month ) ) && ( !empty( $wp_locale->weekday ) ) ) { $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) ); $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth ); $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) ); $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday ); $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) ); $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( '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 ); } $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' ); $timezone_formats_re = implode( '|', $timezone_formats ); if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) ) { $timezone_string = get_option( 'timezone_string' ); if ( $timezone_string ) { $timezone_object = timezone_open( $timezone_string ); $date_object = date_create( null, $timezone_object ); foreach( $timezone_formats as $timezone_format ) { if ( false !== strpos( $dateformatstring, $timezone_format ) ) { $formatted = date_format( $date_object, $timezone_format ); $dateformatstring = ' '.$dateformatstring; $dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $dateformatstring ); $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 ); } } } } $j = @$datefunc( $dateformatstring, $i ); // allow plugins to redo this entirely for languages with untypical grammars $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt); return $j; } /** * Convert integer number to format based on the locale. * * @since 2.3.0 * * @param int $number The number to convert based on locale. * @param int $decimals Precision of the number of decimal places. * @return string Converted number in string format. */ function number_format_i18n( $number, $decimals = 0 ) { global $wp_locale; $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] ); return apply_filters( 'number_format_i18n', $formatted ); } /** * Convert number of bytes largest unit bytes will fit into. * * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts * number of bytes to human readable number by taking the number of that unit * that the bytes will go into it. Supports TB value. * * Please note that integers in PHP are limited to 32 bits, unless they are on * 64 bit architecture, then they have 64 bit size. If you need to place the * larger size then what PHP integer type will hold, then use a string. It will * be converted to a double, which should always have 64 bit length. * * Technically the correct unit names for powers of 1024 are KiB, MiB etc. * @link http://en.wikipedia.org/wiki/Byte * * @since 2.3.0 * * @param int|string $bytes Number of bytes. Note max integer size for integers. * @param int $decimals Precision of number of decimal places. Deprecated. * @return bool|string False on failure. Number string on success. */ function size_format( $bytes, $decimals = 0 ) { $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; } /** * Get the week start and end from the datetime or date string from mysql. * * @since 0.71 * * @param string $mysqlstring Date or datetime field type from mysql. * @param int $start_of_week Optional. Start of the week as an integer. * @return array Keys are 'start' and 'end'. */ function get_weekstartend( $mysqlstring, $start_of_week = '' ) { $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month $md = substr( $mysqlstring, 5, 2 ); // Mysql string day $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day. $weekday = date( 'w', $day ); // The day of the week from the timestamp if ( !is_numeric($start_of_week) ) $start_of_week = get_option( 'start_of_week' ); if ( $weekday < $start_of_week ) $weekday += 7; $start = $day - DAY_IN_SECONDS * ( $weekday - $start_of_week ); // The most recent week start day on or before $day $end = $start + 7 * DAY_IN_SECONDS - 1; // $start + 7 days - 1 second return compact( 'start', 'end' ); } /** * Unserialize value only if it was serialized. * * @since 2.0.0 * * @param string $original Maybe unserialized original, if is needed. * @return mixed Unserialized data can be any type. */ function maybe_unserialize( $original ) { if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in return @unserialize( $original ); return $original; } /** * Check value to find if it was serialized. * * If $data is not an string, then returned value will always be false. * Serialized data is always a string. * * @since 2.0.5 * * @param mixed $data Value to check to see if was serialized. * @param bool $strict Optional. Whether to be strict about the end of the string. Defaults true. * @return bool False if not serialized and true if it was. */ function is_serialized( $data, $strict = true ) { // if it isn't a string, it isn't serialized if ( ! is_string( $data ) ) return false; $data = trim( $data ); if ( 'N;' == $data ) return true; $length = strlen( $data ); if ( $length < 4 ) return false; if ( ':' !== $data[1] ) return false; if ( $strict ) { $lastc = $data[ $length - 1 ]; if ( ';' !== $lastc && '}' !== $lastc ) return false; } else { $semicolon = strpos( $data, ';' ); $brace = strpos( $data, '}' ); // Either ; or } must exist. if ( false === $semicolon && false === $brace ) return false; // But neither must be in the first X characters. if ( false !== $semicolon && $semicolon < 3 ) return false; if ( false !== $brace && $brace < 4 ) return false; } $token = $data[0]; switch ( $token ) { case 's' : if ( $strict ) { if ( '"' !== $data[ $length - 2 ] ) return false; } elseif ( false === strpos( $data, '"' ) ) { return false; } // or else fall through case 'a' : case 'O' : return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); case 'b' : case 'i' : case 'd' : $end = $strict ? '$' : ''; return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data ); } return false; } /** * Check whether serialized data is of string type. * * @since 2.0.5 * * @param mixed $data Serialized data * @return bool False if not a serialized string, true if it is. */ 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 ); $length = strlen( $data ); if ( $length < 4 ) return false; elseif ( ':' !== $data[1] ) return false; elseif ( ';' !== $data[$length-1] ) return false; elseif ( $data[0] !== 's' ) return false; elseif ( '"' !== $data[$length-2] ) return false; else return true; } /** * Serialize data, if needed. * * @since 2.0.5 * * @param mixed $data Data that might be serialized. * @return mixed A scalar data */ function maybe_serialize( $data ) { if ( is_array( $data ) || is_object( $data ) ) return serialize( $data ); // Double serialization is required for backward compatibility. // See http://core.trac.wordpress.org/ticket/12930 if ( is_serialized( $data, false ) ) return serialize( $data ); return $data; } /** * Retrieve post title from XMLRPC XML. * * If the title element is not part of the XML, then the default post title from * the $post_default_title will be used instead. * * @package WordPress * @subpackage XMLRPC * @since 0.71 * * @global string $post_default_title Default XMLRPC post title. * * @param string $content XMLRPC XML Request content * @return string Post title */ function xmlrpc_getposttitle( $content ) { global $post_default_title; if ( preg_match( '/
sys_get_temp_dir()
,
* followed by your PHP temporary upload directory, followed by WP_CONTENT_DIR,
* before finally defaulting to /tmp/
*
* In the event that this function does not find a writable location,
* It may be overridden by the WP_TEMP_DIR
constant in
* your wp-config.php
file.
*
* @since 2.5.0
*
* @return string Writable temporary directory
*/
function get_temp_dir() {
static $temp;
if ( defined('WP_TEMP_DIR') )
return trailingslashit(WP_TEMP_DIR);
if ( $temp )
return trailingslashit( rtrim( $temp, '\\' ) );
if ( function_exists('sys_get_temp_dir') ) {
$temp = sys_get_temp_dir();
if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
return trailingslashit( rtrim( $temp, '\\' ) );
}
$temp = ini_get('upload_tmp_dir');
if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
return trailingslashit( rtrim( $temp, '\\' ) );
$temp = WP_CONTENT_DIR . '/';
if ( is_dir( $temp ) && wp_is_writable( $temp ) )
return $temp;
$temp = '/tmp/';
return $temp;
}
/**
* Determine if a directory is writable.
*
* This function is used to work around certain ACL issues
* in PHP primarily affecting Windows Servers.
*
* @see win_is_writable()
*
* @since 3.6.0
*
* @param string $path
* @return bool
*/
function wp_is_writable( $path ) {
if ( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) )
return win_is_writable( $path );
else
return @is_writable( $path );
}
/**
* Workaround for Windows bug in is_writable() function
*
* PHP has issues with Windows ACL's for determine if a
* directory is writable or not, this works around them by
* checking the ability to open files rather than relying
* upon PHP to interprate the OS ACL.
