WordPress/wp-includes/functions.php

<?php

function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) {
	global $wp_locale;
	$m = $mysqlstring;
	if ( empty( $m ) )
		return false;
		
	if( 'G' == $dateformatstring ) {
		return gmmktime(
			(int) substr( $m, 11, 2 ), (int) substr( $m, 14, 2 ), (int) substr( $m, 17, 2 ),
			(int) substr( $m, 5, 2 ), (int) substr( $m, 8, 2 ), (int) substr( $m, 0, 4 )
		);
	}
	
	$i = mktime(
		(int) substr( $m, 11, 2 ), (int) substr( $m, 14, 2 ), (int) substr( $m, 17, 2 ),
		(int) substr( $m, 5, 2 ), (int) substr( $m, 8, 2 ), (int) substr( $m, 0, 4 )
	);

	if( 'U' == $dateformatstring )
		return $i;

	if ( -1 == $i || false == $i )
		$i = 0;

	if ( !empty( $wp_locale->month ) && !empty( $wp_locale->weekday ) && $translate ) {
		$datemonth = $wp_locale->get_month( date( 'm', $i ) );
		$datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
		$dateweekday = $wp_locale->get_weekday( date( 'w', $i ) );
		$dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
		$datemeridiem = $wp_locale->get_meridiem( date( 'a', $i ) );
		$datemeridiem_capital = $wp_locale->get_meridiem( date( 'A', $i ) );
		$dateformatstring = ' ' . $dateformatstring;
		$dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );

		$dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
	}
	$j = @date( $dateformatstring, $i );

	/*
	if ( !$j ) // for debug purposes
		echo $i." ".$mysqlstring;
	*/

	return $j;
}


function current_time( $type, $gmt = 0 ) {
	switch ( $type ) {
		case 'mysql':
			return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
			break;
		case 'timestamp':
			return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
			break;
	}
}


function date_i18n( $dateformatstring, $unixtimestamp ) {
	global $wp_locale;
	$i = $unixtimestamp;
	if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
		$datemonth = $wp_locale->get_month( date( 'm', $i ) );
		$datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
		$dateweekday = $wp_locale->get_weekday( date( 'w', $i ) );
		$dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
		$datemeridiem = $wp_locale->get_meridiem( date( 'a', $i ) );
		$datemeridiem_capital = $wp_locale->get_meridiem( date( 'A', $i ) );
		$dateformatstring = ' '.$dateformatstring;
		$dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
		$dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );

		$dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
	}
	$j = @date( $dateformatstring, $i );
	return $j;
}


function number_format_i18n( $number, $decimals = null ) {
	global $wp_locale;
	// let the user override the precision only
	$decimals = ( is_null( $decimals ) ) ? $wp_locale->number_format['decimals'] : intval( $decimals );

	return number_format( $number, $decimals, $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
}


function size_format( $bytes, $decimals = null ) {
	// technically the correct unit names for powers of 1024 are KiB, MiB etc
	// see http://en.wikipedia.org/wiki/Byte
	$quant = array(
		// ========================= Origin ====
		'TB' => 1099511627776,  // pow( 1024, 4)
		'GB' => 1073741824,     // pow( 1024, 3)
		'MB' => 1048576,        // pow( 1024, 2)
		'kB' => 1024,           // pow( 1024, 1)
		'B ' => 1,              // pow( 1024, 0)
	);

	foreach ( $quant as $unit => $mag )
		if ( doubleval($bytes) >= $mag )
			return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;

	return false;
}


function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
	$my = substr( $mysqlstring, 0, 4 );
	$mm = substr( $mysqlstring, 8, 2 );
	$md = substr( $mysqlstring, 5, 2 );
	$day = mktime( 0, 0, 0, $md, $mm, $my );
	$weekday = date( 'w', $day );
	$i = 86400;
	if( !is_numeric($start_of_week) )
		$start_of_week = get_option( 'start_of_week' );

	if ( $weekday < $start_of_week )
		$weekday = 7 - $start_of_week - $weekday;

	while ( $weekday > $start_of_week ) {
		$weekday = date( 'w', $day );
		if ( $weekday < $start_of_week )
			$weekday = 7 - $start_of_week - $weekday;

		$day -= 86400;
		$i = 0;
	}
	$week['start'] = $day + 86400 - $i;
	$week['end'] = $week['start'] + 604799;
	return $week;
}


function maybe_unserialize( $original ) {
	if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
		if ( false !== $gm = @unserialize( $original ) )
			return $gm;
	return $original;
}


function is_serialized( $data ) {
	// if it isn't a string, it isn't serialized
	if ( !is_string( $data ) )
		return false;
	$data = trim( $data );
	if ( 'N;' == $data )
		return true;
	if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
		return false;
	switch ( $badions[1] ) {
		case 'a' :
		case 'O' :
		case 's' :
			if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
				return true;
			break;
		case 'b' :
		case 'i' :
		case 'd' :
			if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
				return true;
			break;
	}
	return false;
}


function is_serialized_string( $data ) {
	// if it isn't a string, it isn't a serialized string
	if ( !is_string( $data ) )
		return false;
	$data = trim( $data );
	if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings
		return true;
	return false;
}


/* Options functions */

// expects $setting to already be SQL-escaped
function get_option( $setting ) {
	global $wpdb;

	// Allow plugins to short-circuit options.
	$pre = apply_filters( 'pre_option_' . $setting, false );
	if ( false !== $pre )
		return $pre;

	// prevent non-existent options from triggering multiple queries
	$notoptions = wp_cache_get( 'notoptions', 'options' );
	if ( isset( $notoptions[$setting] ) )
		return false;

	$alloptions = wp_load_alloptions();

	if ( isset( $alloptions[$setting] ) ) {
		$value = $alloptions[$setting];
	} else {
		$value = wp_cache_get( $setting, 'options' );

		if ( false === $value ) {
			if ( defined( 'WP_INSTALLING' ) )
				$show = $wpdb->hide_errors();
			// expected_slashed ($setting)
			$row = $wpdb->get_row( "SELECT option_value FROM $wpdb->options WHERE option_name = '$setting' LIMIT 1" );
			if ( defined( 'WP_INSTALLING' ) )
				$wpdb->show_errors($show);

			if ( is_object( $row) ) { // Has to be get_row instead of get_var because of funkiness with 0, false, null values
				$value = $row->option_value;
				wp_cache_add( $setting, $value, 'options' );
			} else { // option does not exist, so we must cache its non-existence
				$notoptions[$setting] = true;
				wp_cache_set( 'notoptions', $notoptions, 'options' );
				return false;
			}
		}
	}

