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. * @return bool False if not serialized and true if it was. */ 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; $length = strlen( $data ); if ( $length < 4 ) return false; if ( ':' !== $data[1] ) return false; $lastc = $data[$length-1]; if ( ';' !== $lastc && '}' !== $lastc ) return false; $token = $data[0]; switch ( $token ) { case 's' : if ( '"' !== $data[$length-2] ) return false; case 'a' : case 'O' : return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data ); case 'b' : case 'i' : case 'd' : return (bool) preg_match( "/^{$token}:[0-9.E-]+;\$/", $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 ) ) 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( '/(.+?)<\/title>/is', $content, $matchtitle ) ) { $post_title = $matchtitle[1]; } else { $post_title = $post_default_title; } return $post_title; } /** * Retrieve the post category or categories from XMLRPC XML. * * If the category element is not found, then the default post category will be * used. The return type then would be what $post_default_category. If the * category is found, then it will always be an array. * * @package WordPress * @subpackage XMLRPC * @since 0.71 * * @global string $post_default_category Default XMLRPC post category. * * @param string $content XMLRPC XML Request content * @return string|array List of categories or category name. */ 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; } /** * XMLRPC XML content without title and category elements. * * @package WordPress * @subpackage XMLRPC * @since 0.71 * * @param string $content XMLRPC XML Request content * @return string XMLRPC XML Request content without title and category elements. */ function xmlrpc_removepostdata( $content ) { $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content ); $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content ); $content = trim( $content ); return $content; } /** * Check content for video and audio links to add as enclosures. * * Will not add enclosures that have already been added and will * remove enclosures that are no longer in the post. This is called as * pingbacks and trackbacks. * * @package WordPress * @since 1.5.0 * * @uses $wpdb * * @param string $content Post Content * @param int $post_ID Post ID */ function do_enclose( $content, $post_ID ) { global $wpdb; //TODO: Tidy this ghetto code up and make the debug code optional include_once( ABSPATH . WPINC . '/class-IXR.php' ); $post_links = array(); $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 ); foreach ( $pung as $link_test ) { if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post $mids = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, like_escape( $link_test ) . '%') ); foreach ( $mids as $mid ) delete_metadata_by_mid( 'post', $mid ); } } foreach ( (array) $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 ( false === $test ) continue; if ( isset( $test['query'] ) ) $post_links[] = $link_test; elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) ) $post_links[] = $link_test; } } foreach ( (array) $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, like_escape( $url ) . '%' ) ) ) { if ( $headers = wp_get_http_headers( $url) ) { $len = isset( $headers['content-length'] ) ? (int) $headers['content-length'] : 0; $type = isset( $headers['content-type'] ) ? $headers['content-type'] : ''; $allowed_types = array( 'video', 'audio' ); // Check to see if we can figure out the mime type from // the extension $url_parts = @parse_url( $url ); if ( false !== $url_parts ) { $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION ); if ( !empty( $extension ) ) { foreach ( wp_get_mime_types() as $exts => $mime ) { if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) { $type = $mime; break; } } } } if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) { add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" ); } } } } } /** * 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. * * @since 2.5.0 * * @param string $url URL to fetch. * @param string|bool $file_path Optional. File path to write request to. * @param int $red (private) The number of Redirects followed, Upon 5 being hit, returns false. * @return bool|string False on failure and string of headers if HEAD request. */ function wp_get_http( $url, $file_path = false, $red = 1 ) { @set_time_limit( 60 ); if ( $red > 5 ) return false; $options = array(); $options['redirection'] = 5; if ( false == $file_path ) $options['method'] = 'HEAD'; else $options['method'] = 'GET'; $response = wp_remote_request($url, $options); if ( is_wp_error( $response ) ) return false; $headers = wp_remote_retrieve_headers( $response ); $headers['response'] = wp_remote_retrieve_response_code( $response ); // WP_HTTP no longer follows redirects for HEAD requests. if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) { return wp_get_http( $headers['location'], $file_path, ++$red ); } if ( false == $file_path ) return $headers; // GET request - write it to the supplied filename $out_fp = fopen($file_path, 'w'); if ( !