*
* @link http://bugs.php.net/bug.php?id=27609
* @link http://bugs.php.net/bug.php?id=30931
*
* @since 2.8.0
*
* @param string $path
* @return bool
*/
function win_is_writable( $path ) {
if ( $path[strlen( $path ) - 1] == '/' ) // if it looks like a directory, check a random file within the directory
return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp');
else if ( is_dir( $path ) ) // If it's a directory (and not a file) check a random file within the directory
return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' );
// check tmp file for read/write capabilities
$should_delete_tmp_file = !file_exists( $path );
$f = @fopen( $path, 'a' );
if ( $f === false )
return false;
fclose( $f );
if ( $should_delete_tmp_file )
unlink( $path );
return true;
}
/**
* Get an array containing the current upload directory's path and url.
*
* Checks the 'upload_path' option, which should be from the web root folder,
* and if it isn't empty it will be used. If it is empty, then the path will be
* 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
* override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
*
* The upload URL path is set either by the 'upload_url_path' option or by using
* the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
*
* If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
* the administration settings panel), then the time will be used. The format
* will be year first and then month.
*
* If the path couldn't be created, then an error will be returned with the key
* 'error' containing the error message. The error suggests that the parent
* directory is not writable by the server.
*
* On success, the returned array will have many indices:
* 'path' - base directory and sub directory or full path to upload directory.
* 'url' - base url and sub directory or absolute URL to upload directory.
* 'subdir' - sub directory if uploads use year/month folders option is on.
* 'basedir' - path without subdir.
* 'baseurl' - URL path without subdir.
* 'error' - set to false.
*
* @since 2.0.0
* @uses apply_filters() Calls 'upload_dir' on returned array.
*
* @param string $time Optional. Time formatted in 'yyyy/mm'.
* @return array See above for description.
*/
function wp_upload_dir( $time = null ) {
$siteurl = get_option( 'siteurl' );
$upload_path = trim( get_option( 'upload_path' ) );
if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) {
$dir = WP_CONTENT_DIR . '/uploads';
} elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) {
// $dir is absolute, $upload_path is (maybe) relative to ABSPATH
$dir = path_join( ABSPATH, $upload_path );
} else {
$dir = $upload_path;
}
if ( !$url = get_option( 'upload_url_path' ) ) {
if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )
$url = WP_CONTENT_URL . '/uploads';
else
$url = trailingslashit( $siteurl ) . $upload_path;
}
// Obey the value of UPLOADS. This happens as long as ms-files rewriting is disabled.
// We also sometimes obey UPLOADS when rewriting is enabled -- see the next block.
if ( defined( 'UPLOADS' ) && ! ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) ) {
$dir = ABSPATH . UPLOADS;
$url = trailingslashit( $siteurl ) . UPLOADS;
}
// If multisite (and if not the main site in a post-MU network)
if ( is_multisite() && ! ( is_main_network() && is_main_site() && defined( 'MULTISITE' ) ) ) {
if ( ! get_site_option( 'ms_files_rewriting' ) ) {
// If ms-files rewriting is disabled (networks created post-3.5), it is fairly straightforward:
// Append sites/%d if we're not on the main site (for post-MU networks). (The extra directory
// prevents a four-digit ID from conflicting with a year-based directory for the main site.
// But if a MU-era network has disabled ms-files rewriting manually, they don't need the extra
// directory, as they never had wp-content/uploads for the main site.)
if ( defined( 'MULTISITE' ) )
$ms_dir = '/sites/' . get_current_blog_id();
else
$ms_dir = '/' . get_current_blog_id();
$dir .= $ms_dir;
$url .= $ms_dir;
} elseif ( defined( 'UPLOADS' ) && ! ms_is_switched() ) {
// Handle the old-form ms-files.php rewriting if the network still has that enabled.
// When ms-files rewriting is enabled, then we only listen to UPLOADS when:
// 1) we are not on the main site in a post-MU network,
// as wp-content/uploads is used there, and
// 2) we are not switched, as ms_upload_constants() hardcodes
// these constants to reflect the original blog ID.
//
// Rather than UPLOADS, we actually use BLOGUPLOADDIR if it is set, as it is absolute.
// (And it will be set, see ms_upload_constants().) Otherwise, UPLOADS can be used, as
// as it is relative to ABSPATH. For the final piece: when UPLOADS is used with ms-files
// rewriting in multisite, the resulting URL is /files. (#WP22702 for background.)
if ( defined( 'BLOGUPLOADDIR' ) )
$dir = untrailingslashit( BLOGUPLOADDIR );
else
$dir = ABSPATH . UPLOADS;
$url = trailingslashit( $siteurl ) . 'files';
}
}
$basedir = $dir;
$baseurl = $url;
$subdir = '';
if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
// Generate the yearly and monthly dirs
if ( !$time )
$time = current_time( 'mysql' );
$y = substr( $time, 0, 4 );
$m = substr( $time, 5, 2 );
$subdir = "/$y/$m";
}
$dir .= $subdir;
$url .= $subdir;
$uploads = apply_filters( 'upload_dir',
array(
'path' => $dir,
'url' => $url,
'subdir' => $subdir,
'basedir' => $basedir,
'baseurl' => $baseurl,
'error' => false,
) );
// Make sure we have an uploads dir
if ( ! wp_mkdir_p( $uploads['path'] ) ) {
if ( 0 === strpos( $uploads['basedir'], ABSPATH ) )
$error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir'];
else
$error_path = basename( $uploads['basedir'] ) . $uploads['subdir'];
$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path );
$uploads['error'] = $message;
}
return $uploads;
}
/**
* Get a filename that is sanitized and unique for the given directory.
*
* If the filename is not unique, then a number will be added to the filename
* before the extension, and will continue adding numbers until the filename is
* unique.
*
* The callback is passed three parameters, the first one is the directory, the
* second is the filename, and the third is the extension.
*
* @since 2.5.0
*
* @param string $dir
* @param string $filename
* @param mixed $unique_filename_callback Callback.
* @return string New filename, if given wasn't unique.
*/
function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
// sanitize the file name before we begin processing
$filename = sanitize_file_name($filename);
// separate the filename into a name and extension
$info = pathinfo($filename);
$ext = !empty($info['extension']) ? '.' . $info['extension'] : '';
$name = basename($filename, $ext);
// edge case: if file is named '.ext', treat as an empty name
if ( $name === $ext )
$name = '';
// Increment the file number until we have a unique file to save in $dir. Use callback if supplied.
if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) {
$filename = call_user_func( $unique_filename_callback, $dir, $name, $ext );
} else {
$number = '';
// change '.ext' to lower case
if ( $ext && strtolower($ext) != $ext ) {
$ext2 = strtolower($ext);
$filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );
// check for both lower and upper case extension or image sub-sizes may be overwritten
while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
$new_number = $number + 1;
$filename = str_replace( "$number$ext", "$new_number$ext", $filename );
$filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );
$number = $new_number;
}
return $filename2;
}
while ( file_exists( $dir . "/$filename" ) ) {
if ( '' == "$number$ext" )
$filename = $filename . ++$number . $ext;
else
$filename = str_replace( "$number$ext", ++$number . $ext, $filename );
}
}
return $filename;
}
/**
* Create a file in the upload folder with given content.
*
* If there is an error, then the key 'error' will exist with the error message.
* If success, then the key 'file' will have the unique file path, the 'url' key
* will have the link to the new file. and the 'error' key will be set to false.