	// If home is not set use siteurl.
	if ( 'home' == $setting && '' == $value )
		return get_option( 'siteurl' );

	if ( in_array( $setting, array('siteurl', 'home', 'category_base', 'tag_base') ) )
		$value = untrailingslashit( $value );

	return apply_filters( 'option_' . $setting, maybe_unserialize( $value ) );
}


function wp_protect_special_option( $option ) {
	$protected = array( 'alloptions', 'notoptions' );
	if ( in_array( $option, $protected ) )
		die( sprintf( __( '%s is a protected WP option and may not be modified' ), wp_specialchars( $option ) ) );
}

function form_option( $option ) {
	echo attribute_escape (get_option( $option ) );
}

function get_alloptions() {
	global $wpdb, $wp_queries;
	$show = $wpdb->hide_errors();
	if ( !$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
		$options = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
	$wpdb->show_errors($show);

	foreach ( $options as $option ) {
		// "When trying to design a foolproof system,
		//  never underestimate the ingenuity of the fools :)" -- Dougal
		if ( in_array( $option->option_name, array( 'siteurl', 'home', 'category_base' ) ) )
			$option->option_value = untrailingslashit( $option->option_value );
		$value = maybe_unserialize( $option->option_value );
		$all_options->{$option->option_name} = apply_filters( 'pre_option_' . $option->option_name, $value );
	}
	return apply_filters( 'all_options', $all_options );
}


function wp_load_alloptions() {
	global $wpdb;

	$alloptions = wp_cache_get( 'alloptions', 'options' );

	if ( !$alloptions ) {
		$show = $wpdb->hide_errors();
		if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
			$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
		$wpdb->show_errors($show);
		$alloptions = array();
		foreach ( (array) $alloptions_db as $o )
			$alloptions[$o->option_name] = $o->option_value;
		wp_cache_add( 'alloptions', $alloptions, 'options' );
	}
	return $alloptions;
}


// expects $option_name to NOT be SQL-escaped
function update_option( $option_name, $newvalue ) {
	global $wpdb;

	wp_protect_special_option( $option_name );

	$safe_option_name = $wpdb->escape( $option_name );
	$newvalue = sanitize_option( $option_name, $newvalue );

	// If the new and old values are the same, no need to update.
	$oldvalue = get_option( $safe_option_name );
	if ( $newvalue === $oldvalue )
		return false;

	if ( false === $oldvalue ) {
		add_option( $option_name, $newvalue );
		return true;
	}

	$notoptions = wp_cache_get( 'notoptions', 'options' );
	if ( is_array( $notoptions ) && isset( $notoptions[$option_name] ) ) {
		unset( $notoptions[$option_name] );
		wp_cache_set( 'notoptions', $notoptions, 'options' );
	}

	$_newvalue = $newvalue;
	$newvalue = maybe_serialize( $newvalue );

	$alloptions = wp_load_alloptions();
	if ( isset( $alloptions[$option_name] ) ) {
		$alloptions[$option_name] = $newvalue;
		wp_cache_set( 'alloptions', $alloptions, 'options' );
	} else {
		wp_cache_set( $option_name, $newvalue, 'options' );
	}

	$wpdb->query( $wpdb->prepare( "UPDATE $wpdb->options SET option_value = %s WHERE option_name = %s", $newvalue, $option_name ) );
	if ( $wpdb->rows_affected == 1 ) {
		do_action( "update_option_{$option_name}", $oldvalue, $_newvalue );
		return true;
	}
	return false;
}


// thx Alex Stapleton, http://alex.vort-x.net/blog/
// expects $name to NOT be SQL-escaped
function add_option( $name, $value = '', $deprecated = '', $autoload = 'yes' ) {
	global $wpdb;

	wp_protect_special_option( $name );
	$safe_name = $wpdb->escape( $name );

	// Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
	$notoptions = wp_cache_get( 'notoptions', 'options' );
	if ( !is_array( $notoptions ) || !isset( $notoptions[$name] ) )
		if ( false !== get_option( $safe_name ) )
			return;

	$value = maybe_serialize( $value );
	$autoload = ( 'no' === $autoload ) ? 'no' : 'yes';

	if ( 'yes' == $autoload ) {
		$alloptions = wp_load_alloptions();
		$alloptions[$name] = $value;
		wp_cache_set( 'alloptions', $alloptions, 'options' );
	} else {
		wp_cache_set( $name, $value, 'options' );
	}

	// This option exists now
	$notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh
	if ( is_array( $notoptions ) && isset( $notoptions[$name] ) ) {
		unset( $notoptions[$name] );
		wp_cache_set( 'notoptions', $notoptions, 'options' );
	}

	$wpdb->query( $wpdb->prepare( "INSERT INTO $wpdb->options (option_name, option_value, autoload) VALUES (%s, %s, %s)", $name, $value, $autoload ) );

	return;
}


function delete_option( $name ) {
	global $wpdb;

	wp_protect_special_option( $name );

	// Get the ID, if no ID then return
	// expected_slashed ($name)
	$option = $wpdb->get_row( "SELECT option_id, autoload FROM $wpdb->options WHERE option_name = '$name'" );
	if ( is_null($option) || !$option->option_id )
		return false;
	// expected_slashed ($name)
	$wpdb->query( "DELETE FROM $wpdb->options WHERE option_name = '$name'" );
	if ( 'yes' == $option->autoload ) {
		$alloptions = wp_load_alloptions();
		if ( isset( $alloptions[$name] ) ) {
			unset( $alloptions[$name] );
			wp_cache_set( 'alloptions', $alloptions, 'options' );
		}
	} else {
		wp_cache_delete( $name, 'options' );
	}
	return true;
}


function maybe_serialize( $data ) {
	if ( is_string( $data ) )
		$data = trim( $data );
	elseif ( is_array( $data ) || is_object( $data ) )
		return serialize( $data );
	if ( is_serialized( $data ) )
		return serialize( $data );
	return $data;
}


function make_url_footnote( $content ) {
	preg_match_all( '/<a(.+?)href=\"(.+?)\"(.*?)>(.+?)<\/a>/', $content, $matches );
	$j = 0;
	for ( $i=0; $i<count($matches[0]); $i++ ) {
		$links_summary = ( !$j ) ? "\n" : $links_summary;
		$j++;
		$link_match = $matches[0][$i];
		$link_number = '['.($i+1).']';
		$link_url = $matches[2][$i];
		$link_text = $matches[4][$i];
		$content = str_replace( $link_match, $link_text . ' ' . $link_number, $content );
		$link_url = ( ( strtolower( substr( $link_url, 0, 7 ) ) != 'http://' ) && ( strtolower( substr( $link_url, 0, 8 ) ) != 'https://' ) ) ? get_option( 'home' ) . $link_url : $link_url;
		$links_summary .= "\n" . $link_number . ' ' . $link_url;
	}
	$content  = strip_tags( $content );
	$content .= $links_summary;
	return $content;
}


