = array('a' => 'href', 'area' => 'href', 'blockquote' => 'cite', 'del' => 'cite', 'form' => 'action', 'img' => array('longdesc', 'src'), 'input' => 'src', 'ins' => 'cite', 'q' => 'cite'))
	{
		$this->replace_url_attributes = (array) $element_attribute;
	}

	function sanitize($data, $type, $base = '')
	{
		$data = trim($data);
		if ($data !== '' || $type & SIMPLEPIE_CONSTRUCT_IRI)
		{
			if ($type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML)
			{
				if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data))
				{
					$type |= SIMPLEPIE_CONSTRUCT_HTML;
				}
				else
				{
					$type |= SIMPLEPIE_CONSTRUCT_TEXT;
				}
			}

			if ($type & SIMPLEPIE_CONSTRUCT_BASE64)
			{
				$data = base64_decode($data);
			}

			if ($type & SIMPLEPIE_CONSTRUCT_XHTML)
			{
				if ($this->remove_div)
				{
					$data = preg_replace('/^<div' . SIMPLEPIE_PCRE_XML_ATTRIBUTE . '>/', '', $data);
					$data = preg_replace('/<\/div>$/', '', $data);
				}
				else
				{
					$data = preg_replace('/^<div' . SIMPLEPIE_PCRE_XML_ATTRIBUTE . '>/', '<div>', $data);
				}
			}

			if ($type & (SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML))
			{
				// Strip comments
				if ($this->strip_comments)
				{
					$data = SimplePie_Misc::strip_comments($data);
				}

				// Strip out HTML tags and attributes that might cause various security problems.
				// Based on recommendations by Mark Pilgrim at:
				// http://diveintomark.org/archives/2003/06/12/how_to_consume_rss_safely
				if ($this->strip_htmltags)
				{
					foreach ($this->strip_htmltags as $tag)
					{
						$pcre = "/<($tag)" . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . "(>(.*)<\/$tag" . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>|(\/)?>)/siU';
						while (preg_match($pcre, $data))
						{
							$data = preg_replace_callback($pcre, array(&$this, 'do_strip_htmltags'), $data);
						}
					}
				}

				if ($this->strip_attributes)
				{
					foreach ($this->strip_attributes as $attrib)
					{
						$data = preg_replace('/(<[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*)' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . trim($attrib) . '(?:\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>/', '\1\2\3>', $data);
					}
				}

				// Replace relative URLs
				$this->base = $base;
				foreach ($this->replace_url_attributes as $element => $attributes)
				{
					$data = $this->replace_urls($data, $element, $attributes);
				}

				// If image handling (caching, etc.) is enabled, cache and rewrite all the image tags.
				if (isset($this->image_handler) && ((string) $this->image_handler) !== '' && $this->enable_cache)
				{
					$images = SimplePie_Misc::get_element('img', $data);
					foreach ($images as $img)
					{
						if (isset($img['attribs']['src']['data']))
						{
							$image_url = call_user_func($this->cache_name_function, $img['attribs']['src']['data']);
							$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, $image_url, 'spi');

							if ($cache->load())
							{
								$img['attribs']['src']['data'] = $this->image_handler . $image_url;
								$data = str_replace($img['full'], SimplePie_Misc::element_implode($img), $data);
							}
							else
							{
								$file =& new $this->file_class($img['attribs']['src']['data'], $this->timeout, 5, array('X-FORWARDED-FOR' => $_SERVER['REMOTE_ADDR']), $this->useragent, $this->force_fsockopen);
								$headers = $file->headers;

								if ($file->success && ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
								{
									if ($cache->save(array('headers' => $file->headers, 'body' => $file->body)))
									{
										$img['attribs']['src']['data'] = $this->image_handler . $image_url;
										$data = str_replace($img['full'], SimplePie_Misc::element_implode($img), $data);
									}
									else
									{
										trigger_error("$this->cache_location is not writeable", E_USER_WARNING);
									}
								}
							}
						}
					}
				}

				// Having (possibly) taken stuff out, there may now be whitespace at the beginning/end of the data
				$data = trim($data);
			}

			if ($type & SIMPLEPIE_CONSTRUCT_IRI)
			{
				$data = SimplePie_Misc::absolutize_url($data, $base);
			}

			if ($type & (SIMPLEPIE_CONSTRUCT_TEXT | SIMPLEPIE_CONSTRUCT_IRI))
			{
				$data = htmlspecialchars($data, ENT_COMPAT, 'UTF-8');
			}

			if ($this->output_encoding !== 'UTF-8')
			{
				$data = SimplePie_Misc::change_encoding($data, 'UTF-8', $this->output_encoding);
			}
		}
		return $data;
	}

	function replace_urls($data, $tag, $attributes)
	{
		if (!is_array($this->strip_htmltags) || !in_array($tag, $this->strip_htmltags))
		{
			$elements = SimplePie_Misc::get_element($tag, $data);
			foreach ($elements as $element)
			{
				if (is_array($attributes))
				{
					foreach ($attributes as $attribute)
					{
						if (isset($element['attribs'][$attribute]['data']))
						{
							$element['attribs'][$attribute]['data'] = SimplePie_Misc::absolutize_url($element['attribs'][$attribute]['data'], $this->base);
							$new_element = SimplePie_Misc::element_implode($element);
							$data = str_replace($element['full'], $new_element, $data);
							$element['full'] = $new_element;
						}
					}
				}
				elseif (isset($element['attribs'][$attributes]['data']))
				{
					$element['attribs'][$attributes]['data'] = SimplePie_Misc::absolutize_url($element['attribs'][$attributes]['data'], $this->base);
					$data = str_replace($element['full'], SimplePie_Misc::element_implode($element), $data);
				}
			}
		}
		return $data;
	}

	function do_strip_htmltags($match)
	{
		if ($this->encode_instead_of_strip)
		{
			if (isset($match[4]) && !in_array(strtolower($match[1]), array('script', 'style')))
			{
				$match[1] = htmlspecialchars($match[1], ENT_COMPAT, 'UTF-8');
				$match[2] = htmlspecialchars($match[2], ENT_COMPAT, 'UTF-8');
				return "&lt;$match[1]$match[2]&gt;$match[3]&lt;/$match[1]&gt;";
			}
			else
			{
				return htmlspecialchars($match[0], ENT_COMPAT, 'UTF-8');
			}
		}
		elseif (isset($match[4]) && !in_array(strtolower($match[1]), array('script', 'style')))
		{
			return $match[4];
		}
		else
		{
			return '';
		}
	}
}
endif;
?>