*
* This function will not move an uploaded file to the upload folder. It will
* create a new file with the content in $bits parameter. If you move the upload
* file, read the content of the uploaded file, and then you can give the
* filename and content to this function, which will add it to the upload
* folder.
*
* The permissions will be set on the new file automatically by this function.
*
* @since 2.0.0
*
* @param string $name
* @param null $deprecated Never used. Set to null.
* @param mixed $bits File content
* @param string $time Optional. Time formatted in 'yyyy/mm'.
* @return array
*/
function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '2.0' );
if ( empty( $name ) )
return array( 'error' => __( 'Empty filename' ) );
$wp_filetype = wp_check_filetype( $name );
if ( ! $wp_filetype['ext'] && ! current_user_can( 'unfiltered_upload' ) )
return array( 'error' => __( 'Invalid file type' ) );
$upload = wp_upload_dir( $time );
if ( $upload['error'] !== false )
return $upload;
$upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) );
if ( !is_array( $upload_bits_error ) ) {
$upload[ 'error' ] = $upload_bits_error;
return $upload;
}
$filename = wp_unique_filename( $upload['path'], $name );
$new_file = $upload['path'] . "/$filename";
if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
if ( 0 === strpos( $upload['basedir'], ABSPATH ) )
$error_path = str_replace( ABSPATH, '', $upload['basedir'] ) . $upload['subdir'];
else
$error_path = basename( $upload['basedir'] ) . $upload['subdir'];
$message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path );
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 );
clearstatcache();
// Set correct file permissions
$stat = @ stat( dirname( $new_file ) );
$perms = $stat['mode'] & 0007777;
$perms = $perms & 0000666;
@ chmod( $new_file, $perms );
clearstatcache();
// Compute the URL
$url = $upload['url'] . "/$filename";
return array( 'file' => $new_file, 'url' => $url, 'error' => false );
}
/**
* Retrieve the file type based on the extension name.
*
* @package WordPress
* @since 2.5.0
* @uses apply_filters() Calls 'ext2type' hook on default supported types.
*
* @param string $ext The extension to search.
* @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
*/
function wp_ext2type( $ext ) {
$ext = strtolower( $ext );
$ext2type = apply_filters( 'ext2type', array(
'image' => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico' ),
'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),
'video' => array( 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),
'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'rtf', 'wp', 'wpd' ),
'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsm', 'xlsb' ),
'interactive' => array( 'swf', 'key', 'ppt', 'pptx', 'pptm', 'pps', 'ppsx', 'ppsm', 'sldx', 'sldm', 'odp' ),
'text' => array( 'asc', 'csv', 'tsv', 'txt' ),
'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip', '7z' ),
'code' => array( 'css', 'htm', 'html', 'php', 'js' ),
) );
foreach ( $ext2type as $type => $exts )
if ( in_array( $ext, $exts ) )
return $type;
return null;
}
/**
* Retrieve the file type from the file name.
*
* You can optionally define the mime array, if needed.
*
* @since 2.0.4
*
* @param string $filename File name or path.
* @param array $mimes Optional. Key is the file extension with value as the mime type.
* @return array Values with extension first and mime type.
*/
function wp_check_filetype( $filename, $mimes = null ) {
if ( empty($mimes) )
$mimes = get_allowed_mime_types();
$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' );
}
/**
* Attempt to determine the real file type of a file.
* If unable to, the file name extension will be used to determine type.
*
* If it's determined that the extension does not match the file's real type,
* then the "proper_filename" value will be set with a proper filename and extension.
*
* Currently this function only supports validating images known to getimagesize().
*
* @since 3.0.0
*
* @param string $file Full path to the image.
* @param string $filename The filename of the image (may differ from $file due to $file being in a tmp directory)
* @param array $mimes Optional. Key is the file extension with value as the mime type.
* @return array Values for the extension, MIME, and either a corrected filename or false if original $filename is valid
*/
function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
$proper_filename = false;
// Do basic extension validation and MIME mapping
$wp_filetype = wp_check_filetype( $filename, $mimes );
extract( $wp_filetype );
// We can't do any further validation without a file to work with
if ( ! file_exists( $file ) )
return compact( 'ext', 'type', 'proper_filename' );
// We're able to validate images using GD
if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) {
// Attempt to figure out what type of image it actually is
$imgstats = @getimagesize( $file );
// If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME
if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) {
// This is a simplified array of MIMEs that getimagesize() can detect and their extensions
// You shouldn't need to use this filter, but it's here just in case
$mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array(
'image/jpeg' => 'jpg',
'image/png' => 'png',
'image/gif' => 'gif',
'image/bmp' => 'bmp',
'image/tiff' => 'tif',
) );
// Replace whatever is after the last period in the filename with the correct extension
if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) {
$filename_parts = explode( '.', $filename );
array_pop( $filename_parts );
$filename_parts[] = $mime_to_ext[ $imgstats['mime'] ];
$new_filename = implode( '.', $filename_parts );
if ( $new_filename != $filename )
$proper_filename = $new_filename; // Mark that it changed
// Redefine the extension / MIME
$wp_filetype = wp_check_filetype( $new_filename, $mimes );
extract( $wp_filetype );
}
}
}
// Let plugins try and validate other types of files
// Should return an array in the style of array( 'ext' => $ext, 'type' => $type, 'proper_filename' => $proper_filename )
return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes );
}
/**
* Retrieve list of mime types and file extensions.
*
* @since 3.5.0
*
* @uses apply_filters() Calls 'mime_types' on returned array. This filter should
* be used to add types, not remove them. To remove types use the upload_mimes filter.
*
* @return array Array of mime types keyed by the file extension regex corresponding to those types.
*/
function wp_get_mime_types() {
// Accepted MIME types are set here as PCRE unless provided.
return apply_filters( 'mime_types', array(
// Image formats
'jpg|jpeg|jpe' => 'image/jpeg',
'gif' => 'image/gif',
'png' => 'image/png',
'bmp' => 'image/bmp',
'tif|tiff' => 'image/tiff',
'ico' => 'image/x-icon',
// Video formats
'asf|asx' => 'video/x-ms-asf',
'wmv' => 'video/x-ms-wmv',
'wmx' => 'video/x-ms-wmx',
'wm' => 'video/x-ms-wm',
'avi' => 'video/avi',
'divx' => 'video/divx',
'flv' => 'video/x-flv',
'mov|qt' => 'video/quicktime',
'mpeg|mpg|mpe' => 'video/mpeg',
'mp4|m4v' => 'video/mp4',
'ogv' => 'video/ogg',
'webm' => 'video/webm',
'mkv' => 'video/x-matroska',
// Text formats
'txt|asc|c|cc|h' => 'text/plain',
'csv' => 'text/csv',
'tsv' => 'text/tab-separated-values',
'ics' => 'text/calendar',
'rtx' => 'text/richtext',
'css' => 'text/css',
'htm|html' => 'text/html',
// Audio formats
'mp3|m4a|m4b' => 'audio/mpeg',
'ra|ram' => 'audio/x-realaudio',
'wav' => 'audio/wav',
'ogg|oga' => 'audio/ogg',
'mid|midi' => 'audio/midi',
'wma' => 'audio/x-ms-wma',
'wax' => 'audio/x-ms-wax',
'mka' => 'audio/x-matroska',
// Misc application formats
'rtf' => 'application/rtf',
'js' => 'application/javascript',
'pdf' => 'application/pdf',
'swf' => 'application/x-shockwave-flash',
'class' => 'application/java',
'tar' => 'application/x-tar',
'zip' => 'application/zip',
'gz|gzip' => 'application/x-gzip',
'rar' => 'application/rar',
'7z' => 'application/x-7z-compressed',
'exe' => 'application/x-msdownload',
// MS Office formats
'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',
'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
'sldm' => 'application/vnd.ms-powerpoint.slide.macroEnabled.12',
'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',
// 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',
// WordPerfect formats
'wp|wpd' => 'application/wordperfect',
// iWork formats
'key' => 'application/vnd.apple.keynote',
'numbers' => 'application/vnd.apple.numbers',
'pages' => 'application/vnd.apple.pages',
) );
}
/**
* Retrieve list of allowed mime types and file extensions.