function xmlrpc_getposttitle( $content ) {
	global $post_default_title;
	if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
		$post_title = $matchtitle[0];
		$post_title = preg_replace( '/<title>/si', '', $post_title );
		$post_title = preg_replace( '/<\/title>/si', '', $post_title );
	} else {
		$post_title = $post_default_title;
	}
	return $post_title;
}


function xmlrpc_getpostcategory( $content ) {
	global $post_default_category;
	if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
		$post_category = trim( $matchcat[1], ',' );
		$post_category = explode( ',', $post_category );
	} else {
		$post_category = $post_default_category;
	}
	return $post_category;
}


function xmlrpc_removepostdata( $content ) {
	$content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
	$content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
	$content = trim( $content );
	return $content;
}


function debug_fopen( $filename, $mode ) {
	global $debug;
	if ( 1 == $debug ) {
		$fp = fopen( $filename, $mode );
		return $fp;
	} else {
		return false;
	}
}


function debug_fwrite( $fp, $string ) {
	global $debug;
	if ( 1 == $debug )
		fwrite( $fp, $string );
}


function debug_fclose( $fp ) {
	global $debug;
	if ( 1 == $debug )
		fclose( $fp );
}

function do_enclose( $content, $post_ID ) {
	global $wpdb;
	include_once( ABSPATH . WPINC . '/class-IXR.php' );

	$log = debug_fopen( ABSPATH . 'enclosures.log', 'a' );
	$post_links = array();
	debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" );

	$pung = get_enclosed( $post_ID );

	$ltrs = '\w';
	$gunk = '/#~:.?+=&%@!\-';
	$punc = '.:?\-';
	$any = $ltrs . $gunk . $punc;

	preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp );

	debug_fwrite( $log, 'Post contents:' );
	debug_fwrite( $log, $content . "\n" );

	foreach ( $post_links_temp[0] as $link_test ) {
		if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
			$test = parse_url( $link_test );
			if ( isset( $test['query'] ) )
				$post_links[] = $link_test;
			elseif ( $test['path'] != '/' && $test['path'] != '' )
				$post_links[] = $link_test;
		}
	}

	foreach ( $post_links as $url ) {
		if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, $url . '%' ) ) ) {
			if ( $headers = wp_get_http_headers( $url) ) {
				$len = (int) $headers['content-length'];
				$type = $wpdb->escape( $headers['content-type'] );
				$allowed_types = array( 'video', 'audio' );
				if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
					$meta_value = "$url\n$len\n$type\n";
					$wpdb->query( $wpdb->prepare( "INSERT INTO `$wpdb->postmeta` ( `post_id` , `meta_key` , `meta_value` )
					VALUES ( %d, 'enclosure' , %s)", $post_ID, $meta_value ) );
				}
			}
		}
	}
}

// perform a HTTP HEAD or GET request
// if $file_path is a writable filename, this will do a GET request and write the file to that path
// returns a list of HTTP headers
function wp_get_http( $url, $file_path = false, $red = 1 ) {
	global $wp_version;
	@set_time_limit( 60 );

	if ( $red > 5 )
		 return false;

	$parts = parse_url( $url );
	$file = $parts['path'] . ( ( $parts['query'] ) ? '?' . $parts['query'] : '' );
	$host = $parts['host'];
	if ( !isset( $parts['port'] ) )
		$parts['port'] = 80;

	if ( $file_path )
		$request_type = 'GET';
	else
		$request_type = 'HEAD';

	$head = "$request_type $file HTTP/1.1\r\nHOST: $host\r\nUser-Agent: WordPress/" . $wp_version . "\r\n\r\n";

	$fp = @fsockopen( $host, $parts['port'], $err_num, $err_msg, 3 );
	if ( !$fp )
		return false;

	$response = '';
	fputs( $fp, $head );
	while ( !feof( $fp ) && strpos( $response, "\r\n\r\n" ) == false )
		$response .= fgets( $fp, 2048 );
	preg_match_all( '/(.*?): (.*)\r/', $response, $matches );
	$count = count( $matches[1] );
	for ( $i = 0; $i < $count; $i++ ) {
		$key = strtolower( $matches[1][$i] );
		$headers["$key"] = $matches[2][$i];
	}

	preg_match( '/.*([0-9]{3}).*/', $response, $return );
	$headers['response'] = $return[1]; // HTTP response code eg 204, 200, 404

		$code = $headers['response'];
		if ( ( '302' == $code || '301' == $code ) && isset( $headers['location'] ) ) {
				fclose($fp);
				return wp_get_http( $headers['location'], $file_path, ++$red );
		}

	// make a note of the final location, so the caller can tell if we were redirected or not
	$headers['x-final-location'] = $url;

	// HEAD request only
	if ( !$file_path ) {
		fclose($fp);
		return $headers;
	}

	// GET request - fetch and write it to the supplied filename
	$content_length = $headers['content-length'];
	$got_bytes = 0;
	$out_fp = fopen($file_path, 'w');
	while ( !feof($fp) ) {
		$buf = fread( $fp, 4096 );
		fwrite( $out_fp, $buf );
		$got_bytes += strlen($buf);
		// don't read past the content-length
		if ($content_length and $got_bytes >= $content_length)
			break;
	}

	fclose($out_fp);
	fclose($fp);
	return $headers;
}

function wp_get_http_headers( $url, $red = 1 ) {
	return wp_get_http( $url, false, $red );
}


function is_new_day() {
	global $day, $previousday;
	if ( $day != $previousday )
		return 1;
	else
		return 0;
}


function build_query( $data ) {
	return _http_build_query( $data, NULL, '&', '', false );
}


/*
add_query_arg: Returns a modified querystring by adding
a single key & value or an associative array.
Setting a key value to emptystring removes the key.
Omitting oldquery_or_uri uses the $_SERVER value.