*
* @since 2.8.6
*
* @uses apply_filters() Calls 'upload_mimes' on returned array
* @uses wp_get_upload_mime_types() to fetch the list of mime types
*
* @param int|WP_User $user Optional. User to check. Defaults to current user.
* @return array Array of mime types keyed by the file extension regex corresponding to those types.
*/
function get_allowed_mime_types( $user = null ) {
$t = wp_get_mime_types();
unset( $t['swf'], $t['exe'] );
if ( function_exists( 'current_user_can' ) )
$unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' );
if ( empty( $unfiltered ) )
unset( $t['htm|html'] );
return apply_filters( 'upload_mimes', $t, $user );
}
/**
* Display "Are You Sure" message to confirm the action being taken.
*
* If the action has the nonce explain message, then it will be displayed along
* with the "Are you sure?" message.
*
* @package WordPress
* @subpackage Security
* @since 2.0.4
*
* @param string $action The nonce action.
*/
function wp_nonce_ays( $action ) {
$title = __( 'WordPress Failure Notice' );
if ( 'log-out' == $action ) {
$html = sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'name' ) ) . ''; $html .= sprintf( __( "Do you really want to log out?"), wp_logout_url() ); } else { $html = __( 'Are you sure you want to do this?' ); if ( wp_get_referer() ) $html .= "
" . __( 'Please try again.' ) . ""; } wp_die( $html, $title, array('response' => 403) ); } /** * Kill WordPress execution and display HTML message with error message. * * This function complements the die() PHP function. The difference is that * HTML will be displayed to the user. It is recommended to use this function * only, when the execution should not continue any further. It is not * recommended to call this function very often and try to handle as many errors * as possible silently. * * @since 2.0.4 * * @param string $message Error message. * @param string $title Error title. * @param string|array $args Optional arguments to control behavior. */ function wp_die( $message = '', $title = '', $args = array() ) { if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) $function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' ); elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' ); else $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' ); call_user_func( $function, $message, $title, $args ); } /** * Kill WordPress execution and display HTML message with error message. * * This is the default handler for wp_die if you want a custom one for your * site then you can overload using the wp_die_handler filter in wp_die * * @since 3.0.0 * @access private * * @param string $message Error message. * @param string $title Error title. * @param string|array $args Optional arguments to control behavior. */ function _default_wp_die_handler( $message, $title = '', $args = array() ) { $defaults = array( 'response' => 500 ); $r = wp_parse_args($args, $defaults); $have_gettext = function_exists('__'); 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 : $message = "
{$errors[0]}
"; break; default : $message = "$message
"; } if ( isset( $r['back_link'] ) && $r['back_link'] ) { $back_text = $have_gettext? __('« Back') : '« Back'; $message .= "\n"; } if ( ! did_action( 'admin_head' ) ) : if ( !headers_sent() ) { status_header( $r['response'] ); nocache_headers(); header( 'Content-Type: text/html; charset=utf-8' ); } if ( empty($title) ) $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error'; $text_direction = 'ltr'; if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] ) $text_direction = 'rtl'; elseif ( function_exists( 'is_rtl' ) && is_rtl() ) $text_direction = 'rtl'; ?> >
* if ( !empty($deprecated) )
* _deprecated_argument( __FUNCTION__, '3.0' );
*
*
* There is a hook deprecated_argument_run that will be called that can be used
* to get the backtrace up to what file and function used the deprecated
* argument.
*
* The current behavior is to trigger a user error if WP_DEBUG is true.
*
* @package WordPress
* @subpackage Debug
* @since 3.0.0
* @access private
*
* @uses do_action() Calls 'deprecated_argument_run' and passes the function name, a message on the change,
* and the version in which the argument was deprecated.
* @uses apply_filters() Calls 'deprecated_argument_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 deprecated the argument used
* @param string $message Optional. A message regarding the change.
*/
function _deprecated_argument( $function, $version, $message = null ) {
do_action( 'deprecated_argument_run', $function, $message, $version );
// Allow plugin to filter the output error trigger
if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {
if ( function_exists( '__' ) ) {
if ( ! is_null( $message ) )
trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s! %3$s'), $function, $version, $message ) );
else
trigger_error( sprintf( __('%1$s was called with an argument that is deprecated since version %2$s with no alternative available.'), $function, $version ) );
} else {
if ( ! is_null( $message ) )
trigger_error( sprintf( '%1$s was called with an argument that is deprecated since version %2$s! %3$s', $function, $version, $message ) );
else
trigger_error( sprintf( '%1$s was called with an argument that is deprecated since version %2$s with no alternative available.', $function, $version ) );
}
}
}
/**
* Marks something as being incorrectly called.
*
* There is a hook doing_it_wrong_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 a user error if WP_DEBUG is true.
*
* @package WordPress
* @subpackage Debug
* @since 3.1.0
* @access private
*
* @uses do_action() Calls 'doing_it_wrong_run' and passes the function arguments.
* @uses apply_filters() Calls 'doing_it_wrong_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 $message A message explaining what has been done incorrectly.
* @param string $version The version of WordPress where the message was added.
*/
function _doing_it_wrong( $function, $message, $version ) {
do_action( 'doing_it_wrong_run', $function, $message, $version );
// Allow plugin to filter the output error trigger
if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) {
if ( function_exists( '__' ) ) {
$version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version );
$message .= ' ' . __( 'Please see Debugging in WordPress for more information.' );
trigger_error( sprintf( __( '%1$s was called incorrectly. %2$s %3$s' ), $function, $message, $version ) );
} else {
$version = is_null( $version ) ? '' : sprintf( '(This message was added in version %s.)', $version );
$message .= ' Please see Debugging in WordPress for more information.';
trigger_error( sprintf( '%1$s was called incorrectly. %2$s %3$s', $function, $message, $version ) );
}
}
}
/**
* Is the server running earlier than 1.5.0 version of lighttpd?
*
* @since 2.5.0
*
* @return bool Whether the server is running lighttpd < 1.5.0
*/
function is_lighttpd_before_150() {
$server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );
$server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';
return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );
}
/**
* Does the specified module exist in the Apache config?
*
* @since 2.5.0
*
* @param string $mod e.g. mod_rewrite
* @param bool $default The default return value if the module is not found
* @return bool
*/
function apache_mod_loaded($mod, $default = false) {
global $is_apache;
if ( !$is_apache )
return false;
if ( function_exists('apache_get_modules') ) {
$mods = apache_get_modules();
if ( in_array($mod, $mods) )
return true;
} elseif ( function_exists('phpinfo') ) {
ob_start();
phpinfo(8);
$phpinfo = ob_get_clean();
if ( false !== strpos($phpinfo, $mod) )
return true;
}
return $default;
}
/**
* Check if IIS 7+ supports pretty permalinks.