Parameters:
add_query_arg(newkey, newvalue, oldquery_or_uri) or
add_query_arg(associative_array, oldquery_or_uri)
*/
function add_query_arg() {
	$ret = '';
	if ( is_array( func_get_arg(0) ) ) {
		if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
			$uri = $_SERVER['REQUEST_URI'];
		else
			$uri = @func_get_arg( 1 );
	} else {
		if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
			$uri = $_SERVER['REQUEST_URI'];
		else
			$uri = @func_get_arg( 2 );
	}

	if ( $frag = strstr( $uri, '#' ) )
		$uri = substr( $uri, 0, -strlen( $frag ) );
	else
		$frag = '';

	if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
		$protocol = $matches[0];
		$uri = substr( $uri, strlen( $protocol ) );
	} else {
		$protocol = '';
	}

	if ( strpos( $uri, '?' ) !== false ) {
		$parts = explode( '?', $uri, 2 );
		if ( 1 == count( $parts ) ) {
			$base = '?';
			$query = $parts[0];
		} else {
			$base = $parts[0] . '?';
			$query = $parts[1];
		}
	} elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
		$base = $uri . '?';
		$query = '';
	} else {
		$base = '';
		$query = $uri;
	}

	wp_parse_str( $query, $qs );
	$qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
	if ( is_array( func_get_arg( 0 ) ) ) {
		$kayvees = func_get_arg( 0 );
		$qs = array_merge( $qs, $kayvees );
	} else {
		$qs[func_get_arg( 0 )] = func_get_arg( 1 );
	}

	foreach ( $qs as $k => $v ) {
		if ( $v === false )
			unset( $qs[$k] );
	}

	$ret = build_query( $qs );
	$ret = trim( $ret, '?' );
	$ret = preg_replace( '#=(&|$)#', '$1', $ret );
	$ret = $protocol . $base . $ret . $frag;
	$ret = rtrim( $ret, '?' );
	return $ret;
}


/*
remove_query_arg: Returns a modified querystring by removing
a single key or an array of keys.
Omitting oldquery_or_uri uses the $_SERVER value.

Parameters:
remove_query_arg(removekey, [oldquery_or_uri]) or
remove_query_arg(removekeyarray, [oldquery_or_uri])
*/

function remove_query_arg( $key, $query=FALSE ) {
	if ( is_array( $key ) ) { // removing multiple keys
		foreach ( (array) $key as $k )
			$query = add_query_arg( $k, FALSE, $query );
		return $query;
	}
	return add_query_arg( $key, FALSE, $query );
}


function add_magic_quotes( $array ) {
	global $wpdb;

	foreach ( $array as $k => $v ) {
		if ( is_array( $v ) ) {
			$array[$k] = add_magic_quotes( $v );
		} else {
			$array[$k] = $wpdb->escape( $v );
		}
	}
	return $array;
}

function wp_remote_fopen( $uri ) {
	$timeout = 10;
	$parsed_url = @parse_url( $uri );

	if ( !$parsed_url || !is_array( $parsed_url ) )
		return false;

	if ( !isset( $parsed_url['scheme'] ) || !in_array( $parsed_url['scheme'], array( 'http','https' ) ) )
		$uri = 'http://' . $uri;

	if ( ini_get( 'allow_url_fopen' ) ) {
		$fp = @fopen( $uri, 'r' );
		if ( !$fp )
			return false;

		//stream_set_timeout($fp, $timeout); // Requires php 4.3
		$linea = '';
		while ( $remote_read = fread( $fp, 4096 ) )
			$linea .= $remote_read;
		fclose( $fp );
		return $linea;
	} elseif ( function_exists( 'curl_init' ) ) {
		$handle = curl_init();
		curl_setopt( $handle, CURLOPT_URL, $uri);
		curl_setopt( $handle, CURLOPT_CONNECTTIMEOUT, 1 );
		curl_setopt( $handle, CURLOPT_RETURNTRANSFER, 1 );
		curl_setopt( $handle, CURLOPT_TIMEOUT, $timeout );
		$buffer = curl_exec( $handle );
		curl_close( $handle );
		return $buffer;
	} else {
		return false;
	}
}


function wp( $query_vars = '' ) {
	global $wp, $wp_query, $wp_the_query;
	$wp->main( $query_vars );

	if( !isset($wp_the_query) )
		$wp_the_query = $wp_query;
}


function get_status_header_desc( $code ) {
	global $wp_header_to_desc;

	$code = absint( $code );

	if ( !isset( $wp_header_to_desc ) ) {
		$wp_header_to_desc = array(
			100 => 'Continue',
			101 => 'Switching Protocols',

			200 => 'OK',
			201 => 'Created',
			202 => 'Accepted',
			203 => 'Non-Authoritative Information',
			204 => 'No Content',
			205 => 'Reset Content',
			206 => 'Partial Content',

			300 => 'Multiple Choices',
			301 => 'Moved Permanently',
			302 => 'Found',
			303 => 'See Other',
			304 => 'Not Modified',
			305 => 'Use Proxy',
			307 => 'Temporary Redirect',

			400 => 'Bad Request',
			401 => 'Unauthorized',
			403 => 'Forbidden',
			404 => 'Not Found',
			405 => 'Method Not Allowed',
			406 => 'Not Acceptable',
			407 => 'Proxy Authentication Required',
			408 => 'Request Timeout',
			409 => 'Conflict',
			410 => 'Gone',
			411 => 'Length Required',
			412 => 'Precondition Failed',
			413 => 'Request Entity Too Large',
			414 => 'Request-URI Too Long',
			415 => 'Unsupported Media Type',
			416 => 'Requested Range Not Satisfiable',
			417 => 'Expectation Failed',

			500 => 'Internal Server Error',
			501 => 'Not Implemented',
			502 => 'Bad Gateway',
			503 => 'Service Unavailable',
			504 => 'Gateway Timeout',
			505 => 'HTTP Version Not Supported'
		);
	}

	if ( isset( $wp_header_to_desc[$code] ) )
		return $wp_header_to_desc[$code];
	else
		return '';
}


function status_header( $header ) {
	$text = get_status_header_desc( $header );

	if ( empty( $text ) )
		return false;

	$protocol = $_SERVER["SERVER_PROTOCOL"];
	if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
		$protocol = 'HTTP/1.0';
	$status_header = "$protocol $header $text";
	if ( function_exists( 'apply_filters' ) )
		$status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol );

	if ( version_compare( phpversion(), '4.3.0', '>=' ) )
		return @header( $status_header, true, $header );
	else
		return @header( $status_header );
}


function nocache_headers() {
	// why are these @-silenced when other header calls aren't?
	@header( 'Expires: Wed, 11 Jan 1984 05:00:00 GMT' );
	@header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' );
	@header( 'Cache-Control: no-cache, must-revalidate, max-age=0' );
	@header( 'Pragma: no-cache' );
}


function cache_javascript_headers() {
	$expiresOffset = 864000; // 10 days
	header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
	header( "Vary: Accept-Encoding" ); // Handle proxies
	header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
}


function get_num_queries() {
	global $wpdb;
	return $wpdb->num_queries;
}


function bool_from_yn( $yn ) {
	return ( strtolower( $yn ) == 'y' );
}


function do_feed() {
	global $wp_query;

	$feed = get_query_var( 'feed' );

	// Remove the pad, if present.
	$feed = preg_replace( '/^_+/', '', $feed );

	if ( $feed == '' || $feed == 'feed' )
		$feed = get_default_feed();