*
* @since 2.8.0
*
* @return bool
*/
function iis7_supports_permalinks() {
global $is_iis7;
$supports_permalinks = false;
if ( $is_iis7 ) {
/* First we check if the DOMDocument class exists. If it does not exist, then we cannot
* easily update the xml configuration file, hence we just bail out and tell user that
* pretty permalinks cannot be used.
*
* Next we check if the URL Rewrite Module 1.1 is loaded and enabled for the web site. When
* URL Rewrite 1.1 is loaded it always sets a server variable called 'IIS_UrlRewriteModule'.
* Lastly we make sure that PHP is running via FastCGI. This is important because if it runs
* via ISAPI then pretty permalinks will not work.
*/
$supports_permalinks = class_exists('DOMDocument') && isset($_SERVER['IIS_UrlRewriteModule']) && ( php_sapi_name() == 'cgi-fcgi' );
}
return apply_filters('iis7_supports_permalinks', $supports_permalinks);
}
/**
* File validates against allowed set of defined rules.
*
* A return value of '1' means that the $file contains either '..' or './'. A
* return value of '2' means that the $file contains ':' after the first
* character. A return value of '3' means that the file is not in the allowed
* files list.
*
* @since 1.2.0
*
* @param string $file File path.
* @param array $allowed_files List of allowed files.
* @return int 0 means nothing is wrong, greater than 0 means something was wrong.
*/
function validate_file( $file, $allowed_files = '' ) {
if ( false !== strpos( $file, '..' ) )
return 1;
if ( false !== strpos( $file, './' ) )
return 1;
if ( ! empty( $allowed_files ) && ! in_array( $file, $allowed_files ) )
return 3;
if (':' == substr( $file, 1, 1 ) )
return 2;
return 0;
}
/**
* Determine if SSL is used.
*
* @since 2.6.0
*
* @return bool True if SSL, false if not used.
*/
function is_ssl() {
if ( isset($_SERVER['HTTPS']) ) {
if ( 'on' == strtolower($_SERVER['HTTPS']) )
return true;
if ( '1' == $_SERVER['HTTPS'] )
return true;
} elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
return true;
}
return false;
}
/**
* Whether SSL login should be forced.
*
* @since 2.6.0
*
* @param string|bool $force Optional.
* @return bool True if forced, false if not forced.
*/
function force_ssl_login( $force = null ) {
static $forced = false;
if ( !is_null( $force ) ) {
$old_forced = $forced;
$forced = $force;
return $old_forced;
}
return $forced;
}
/**
* Whether to force SSL used for the Administration Screens.
*
* @since 2.6.0
*
* @param string|bool $force
* @return bool True if forced, false if not forced.
*/
function force_ssl_admin( $force = null ) {
static $forced = false;
if ( !is_null( $force ) ) {
$old_forced = $forced;
$forced = $force;
return $old_forced;
}
return $forced;
}
/**
* Guess the URL for the site.
*
* Will remove wp-admin links to retrieve only return URLs not in the wp-admin
* directory.
*
* @since 2.6.0
*
* @return string
*/
function wp_guess_url() {
if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {
$url = WP_SITEURL;
} else {
$abspath_fix = str_replace( '\\', '/', ABSPATH );
$script_filename_dir = dirname( $_SERVER['SCRIPT_FILENAME'] );
// The request is for the admin
if ( strpos( $_SERVER['REQUEST_URI'], 'wp-admin' ) !== false || strpos( $_SERVER['REQUEST_URI'], 'wp-login.php' ) !== false ) {
$path = preg_replace( '#/(wp-admin/.*|wp-login.php)#i', '', $_SERVER['REQUEST_URI'] );
// The request is for a file in ABSPATH
} elseif ( $script_filename_dir . '/' == $abspath_fix ) {
// Strip off any file/query params in the path
$path = preg_replace( '#/[^/]*$#i', '', $_SERVER['PHP_SELF'] );
} else {
if ( false !== strpos( $_SERVER['SCRIPT_FILENAME'], $abspath_fix ) ) {
// Request is hitting a file inside ABSPATH
$directory = str_replace( ABSPATH, '', $script_filename_dir );
// Strip off the sub directory, and any file/query paramss
$path = preg_replace( '#/' . preg_quote( $directory, '#' ) . '/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] );
} elseif ( false !== strpos( $abspath_fix, $script_filename_dir ) ) {
// Request is hitting a file above ABSPATH
$subdirectory = str_replace( $script_filename_dir, '', $abspath_fix );
// Strip off any file/query params from the path, appending the sub directory to the install
$path = preg_replace( '#/[^/]*$#i', '' , $_SERVER['REQUEST_URI'] ) . $subdirectory;
} else {
$path = $_SERVER['REQUEST_URI'];
}
}
$schema = is_ssl() ? 'https://' : 'http://'; // set_url_scheme() is not defined yet
$url = $schema . $_SERVER['HTTP_HOST'] . $path;
}
return rtrim($url, '/');
}
/**
* Temporarily suspend cache additions.
*
* Stops more data being added to the cache, but still allows cache retrieval.
* This is useful for actions, such as imports, when a lot of data would otherwise
* be almost uselessly added to the cache.
*
* Suspension lasts for a single page load at most. Remember to call this
* function again if you wish to re-enable cache adds earlier.
*
* @since 3.3.0
*
* @param bool $suspend Optional. Suspends additions if true, re-enables them if false.
* @return bool The current suspend setting
*/
function wp_suspend_cache_addition( $suspend = null ) {
static $_suspend = false;
if ( is_bool( $suspend ) )
$_suspend = $suspend;
return $_suspend;
}
/**
* Suspend cache invalidation.
*
* Turns cache invalidation on and off. Useful during imports where you don't wont to do invalidations
* every time a post is inserted. Callers must be sure that what they are doing won't lead to an inconsistent
* cache when invalidation is suspended.
*
* @since 2.7.0
*
* @param bool $suspend Whether to suspend or enable cache invalidation
* @return bool The current suspend setting
*/
function wp_suspend_cache_invalidation($suspend = true) {
global $_wp_suspend_cache_invalidation;
$current_suspend = $_wp_suspend_cache_invalidation;
$_wp_suspend_cache_invalidation = $suspend;
return $current_suspend;
}
/**
* Whether a site is the main site of the current network.
*
* @since 3.0.0
*
* @param int $site_id Optional. Site ID to test. Defaults to current site.
* @return bool True if $site_id is the main site of the network, or if not running multisite.
*/
function is_main_site( $site_id = null ) {
// This is the current network's information; 'site' is old terminology.
global $current_site;
if ( ! is_multisite() )
return true;
if ( ! $site_id )
$site_id = get_current_blog_id();
return (int) $site_id === (int) $current_site->blog_id;
}
/**
* Whether a network is the main network of the multisite install.
*
* @since 3.7.0
*
* @param int $network_id Optional. Network ID to test. Defaults to current network.
* @return bool True if $network_id is the main network, or if not running multisite.
*/
function is_main_network( $network_id = null ) {
global $current_site, $wpdb;
$current_network_id = (int) $current_site->id;
if ( ! is_multisite() )
return true;
if ( ! $network_id )
$network_id = $current_network_id;
$network_id = (int) $network_id;
if ( defined( 'PRIMARY_NETWORK_ID' ) )
return $network_id === (int) PRIMARY_NETWORK_ID;
if ( 1 === $current_network_id )
return $network_id === $current_network_id;
$primary_network_id = (int) wp_cache_get( 'primary_network_id', 'site-options' );
if ( $primary_network_id )
return $network_id === $primary_network_id;
$primary_network_id = (int) $wpdb->get_var( "SELECT id FROM $wpdb->site ORDER BY id LIMIT 1" );
wp_cache_add( 'primary_network_id', $primary_network_id, 'site-options' );
return $network_id === $primary_network_id;
}
/**
* Whether global terms are enabled.
*
*
* @since 3.0.0
* @package WordPress
*
* @return bool True if multisite and global terms enabled
*/
function global_terms_enabled() {
if ( ! is_multisite() )
return false;
static $global_terms = null;
if ( is_null( $global_terms ) ) {
$filter = apply_filters( 'global_terms_enabled', null );
if ( ! is_null( $filter ) )
$global_terms = (bool) $filter;
else
$global_terms = (bool) get_site_option( 'global_terms_enabled', false );
}
return $global_terms;
}
/**
* gmt_offset modification for smart timezone handling.
*
* Overrides the gmt_offset option if we have a timezone_string available.
*
* @since 2.8.0
*
* @return float|bool
*/
function wp_timezone_override_offset() {
if ( !$timezone_string = get_option( 'timezone_string' ) ) {
return false;
}
$timezone_object = timezone_open( $timezone_string );
$datetime_object = date_create();
if ( false === $timezone_object || false === $datetime_object ) {
return false;
}
return round( timezone_offset_get( $timezone_object, $datetime_object ) / HOUR_IN_SECONDS, 2 );
}
/**
* Sort-helper for timezones.
*
* @since 2.9.0
*
* @param array $a
* @param array $b
* @return int
*/
function _wp_timezone_choice_usort_callback( $a, $b ) {
// Don't use translated versions of Etc
if ( 'Etc' === $a['continent'] && 'Etc' === $b['continent'] ) {
// Make the order of these more like the old dropdown
if ( 'GMT+' === substr( $a['city'], 0, 4 ) && 'GMT+' === substr( $b['city'], 0, 4 ) ) {
return -1 * ( strnatcasecmp( $a['city'], $b['city'] ) );
}
if ( 'UTC' === $a['city'] ) {
if ( 'GMT+' === substr( $b['city'], 0, 4 ) ) {
return 1;
}
return -1;
}
if ( 'UTC' === $b['city'] ) {
if ( 'GMT+' === substr( $a['city'], 0, 4 ) ) {
return -1;
}
return 1;
}
return strnatcasecmp( $a['city'], $b['city'] );
}
if ( $a['t_continent'] == $b['t_continent'] ) {
if ( $a['t_city'] == $b['t_city'] ) {
return strnatcasecmp( $a['t_subcity'], $b['t_subcity'] );
}
return strnatcasecmp( $a['t_city'], $b['t_city'] );
} else {
// Force Etc to the bottom of the list
if ( 'Etc' === $a['continent'] ) {
return 1;
}
if ( 'Etc' === $b['continent'] ) {
return -1;
}
return strnatcasecmp( $a['t_continent'], $b['t_continent'] );
}
}
/**
* Gives a nicely formatted list of timezone strings.
*
* @since 2.9.0
*
* @param string $selected_zone Selected Zone
* @return string
*/
function wp_timezone_choice( $selected_zone ) {
static $mo_loaded = false;
$continents = array( 'Africa', 'America', 'Antarctica', 'Arctic', 'Asia', 'Atlantic', 'Australia', 'Europe', 'Indian', 'Pacific');
// Load translations for continents and cities
if ( !$mo_loaded ) {
$locale = get_locale();
$mofile = WP_LANG_DIR . '/continents-cities-' . $locale . '.mo';
load_textdomain( 'continents-cities', $mofile );
$mo_loaded = true;
}
$zonen = array();
foreach ( timezone_identifiers_list() as $zone ) {
$zone = explode( '/', $zone );
if ( !in_array( $zone[0], $continents ) ) {
continue;
}
// This determines what gets set and translated - we don't translate Etc/* strings here, they are done later
$exists = array(
0 => ( isset( $zone[0] ) && $zone[0] ),
1 => ( isset( $zone[1] ) && $zone[1] ),
2 => ( isset( $zone[2] ) && $zone[2] ),
);
$exists[3] = ( $exists[0] && 'Etc' !== $zone[0] );
$exists[4] = ( $exists[1] && $exists[3] );
$exists[5] = ( $exists[2] && $exists[3] );
$zonen[] = array(
'continent' => ( $exists[0] ? $zone[0] : '' ),
'city' => ( $exists[1] ? $zone[1] : '' ),
'subcity' => ( $exists[2] ? $zone[2] : '' ),
't_continent' => ( $exists[3] ? translate( str_replace( '_', ' ', $zone[0] ), 'continents-cities' ) : '' ),
't_city' => ( $exists[4] ? translate( str_replace( '_', ' ', $zone[1] ), 'continents-cities' ) : '' ),
't_subcity' => ( $exists[5] ? translate( str_replace( '_', ' ', $zone[2] ), 'continents-cities' ) : '' )
);
}
usort( $zonen, '_wp_timezone_choice_usort_callback' );
$structure = array();
if ( empty( $selected_zone ) ) {
$structure[] = '';
}
foreach ( $zonen as $key => $zone ) {
// Build value in an array to join later
$value = array( $zone['continent'] );
if ( empty( $zone['city'] ) ) {
// It's at the continent level (generally won't happen)
$display = $zone['t_continent'];
} else {
// It's inside a continent group
// Continent optgroup
if ( !isset( $zonen[$key - 1] ) || $zonen[$key - 1]['continent'] !== $zone['continent'] ) {
$label = $zone['t_continent'];
$structure[] = '';
}
}
// Do UTC
$structure[] = '';
// Do manual UTC offsets
$structure[] = '';
return join( "\n", $structure );
}
/**
* Strip close comment and close php tags from file headers used by WP.
* See http://core.trac.wordpress.org/ticket/8497
*
* @since 2.8.0
*
* @param string $str
* @return string
*/
function _cleanup_header_comment($str) {
return trim(preg_replace("/\s*(?:\*\/|\?>).*/", '', $str));
}
/**
* Permanently deletes posts, pages, attachments, and comments which have been in the trash for EMPTY_TRASH_DAYS.
*
* @since 2.9.0
*/
function wp_scheduled_delete() {
global $wpdb;
$delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );
$posts_to_delete = $wpdb->get_results($wpdb->prepare("SELECT post_id FROM $wpdb->postmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);
foreach ( (array) $posts_to_delete as $post ) {
$post_id = (int) $post['post_id'];
if ( !$post_id )
continue;
$del_post = get_post($post_id);
if ( !$del_post || 'trash' != $del_post->post_status ) {
delete_post_meta($post_id, '_wp_trash_meta_status');
delete_post_meta($post_id, '_wp_trash_meta_time');
} else {
wp_delete_post($post_id);
}
}
$comments_to_delete = $wpdb->get_results($wpdb->prepare("SELECT comment_id FROM $wpdb->commentmeta WHERE meta_key = '_wp_trash_meta_time' AND meta_value < '%d'", $delete_timestamp), ARRAY_A);
foreach ( (array) $comments_to_delete as $comment ) {
$comment_id = (int) $comment['comment_id'];
if ( !$comment_id )
continue;
$del_comment = get_comment($comment_id);
if ( !$del_comment || 'trash' != $del_comment->comment_approved ) {
delete_comment_meta($comment_id, '_wp_trash_meta_time');
delete_comment_meta($comment_id, '_wp_trash_meta_status');
} else {
wp_delete_comment($comment_id);
}
}
}
/**
* Retrieve metadata from a file.