	$hook = 'do_feed_' . $feed;
	if ( !has_action($hook) ) {
		$message = sprintf( __( 'ERROR: %s is not a valid feed template' ), wp_specialchars($feed));
		wp_die($message);
	}

	do_action( $hook, $wp_query->is_comment_feed ); 
}


function do_feed_rdf() {
	load_template( ABSPATH . WPINC . '/feed-rdf.php' );
}


function do_feed_rss() {
	load_template( ABSPATH . WPINC . '/feed-rss.php' );
}


function do_feed_rss2( $for_comments ) {
	if ( $for_comments )
		load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
	else
		load_template( ABSPATH . WPINC . '/feed-rss2.php' );
}


function do_feed_atom( $for_comments ) {
	if ($for_comments)
		load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
	else
		load_template( ABSPATH . WPINC . '/feed-atom.php' );
}

function do_robots() {
	header( 'Content-Type: text/plain; charset=utf-8' );

	do_action( 'do_robotstxt' );

	if ( '0' == get_option( 'blog_public' ) ) {
		echo "User-agent: *\n";
		echo "Disallow: /\n";
	} else {
		echo "User-agent: *\n";
		echo "Disallow:\n";
	}
}


function is_blog_installed() {
	global $wpdb;

	// Check cache first.  If options table goes away and we have true cached, oh well.
	if ( wp_cache_get('is_blog_installed') )
		return true;

	$show = $wpdb->hide_errors();
	$installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
	$wpdb->show_errors($show);

	$installed = !empty( $installed ) ? true : false;
	wp_cache_set('is_blog_installed', $installed);

	return $installed;
}


function wp_nonce_url( $actionurl, $action = -1 ) {
	$actionurl = str_replace( '&amp;', '&', $actionurl );
	return wp_specialchars( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) );
}


function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true ) {
	$name = attribute_escape( $name );
	echo '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
	if ( $referer )
		wp_referer_field();
}


function wp_referer_field() {
	$ref = attribute_escape( $_SERVER['REQUEST_URI'] );
	echo '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />';
	if ( wp_get_original_referer() ) {
		$original_ref = attribute_escape( stripslashes( wp_get_original_referer() ) );
		echo '<input type="hidden" name="_wp_original_http_referer" value="'. $original_ref . '" />';
	}
}


function wp_original_referer_field() {
	echo '<input type="hidden" name="_wp_original_http_referer" value="' . attribute_escape( stripslashes( $_SERVER['REQUEST_URI'] ) ) . '" />';
}


function wp_get_referer() {
	if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
		return $_REQUEST['_wp_http_referer'];
	else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )
		return $_SERVER['HTTP_REFERER'];
	return false;
}


function wp_get_original_referer() {
	if ( !empty( $_REQUEST['_wp_original_http_referer'] ) )
		return $_REQUEST['_wp_original_http_referer'];
	return false;
}


function wp_mkdir_p( $target ) {
	// from php.net/mkdir user contributed notes
	if ( file_exists( $target ) )
		return @is_dir( $target );

	// Attempting to create the directory may clutter up our display.
	if ( @mkdir( $target ) ) {
		$stat = @stat( dirname( $target ) );
		$dir_perms = $stat['mode'] & 0007777;  // Get the permission bits.
		@chmod( $target, $dir_perms );
		return true;
	} elseif ( is_dir( dirname( $target ) ) ) {
			return false;
	}

	// If the above failed, attempt to create the parent node, then try again.
	if ( wp_mkdir_p( dirname( $target ) ) )
		return wp_mkdir_p( $target );

	return false;
}

// Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows')
function path_is_absolute( $path ) {
	// this is definitive if true but fails if $path does not exist or contains a symbolic link
	if ( realpath($path) == $path )
		return true;

	if ( strlen($path) == 0 || $path{0} == '.' )
		return false;
	
	// windows allows absolute paths like this
	if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
		return true;

	// a path starting with / or \ is absolute; anything else is relative
	return (bool) preg_match('#^[/\\\\]#', $path);
}

// Join two filesystem paths together (e.g. 'give me $path relative to $base')
function path_join( $base, $path ) {
	if ( path_is_absolute($path) )
		return $path;
	
	return rtrim($base, '/') . '/' . ltrim($path, '/');
}

// Returns an array containing the current upload directory's path and url, or an error message.
function wp_upload_dir( $time = NULL ) {
	$siteurl = get_option( 'siteurl' );
	$upload_path = $dir = get_option( 'upload_path' );
	
	// $dir is absolute, $path is (maybe) relative to ABSPATH
	$dir = path_join( ABSPATH, $upload_path );
	$path = str_replace( ABSPATH, '', trim( $upload_path ) );

	if ( !$url = get_option( 'upload_url_path' ) )
		$url = trailingslashit( $siteurl ) . $path;

	if ( $dir == ABSPATH ) // the option was empty
		$dir = ABSPATH . 'wp-content/uploads';

	if ( defined('UPLOADS') ) {
		$dir = ABSPATH . UPLOADS;
		$url = trailingslashit( $siteurl ) . UPLOADS;
	}

	$subdir = '';
	if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
		// Generate the yearly and monthly dirs
		if ( !$time )
			$time = current_time( 'mysql' );
		$y = substr( $time, 0, 4 );
		$m = substr( $time, 5, 2 );
		$subdir = "/$y/$m";
	}
	
	$dir .= $subdir;
	$url .= $subdir;

	// Make sure we have an uploads dir
	if ( ! wp_mkdir_p( $dir ) ) {
		$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $dir );
		return array( 'error' => $message );
	}

	$uploads = array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'error' => false );
	return apply_filters( 'upload_dir', $uploads );
}

// return a filename that is sanitized and unique for the given directory
function wp_unique_filename( $dir, $filename, $unique_filename_callback = NULL ) {

	// separate the filename into a name and extension
	$info = pathinfo($filename);
	$ext = $info['extension'];
	$name = basename($filename, ".{$ext}");

	// Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
	if ( $unique_filename_callback && function_exists( $unique_filename_callback ) ) {
		$filename = $unique_filename_callback( $dir, $name );
	} else {
		$number = '';
		$filename = str_replace( '#', '_', $name );
		$filename = str_replace( array( '\\', "'" ), '', $filename );
		if ( empty( $ext) )
			$ext = '';
		else
			$ext = strtolower( ".$ext" );
		$filename = $filename . $ext;
		while ( file_exists( $dir . "/$filename" ) ) {
			if ( '' == "$number$ext" )
				$filename = $filename . ++$number . $ext;
			else
				$filename = str_replace( "$number$ext", ++$number . $ext, $filename );
		}
		$filename = str_replace( $ext, '', $filename );
		$filename = sanitize_title_with_dashes( $filename ) . $ext;
	}

	return $filename;
}

function wp_upload_bits( $name, $deprecated, $bits, $time = NULL ) {
	if ( empty( $name ) )
		return array( 'error' => __( "Empty filename" ) );

	$wp_filetype = wp_check_filetype( $name );
	if ( !$wp_filetype['ext'] )
		return array( 'error' => __( "Invalid file type" ) );

	$upload = wp_upload_dir( $time );

	if ( $upload['error'] !== false )
		return $upload;

	$filename = wp_unique_filename( $upload['path'], $name );

	$new_file = $upload['path'] . "/$filename";
	if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
		$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
		return array( 'error' => $message );
	}

	$ifp = @ fopen( $new_file, 'wb' );
	if ( ! $ifp )
		return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );

	@fwrite( $ifp, $bits );
	fclose( $ifp );
	// Set correct file permissions
	$stat = @ stat( dirname( $new_file ) );
	$perms = $stat['mode'] & 0007777;
	$perms = $perms & 0000666;
	@ chmod( $new_file, $perms );

	// Compute the URL
	$url = $upload['url'] . "/$filename";

	return array( 'file' => $new_file, 'url' => $url, 'error' => false );
}

function wp_ext2type( $ext ) {
	$ext2type = apply_filters('ext2type', array(
		'audio' => array('aac','ac3','aif','aiff','mp1','mp2','mp3','m3a','m4a','m4b','ogg','ram','wav','wma'),
		'video' => array('asf','avi','divx','dv','mov','mpg','mpeg','mp4','mpv','ogm','qt','rm','vob','wmv'),
		'document' => array('doc','pages','odt','rtf','pdf'),
		'spreadsheet' => array('xls','numbers','ods'),
		'interactive' => array('ppt','key','odp','swf'),
		'text' => array('txt'),
		'archive' => array('tar','bz2','gz','cab','dmg','rar','sea','sit','sqx','zip'),
		'code' => array('css','html','php','js'),		
	));
	foreach ( $ext2type as $type => $exts )
		if ( in_array($ext, $exts) )
			return $type;
}

function wp_check_filetype( $filename, $mimes = null ) {
	// Accepted MIME types are set here as PCRE unless provided.
	$mimes = ( is_array( $mimes ) ) ? $mimes : apply_filters( 'upload_mimes', array(
		'jpg|jpeg|jpe' => 'image/jpeg',
		'gif' => 'image/gif',
		'png' => 'image/png',
		'bmp' => 'image/bmp',
		'tif|tiff' => 'image/tiff',
		'ico' => 'image/x-icon',
		'asf|asx|wax|wmv|wmx' => 'video/asf',
		'avi' => 'video/avi',
		'mov|qt' => 'video/quicktime',
		'mpeg|mpg|mpe|mp4' => 'video/mpeg',
		'txt|c|cc|h' => 'text/plain',
		'rtx' => 'text/richtext',
		'css' => 'text/css',
		'htm|html' => 'text/html',
		'mp3|m4a' => 'audio/mpeg',
		'ra|ram' => 'audio/x-realaudio',
		'wav' => 'audio/wav',
		'ogg' => 'audio/ogg',
		'mid|midi' => 'audio/midi',
		'wma' => 'audio/wma',
		'rtf' => 'application/rtf',
		'js' => 'application/javascript',
		'pdf' => 'application/pdf',
		'doc' => 'application/msword',
		'pot|pps|ppt' => 'application/vnd.ms-powerpoint',
		'wri' => 'application/vnd.ms-write',
		'xla|xls|xlt|xlw' => 'application/vnd.ms-excel',
		'mdb' => 'application/vnd.ms-access',
		'mpp' => 'application/vnd.ms-project',
		'swf' => 'application/x-shockwave-flash',
		'class' => 'application/java',
		'tar' => 'application/x-tar',
		'zip' => 'application/zip',
		'gz|gzip' => 'application/x-gzip',
		'exe' => 'application/x-msdownload',
		// openoffice formats
		'odt' => 'application/vnd.oasis.opendocument.text',
		'odp' => 'application/vnd.oasis.opendocument.presentation',
		'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
		'odg' => 'application/vnd.oasis.opendocument.graphics',
		'odc' => 'application/vnd.oasis.opendocument.chart',
		'odb' => 'application/vnd.oasis.opendocument.database',
		'odf' => 'application/vnd.oasis.opendocument.formula',
		)
	);

	$type = false;
	$ext = false;

	foreach ( $mimes as $ext_preg => $mime_match ) {
		$ext_preg = '!\.(' . $ext_preg . ')$!i';
		if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
			$type = $mime_match;
			$ext = $ext_matches[1];
			break;
		}
	}

	return compact( 'ext', 'type' );
}

function wp_explain_nonce( $action ) {
	if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) {
		$verb = $matches[1];
		$noun = $matches[2];

		$trans = array();
		$trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: &quot;%s&quot; has failed.' ), 'get_the_title' );

		$trans['add']['category']      = array( __( 'Your attempt to add this category has failed.' ), false );
		$trans['delete']['category']   = array( __( 'Your attempt to delete this category: &quot;%s&quot; has failed.' ), 'get_catname' );
		$trans['update']['category']   = array( __( 'Your attempt to edit this category: &quot;%s&quot; has failed.' ), 'get_catname' );

		$trans['delete']['comment']    = array( __( 'Your attempt to delete this comment: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['approve']['comment']   = array( __( 'Your attempt to approve this comment: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['update']['comment']    = array( __( 'Your attempt to edit this comment: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['bulk']['comments']     = array( __( 'Your attempt to bulk modify comments has failed.' ), false );
		$trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false );

		$trans['add']['bookmark']      = array( __( 'Your attempt to add this link has failed.' ), false );
		$trans['delete']['bookmark']   = array( __( 'Your attempt to delete this link: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['update']['bookmark']   = array( __( 'Your attempt to edit this link: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['bulk']['bookmarks']    = array( __( 'Your attempt to bulk modify links has failed.' ), false );

		$trans['add']['page']          = array( __( 'Your attempt to add this page has failed.' ), false );
		$trans['delete']['page']       = array( __( 'Your attempt to delete this page: &quot;%s&quot; has failed.' ), 'get_the_title' );
		$trans['update']['page']       = array( __( 'Your attempt to edit this page: &quot;%s&quot; has failed.' ), 'get_the_title' );

		$trans['edit']['plugin']       = array( __( 'Your attempt to edit this plugin file: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['activate']['plugin']   = array( __( 'Your attempt to activate this plugin: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: &quot;%s&quot; has failed.' ), 'use_id' );