*
* Searches for metadata in the first 8kiB of a file, such as a plugin or theme.
* Each piece of metadata must be on its own line. Fields can not span multiple
* lines, the value will get cut at the end of the first line.
*
* If the file data is not within that first 8kiB, then the author should correct
* their plugin file and move the data headers to the top.
*
* @see http://codex.wordpress.org/File_Header
*
* @since 2.9.0
* @param string $file Path to the file
* @param array $default_headers List of headers, in the format array('HeaderKey' => 'Header Name')
* @param string $context If specified adds filter hook "extra_{$context}_headers"
*/
function get_file_data( $file, $default_headers, $context = '' ) {
// We don't need to write to the file, so just open for reading.
$fp = fopen( $file, 'r' );
// Pull only the first 8kiB of the file in.
$file_data = fread( $fp, 8192 );
// PHP will close file handle, but we are good citizens.
fclose( $fp );
// Make sure we catch CR-only line endings.
$file_data = str_replace( "\r", "\n", $file_data );
if ( $context && $extra_headers = apply_filters( "extra_{$context}_headers", array() ) ) {
$extra_headers = array_combine( $extra_headers, $extra_headers ); // keys equal values
$all_headers = array_merge( $extra_headers, (array) $default_headers );
} else {
$all_headers = $default_headers;
}
foreach ( $all_headers as $field => $regex ) {
if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, $match ) && $match[1] )
$all_headers[ $field ] = _cleanup_header_comment( $match[1] );
else
$all_headers[ $field ] = '';
}
return $all_headers;
}
/**
* Returns true.
*
* Useful for returning true to filters easily.
*
* @since 3.0.0
* @see __return_false()
* @return bool true
*/
function __return_true() {
return true;
}
/**
* Returns false.
*
* Useful for returning false to filters easily.
*
* @since 3.0.0
* @see __return_true()
* @return bool false
*/
function __return_false() {
return false;
}
/**
* Returns 0.
*
* Useful for returning 0 to filters easily.
*
* @since 3.0.0
* @see __return_zero()
* @return int 0
*/
function __return_zero() {
return 0;
}
/**
* Returns an empty array.
*
* Useful for returning an empty array to filters easily.
*
* @since 3.0.0
* @see __return_zero()
* @return array Empty array
*/
function __return_empty_array() {
return array();
}
/**
* Returns null.
*
* Useful for returning null to filters easily.
*
* @since 3.4.0
* @return null
*/
function __return_null() {
return null;
}
/**
* Returns an empty string.
*
* Useful for returning an empty string to filters easily.
*
* @since 3.7.0
* @see __return_null()
* @return string Empty string
*/
function __return_empty_string() {
return '';
}
/**
* Send a HTTP header to disable content type sniffing in browsers which support it.
*
* @link http://blogs.msdn.com/ie/archive/2008/07/02/ie8-security-part-v-comprehensive-protection.aspx
* @link http://src.chromium.org/viewvc/chrome?view=rev&revision=6985
*
* @since 3.0.0
* @return none
*/
function send_nosniff_header() {
@header( 'X-Content-Type-Options: nosniff' );
}
/**
* Returns a MySQL expression for selecting the week number based on the start_of_week option.
*
* @internal
* @since 3.0.0
* @param string $column
* @return string
*/
function _wp_mysql_week( $column ) {
switch ( $start_of_week = (int) get_option( 'start_of_week' ) ) {
default :
case 0 :
return "WEEK( $column, 0 )";
case 1 :
return "WEEK( $column, 1 )";
case 2 :
case 3 :
case 4 :
case 5 :
case 6 :
return "WEEK( DATE_SUB( $column, INTERVAL $start_of_week DAY ), 0 )";
}
}
/**
* Finds hierarchy loops using a callback function that maps object IDs to parent IDs.
*
* @since 3.1.0
* @access private
*
* @param callback $callback function that accepts ( ID, $callback_args ) and outputs parent_ID
* @param int $start The ID to start the loop check at
* @param int $start_parent the parent_ID of $start to use instead of calling $callback( $start ). Use null to always use $callback
* @param array $callback_args optional additional arguments to send to $callback
* @return array IDs of all members of loop
*/
function wp_find_hierarchy_loop( $callback, $start, $start_parent, $callback_args = array() ) {
$override = is_null( $start_parent ) ? array() : array( $start => $start_parent );
if ( !$arbitrary_loop_member = wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override, $callback_args ) )
return array();
return wp_find_hierarchy_loop_tortoise_hare( $callback, $arbitrary_loop_member, $override, $callback_args, true );
}
/**
* Uses the "The Tortoise and the Hare" algorithm to detect loops.
*
* For every step of the algorithm, the hare takes two steps and the tortoise one.
* If the hare ever laps the tortoise, there must be a loop.
*
* @since 3.1.0
* @access private
*
* @param callback $callback function that accepts ( ID, callback_arg, ... ) and outputs parent_ID
* @param int $start The ID to start the loop check at
* @param array $override an array of ( ID => parent_ID, ... ) to use instead of $callback
* @param array $callback_args optional additional arguments to send to $callback
* @param bool $_return_loop Return loop members or just detect presence of loop?
* Only set to true if you already know the given $start is part of a loop
* (otherwise the returned array might include branches)
* @return mixed scalar ID of some arbitrary member of the loop, or array of IDs of all members of loop if $_return_loop
*/
function wp_find_hierarchy_loop_tortoise_hare( $callback, $start, $override = array(), $callback_args = array(), $_return_loop = false ) {
$tortoise = $hare = $evanescent_hare = $start;
$return = array();
// Set evanescent_hare to one past hare
// Increment hare two steps
while (
$tortoise
&&
( $evanescent_hare = isset( $override[$hare] ) ? $override[$hare] : call_user_func_array( $callback, array_merge( array( $hare ), $callback_args ) ) )
&&
( $hare = isset( $override[$evanescent_hare] ) ? $override[$evanescent_hare] : call_user_func_array( $callback, array_merge( array( $evanescent_hare ), $callback_args ) ) )
) {
if ( $_return_loop )
$return[$tortoise] = $return[$evanescent_hare] = $return[$hare] = true;
// tortoise got lapped - must be a loop
if ( $tortoise == $evanescent_hare || $tortoise == $hare )
return $_return_loop ? $return : $tortoise;
// Increment tortoise by one step
$tortoise = isset( $override[$tortoise] ) ? $override[$tortoise] : call_user_func_array( $callback, array_merge( array( $tortoise ), $callback_args ) );
}
return false;
}
/**
* Send a HTTP header to limit rendering of pages to same origin iframes.
*
* @link https://developer.mozilla.org/en/the_x-frame-options_response_header
*
* @since 3.1.3
* @return none
*/
function send_frame_options_header() {
@header( 'X-Frame-Options: SAMEORIGIN' );
}
/**
* Retrieve a list of protocols to allow in HTML attributes.
*
* @since 3.3.0
* @see wp_kses()
* @see esc_url()
*
* @return array Array of allowed protocols
*/
function wp_allowed_protocols() {
static $protocols;
if ( empty( $protocols ) ) {
$protocols = array( 'http', 'https', 'ftp', 'ftps', 'mailto', 'news', 'irc', 'gopher', 'nntp', 'feed', 'telnet', 'mms', 'rtsp', 'svn', 'tel', 'fax', 'xmpp' );
$protocols = apply_filters( 'kses_allowed_protocols', $protocols );
}
return $protocols;
}
/**
* Return a comma separated string of functions that have been called to get to the current point in code.