		$trans['add']['post']          = array( __( 'Your attempt to add this post has failed.' ), false );
		$trans['delete']['post']       = array( __( 'Your attempt to delete this post: &quot;%s&quot; has failed.' ), 'get_the_title' );
		$trans['update']['post']       = array( __( 'Your attempt to edit this post: &quot;%s&quot; has failed.' ), 'get_the_title' );

		$trans['add']['user']          = array( __( 'Your attempt to add this user has failed.' ), false );
		$trans['delete']['users']      = array( __( 'Your attempt to delete users has failed.' ), false );
		$trans['bulk']['users']        = array( __( 'Your attempt to bulk modify users has failed.' ), false );
		$trans['update']['user']       = array( __( 'Your attempt to edit this user: &quot;%s&quot; has failed.' ), 'get_author_name' );
		$trans['update']['profile']    = array( __( 'Your attempt to modify the profile for: &quot;%s&quot; has failed.' ), 'get_author_name' );

		$trans['update']['options']    = array( __( 'Your attempt to edit your settings has failed.' ), false );
		$trans['update']['permalink']  = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
		$trans['edit']['file']         = array( __( 'Your attempt to edit this file: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['edit']['theme']        = array( __( 'Your attempt to edit this theme file: &quot;%s&quot; has failed.' ), 'use_id' );
		$trans['switch']['theme']      = array( __( 'Your attempt to switch to this theme: &quot;%s&quot; has failed.' ), 'use_id' );

		if ( isset( $trans[$verb][$noun] ) ) {
			if ( !empty( $trans[$verb][$noun][1] ) ) {
				$lookup = $trans[$verb][$noun][1];
				$object = $matches[4];
				if ( 'use_id' != $lookup )
					$object = call_user_func( $lookup, $object );
				return sprintf( $trans[$verb][$noun][0], wp_specialchars($object) );
			} else {
				return $trans[$verb][$noun][0];
			}
		}
	}

	return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), $matches[4] );
}


function wp_nonce_ays( $action ) {
	global $pagenow;
	$title = __( 'WordPress Failure Notice' );
	$html .= "\t<div id='message' class='updated fade'>\n\t<p>" . wp_specialchars( wp_explain_nonce( $action ) ) . "</p>\n\t<p>";
	if ( wp_get_referer() )
		$html .= "<a href='" . remove_query_arg( 'updated', clean_url( wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
	$html .= "</p>\n\t</div>\n";
	$html .= "</body>\n</html>";
	wp_die( $html, $title );
}


function wp_die( $message, $title = '' ) {
	global $wp_locale;

	if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
		if ( empty( $title ) ) {
			$error_data = $message->get_error_data();
			if ( is_array( $error_data ) && isset( $error_data['title'] ) )
				$title = $error_data['title'];
		}
		$errors = $message->get_error_messages();
		switch ( count( $errors ) ) :
		case 0 :
			$message = '';
			break;
		case 1 :
			$message = "<p>{$errors[0]}</p>";
			break;
		default :
			$message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
			break;
		endswitch;
	} elseif ( is_string( $message ) ) {
		$message = "<p>$message</p>";
	}

	if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL )
		$admin_dir = WP_SITEURL . '/wp-admin/';
	elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) )
		$admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/';
	elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false )
		$admin_dir = '';
	else
		$admin_dir = 'wp-admin/';

	if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
	if( !headers_sent() ){
		status_header( 500 );
		nocache_headers();
		header( 'Content-Type: text/html; charset=utf-8' );
	}

	if ( empty($title) ) {
		if ( function_exists( '__' ) )
			$title = __( 'WordPress &rsaquo; Error' );
		else
			$title = 'WordPress &rsaquo; Error';
	}

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title><?php echo $title ?></title>
	<link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install.css" type="text/css" />
<?php
if ( ( $wp_locale ) && ( 'rtl' == $wp_locale->text_direction ) ) : ?>
	<link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install-rtl.css" type="text/css" />
<?php endif; ?>
</head>
<body id="error-page">
<?php endif; ?>
	<?php echo $message; ?>
</body>
</html>
<?php
	die();
}


function _config_wp_home( $url = '' ) {
	if ( defined( 'WP_HOME' ) )
		return WP_HOME;
	return $url;
}


function _config_wp_siteurl( $url = '' ) {
	if ( defined( 'WP_SITEURL' ) )
		return WP_SITEURL;
	return $url;
}


function _mce_set_direction( $input ) {
	global $wp_locale;

	if ( 'rtl' == $wp_locale->text_direction ) {
		$input['directionality'] = 'rtl';
		$input['plugins'] .= ',directionality';
		$input['theme_advanced_buttons1'] .= ',ltr';
	}

	return $input;
}


function smilies_init() {
	global $wpsmiliestrans, $wp_smiliessearch, $wp_smiliesreplace;

	// don't bother setting up smilies if they are disabled
	if ( !get_option( 'use_smilies' ) )
		return;

	if ( !isset( $wpsmiliestrans ) ) {
		$wpsmiliestrans = array(
		':mrgreen:' => 'icon_mrgreen.gif',
		':neutral:' => 'icon_neutral.gif',
		':twisted:' => 'icon_twisted.gif',
		  ':arrow:' => 'icon_arrow.gif',
		  ':shock:' => 'icon_eek.gif',
		  ':smile:' => 'icon_smile.gif',
		    ':???:' => 'icon_confused.gif',
		   ':cool:' => 'icon_cool.gif',
		   ':evil:' => 'icon_evil.gif',
		   ':grin:' => 'icon_biggrin.gif',
		   ':idea:' => 'icon_idea.gif',
		   ':oops:' => 'icon_redface.gif',
		   ':razz:' => 'icon_razz.gif',
		   ':roll:' => 'icon_rolleyes.gif',
		   ':wink:' => 'icon_wink.gif',
		    ':cry:' => 'icon_cry.gif',
		    ':eek:' => 'icon_surprised.gif',
		    ':lol:' => 'icon_lol.gif',
		    ':mad:' => 'icon_mad.gif',
		    ':sad:' => 'icon_sad.gif',
		      '8-)' => 'icon_cool.gif',
		      '8-O' => 'icon_eek.gif',
		      ':-(' => 'icon_sad.gif',
		      ':-)' => 'icon_smile.gif',
		      ':-?' => 'icon_confused.gif',
		      ':-D' => 'icon_biggrin.gif',
		      ':-P' => 'icon_razz.gif',
		      ':-o' => 'icon_surprised.gif',
		      ':-x' => 'icon_mad.gif',
		      ':-|' => 'icon_neutral.gif',
		      ';-)' => 'icon_wink.gif',
		       '8)' => 'icon_cool.gif',
		       '8O' => 'icon_eek.gif',
		       ':(' => 'icon_sad.gif',
		       ':)' => 'icon_smile.gif',
		       ':?' => 'icon_confused.gif',
		       ':D' => 'icon_biggrin.gif',
		       ':P' => 'icon_razz.gif',
		       ':o' => 'icon_surprised.gif',
		       ':x' => 'icon_mad.gif',
		       ':|' => 'icon_neutral.gif',
		       ';)' => 'icon_wink.gif',
		      ':!:' => 'icon_exclaim.gif',
		      ':?:' => 'icon_question.gif',
		);
	}