*
* @link http://core.trac.wordpress.org/ticket/19589
* @since 3.4
*
* @param string $ignore_class A class to ignore all function calls within - useful when you want to just give info about the callee
* @param int $skip_frames A number of stack frames to skip - useful for unwinding back to the source of the issue
* @param bool $pretty Whether or not you want a comma separated string or raw array returned
* @return string|array Either a string containing a reversed comma separated trace or an array of individual calls.
*/
function wp_debug_backtrace_summary( $ignore_class = null, $skip_frames = 0, $pretty = true ) {
if ( version_compare( PHP_VERSION, '5.2.5', '>=' ) )
$trace = debug_backtrace( false );
else
$trace = debug_backtrace();
$caller = array();
$check_class = ! is_null( $ignore_class );
$skip_frames++; // skip this function
foreach ( $trace as $call ) {
if ( $skip_frames > 0 ) {
$skip_frames--;
} elseif ( isset( $call['class'] ) ) {
if ( $check_class && $ignore_class == $call['class'] )
continue; // Filter out calls
$caller[] = "{$call['class']}{$call['type']}{$call['function']}";
} else {
if ( in_array( $call['function'], array( 'do_action', 'apply_filters' ) ) ) {
$caller[] = "{$call['function']}('{$call['args'][0]}')";
} elseif ( in_array( $call['function'], array( 'include', 'include_once', 'require', 'require_once' ) ) ) {
$caller[] = $call['function'] . "('" . str_replace( array( WP_CONTENT_DIR, ABSPATH ) , '', $call['args'][0] ) . "')";
} else {
$caller[] = $call['function'];
}
}
}
if ( $pretty )
return join( ', ', array_reverse( $caller ) );
else
return $caller;
}
/**
* Retrieve ids that are not already present in the cache
*
* @since 3.4.0
*
* @param array $object_ids ID list
* @param string $cache_key The cache bucket to check against
*
* @return array
*/
function _get_non_cached_ids( $object_ids, $cache_key ) {
$clean = array();
foreach ( $object_ids as $id ) {
$id = (int) $id;
if ( !wp_cache_get( $id, $cache_key ) ) {
$clean[] = $id;
}
}
return $clean;
}
/**
* Test if the current device has the capability to upload files.
*
* @since 3.4.0
* @access private
*
* @return bool true|false
*/
function _device_can_upload() {
if ( ! wp_is_mobile() )
return true;
$ua = $_SERVER['HTTP_USER_AGENT'];
if ( strpos($ua, 'iPhone') !== false
|| strpos($ua, 'iPad') !== false
|| strpos($ua, 'iPod') !== false ) {
return preg_match( '#OS ([\d_]+) like Mac OS X#', $ua, $version ) && version_compare( $version[1], '6', '>=' );
}
return true;
}
/**
* Test if a given path is a stream URL
*
* @param string $path The resource path or URL
* @return bool True if the path is a stream URL
*/
function wp_is_stream( $path ) {
$wrappers = stream_get_wrappers();
$wrappers_re = '(' . join('|', $wrappers) . ')';
return preg_match( "!^$wrappers_re://!", $path ) === 1;
}
/**
* Test if the supplied date is valid for the Gregorian calendar
*
* @since 3.5.0
*
* @return bool true|false
*/
function wp_checkdate( $month, $day, $year, $source_date ) {
return apply_filters( 'wp_checkdate', checkdate( $month, $day, $year ), $source_date );
}
/**
* Load the auth check for monitoring whether the user is still logged in.
*
* Can be disabled with remove_action( 'admin_enqueue_scripts', 'wp_auth_check_load' );
*
* This is disabled for certain screens where a login screen could cause an
* inconvenient interruption. A filter called wp_auth_check_load can be used
* for fine-grained control.
*
* @since 3.6.0
*/
function wp_auth_check_load() {
if ( ! is_admin() && ! is_user_logged_in() )
return;
if ( defined( 'IFRAME_REQUEST' ) )
return;
$screen = get_current_screen();
$hidden = array( 'update', 'update-network', 'update-core', 'update-core-network', 'upgrade', 'upgrade-network', 'network' );
$show = ! in_array( $screen->id, $hidden );
if ( apply_filters( 'wp_auth_check_load', $show, $screen ) ) {
wp_enqueue_style( 'wp-auth-check' );
wp_enqueue_script( 'wp-auth-check' );
add_action( 'admin_print_footer_scripts', 'wp_auth_check_html', 5 );
add_action( 'wp_print_footer_scripts', 'wp_auth_check_html', 5 );
}
}
/**
* Output the HTML that shows the wp-login dialog when the user is no longer logged in.
*
* @since 3.6.0
*/
function wp_auth_check_html() {
$login_url = wp_login_url();
$current_domain = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'];
$same_domain = ( strpos( $login_url, $current_domain ) === 0 );
if ( $same_domain && force_ssl_login() && ! force_ssl_admin() )
$same_domain = false;
// Let plugins change this if they know better.
$same_domain = apply_filters( 'wp_auth_check_same_domain', $same_domain );
$wrap_class = $same_domain ? 'hidden' : 'hidden fallback';
?>
[\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) );
}
/**
* Return a canonical form of the provided charset appropriate for passing to PHP
* functions such as htmlspecialchars() and charset html attributes.
*
* @link http://core.trac.wordpress.org/ticket/23688
* @since 3.6.0
*
* @param string A charset name
* @return string The canonical form of the charset
*/
function _canonical_charset( $charset ) {
if ( 'UTF-8' === $charset || 'utf-8' === $charset || 'utf8' === $charset ||
'UTF8' === $charset )
return 'UTF-8';
if ( 'ISO-8859-1' === $charset || 'iso-8859-1' === $charset ||
'iso8859-1' === $charset || 'ISO8859-1' === $charset )
return 'ISO-8859-1';
return $charset;
}
/**
* Sets the mbstring internal encoding to a binary safe encoding whne func_overload is enabled.
*
* When mbstring.func_overload is in use for multi-byte encodings, the results from strlen() and
* similar functions respect the utf8 characters, causing binary data to return incorrect lengths.
*
* This function overrides the mbstring encoding to a binary-safe encoding, and resets it to the
* users expected encoding afterwards through the `reset_mbstring_encoding` function.
*
* It is safe to recursively call this function, however each `mbstring_binary_safe_encoding()`
* call must be followed up with an equal number of `reset_mbstring_encoding()` calls.
*
* @see reset_mbstring_encoding()
*
* @since 3.7.0
*
* @param bool $reset Whether to reset the encoding back to a previously-set encoding.
*/
function mbstring_binary_safe_encoding( $reset = false ) {
static $encodings = array();
static $overloaded = null;
if ( is_null( $overloaded ) )
$overloaded = function_exists( 'mb_internal_encoding' ) && ( ini_get( 'mbstring.func_overload' ) & 2 );
if ( false === $overloaded )
return;
if ( ! $reset ) {
$encoding = mb_internal_encoding();
array_push( $encodings, $encoding );
mb_internal_encoding( 'ISO-8859-1' );
}
if ( $reset && $encodings ) {
$encoding = array_pop( $encodings );
mb_internal_encoding( $encoding );
}
}
/**
* Resets the mbstring internal encoding to a users previously set encoding.
*
* @see mbstring_binary_safe_encoding()
*
* @since 3.7.0
*/
function reset_mbstring_encoding() {
mbstring_binary_safe_encoding( true );
}