	$siteurl = get_option( 'siteurl' );
	foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
		$wp_smiliessearch[] = '/(\s|^)' . preg_quote( $smiley, '/' ) . '(\s|$)/';
		$smiley_masked = attribute_escape( trim( $smiley ) );
		$wp_smiliesreplace[] = " <img src='$siteurl/wp-includes/images/smilies/$img' alt='$smiley_masked' class='wp-smiley' /> ";
	}
}


function wp_parse_args( $args, $defaults = '' ) {
	if ( is_object( $args ) )
		$r = get_object_vars( $args );
	elseif ( is_array( $args ) )
		$r =& $args;
	else
		wp_parse_str( $args, $r );

	if ( is_array( $defaults ) )
		return array_merge( $defaults, $r );
	return $r;
}


function wp_maybe_load_widgets() {
	if ( !function_exists( 'dynamic_sidebar' ) ) {
		require_once( ABSPATH . WPINC . '/widgets.php' );
		add_action( '_admin_menu', 'wp_widgets_add_menu' );
	}
}


function wp_widgets_add_menu() {
	global $submenu;
	$submenu['themes.php'][7] = array( __( 'Widgets' ), 'switch_themes', 'widgets.php' );
	ksort( $submenu['themes.php'], SORT_NUMERIC );
}


// For PHP 5.2, make sure all output buffers are flushed
// before our singletons our destroyed.
function wp_ob_end_flush_all() {
	while ( @ob_end_flush() );
}


/*
 * require_wp_db() - require_once the correct database class file.
 *
 * This function is used to load the database class file either at runtime or by wp-admin/setup-config.php
 * We must globalise $wpdb to ensure that it is defined globally by the inline code in wp-db.php
 *
 * @global $wpdb
 */
function require_wp_db() {
	global $wpdb;
	if ( file_exists( ABSPATH . 'wp-content/db.php' ) )
		require_once( ABSPATH . 'wp-content/db.php' );
	else
		require_once( ABSPATH . WPINC . '/wp-db.php' );
}

function dead_db() {
	global $wpdb;

	// Load custom DB error template, if present.
	if ( file_exists( ABSPATH . 'wp-content/db-error.php' ) ) {
		require_once( ABSPATH . 'wp-content/db-error.php' );
		die();
	}

	// If installing or in the admin, provide the verbose message.
	if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )
		wp_die($wpdb->error);

	// Otherwise, be terse.
	status_header( 500 );
	nocache_headers();
	header( 'Content-Type: text/html; charset=utf-8' );
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>Database Error</title>

</head>
<body>
	<h1>Error establishing a database connection</h1>
</body>
</html>
<?php
	die();
}

/**
 * Converts input to an absolute integer
 * @param mixed $maybeint data you wish to have convered to an absolute integer
 * @return int an absolute integer
 */
function absint( $maybeint ) {
	return abs( intval( $maybeint ) );
}

/**
 * Determines if the blog can be accessed over SSL
 * @return bool whether of not SSL access is available
 */
function url_is_accessable_via_ssl($url)
{
	if (in_array('curl', get_loaded_extensions())) {
		 $ssl = preg_replace( '/^http:\/\//', 'https://',  $url );

		 $ch = curl_init();
		 curl_setopt($ch, CURLOPT_URL, $ssl);
		 curl_setopt($ch, CURLOPT_FAILONERROR, true);
		 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

		 curl_exec($ch);

		 $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
		 curl_close ($ch);

		 if ($status == 200 || $status == 401) {
			 return true;
		 }
	}
	return false;
}

function atom_service_url_filter($url)
{
	if ( url_is_accessable_via_ssl($url) )
		return  preg_replace( '/^http:\/\//', 'https://',  $url );
	else
		return $url;
}

/**
 * _deprecated_function() - Marks a function as deprecated and informs when it has been used.
 *
 * There is a hook deprecated_function_run that will be called that can be used to get the backtrace
 * up to what file and function called the deprecated function.
 *
 * The current behavior is to trigger an user error if WP_DEBUG is defined and is true.
 *
 * This function is to be used in every function in depreceated.php
 *
 * @package WordPress
 * @package Debug
 * @since 2.5
 * @access private
 *
 * @uses do_action() Calls 'deprecated_function_run' and passes the function name and what to use instead.
 * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
 *
 * @param string $function The function that was called
 * @param string $version The version of WordPress that depreceated the function
 * @param string $replacement Optional. The function that should have been called
 */
function _deprecated_function($function, $version, $replacement=null) {

	do_action('deprecated_function_run', $function, $replacement);

	// Allow plugin to filter the output error trigger
	if( defined('WP_DEBUG') && ( true === WP_DEBUG ) && apply_filters( 'deprecated_function_trigger_error', true )) {
		if( !is_null($replacement) )
			trigger_error( printf( __("%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead."), $function, $version, $replacement ) );
		else
			trigger_error( printf( __("%1$s is <strong>deprecated</strong> since version %2$s with no alternative available."), $function, $version ) );
	}
}

/**
 * _deprecated_file() - Marks a file as deprecated and informs when it has been used.
 *
 * There is a hook deprecated_file_included that will be called that can be used to get the backtrace
 * up to what file and function included the deprecated file.
 *
 * The current behavior is to trigger an user error if WP_DEBUG is defined and is true.
 *
 * This function is to be used in every file that is depreceated
 *
 * @package WordPress
 * @package Debug
 * @since 2.5
 * @access private
 *
 * @uses do_action() Calls 'deprecated_file_included' and passes the file name and what to use instead.
 * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do trigger or false to not trigger error.
 *
 * @param string $file The file that was included
 * @param string $version The version of WordPress that depreceated the function
 * @param string $replacement Optional. The function that should have been called
 */
function _deprecated_file($file, $version, $replacement=null) {

	do_action('deprecated_file_included', $file, $replacement);

	// Allow plugin to filter the output error trigger
	if( defined('WP_DEBUG') && ( true === WP_DEBUG ) && apply_filters( 'deprecated_file_trigger_error', true )) {
		if( !is_null($replacement) )
			trigger_error( printf( __("%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead."), $file, $version, $replacement ) );
		else
			trigger_error( printf( __("%1$s is <strong>deprecated</strong> since version %2$s with no alternative available."), $file, $version ) );
	}
}
?>