$out_fp ) return $headers; fwrite( $out_fp, wp_remote_retrieve_body( $response ) ); fclose($out_fp); clearstatcache(); return $headers; } /** * Retrieve HTTP Headers from URL. * * @since 1.5.1 * * @param string $url * @param bool $deprecated Not Used. * @return bool|string False on failure, headers on success. */ function wp_get_http_headers( $url, $deprecated = false ) { if ( !empty( $deprecated ) ) _deprecated_argument( __FUNCTION__, '2.7' ); $response = wp_remote_head( $url ); if ( is_wp_error( $response ) ) return false; return wp_remote_retrieve_headers( $response ); } /** * Whether today is a new day. * * @since 0.71 * @uses $day Today * @uses $previousday Previous day * * @return int 1 when new day, 0 if not a new day. */ function is_new_day() { global $currentday, $previousday; if ( $currentday != $previousday ) return 1; else return 0; } /** * Build URL query based on an associative and, or indexed array. * * This is a convenient function for easily building url queries. It sets the * separator to '&' and uses _http_build_query() function. * * @see _http_build_query() Used to build the query * @link http://us2.php.net/manual/en/function.http-build-query.php more on what * http_build_query() does. * * @since 2.3.0 * * @param array $data URL-encode key/value pairs. * @return string URL encoded string */ function build_query( $data ) { return _http_build_query( $data, null, '&', '', false ); } // from php.net (modified by Mark Jaquith to behave like the native PHP5 function) function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) { $ret = array(); foreach ( (array) $data as $k => $v ) { if ( $urlencode) $k = urlencode($k); if ( is_int($k) && $prefix != null ) $k = $prefix.$k; if ( !empty($key) ) $k = $key . '%5B' . $k . '%5D'; if ( $v === null ) continue; elseif ( $v === FALSE ) $v = '0'; if ( is_array($v) || is_object($v) ) array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode)); elseif ( $urlencode ) array_push($ret, $k.'='.urlencode($v)); else array_push($ret, $k.'='.$v); } if ( null === $sep ) $sep = ini_get('arg_separator.output'); return implode($sep, $ret); } /** * Retrieve a modified URL query string. * * You can rebuild the URL and append a new query variable to the URL query by * using this function. You can also retrieve the full URL with query data. * * Adding a single key & value or an associative array. Setting a key value to * an empty string removes the key. Omitting oldquery_or_uri uses the $_SERVER * value. Additional values provided are expected to be encoded appropriately * with urlencode() or rawurlencode(). * * @since 1.5.0 * * @param mixed $param1 Either newkey or an associative_array * @param mixed $param2 Either newvalue or oldquery or uri * @param mixed $param3 Optional. Old query or uri * @return string New URL query string. */ function add_query_arg() { $ret = ''; $args = func_get_args(); if ( is_array( $args[0] ) ) { if ( count( $args ) < 2 || false === $args[1] ) $uri = $_SERVER['REQUEST_URI']; else $uri = $args[1]; } else { if ( count( $args ) < 3 || false === $args[2] ) $uri = $_SERVER['REQUEST_URI']; else $uri = $args[2]; } if ( $frag = strstr( $uri, '#' ) ) $uri = substr( $uri, 0, -strlen( $frag ) ); else $frag = ''; if ( 0 === stripos( 'http://', $uri ) ) { $protocol = 'http://'; $uri = substr( $uri, 7 ); } elseif ( 0 === stripos( 'https://', $uri ) ) { $protocol = 'https://'; $uri = substr( $uri, 8 ); } 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 ( $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( $args[0] ) ) { $kayvees = $args[0]; $qs = array_merge( $qs, $kayvees ); } else { $qs[ $args[0] ] = $args[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; } /** * Removes an item or list from the query string. * * @since 1.5.0 * * @param string|array $key Query key or keys to remove. * @param bool $query When false uses the $_SERVER value. * @return string New URL query string. */ function remove_query_arg( $key, $query=false ) { if ( is_array( $key ) ) { // removing multiple keys foreach ( $key as $k ) $query = add_query_arg( $k, false, $query ); return $query; } return add_query_arg( $key, false, $query ); } /** * Walks the array while sanitizing the contents. * * @since 0.71 * * @param array $array Array to used to walk while sanitizing contents. * @return array Sanitized $array. */ function add_magic_quotes( $array ) { foreach ( (array) $array as $k => $v ) { if ( is_array( $v ) ) { $array[$k] = add_magic_quotes( $v ); } else { $array[$k] = addslashes( $v ); } } return $array; } /** * HTTP request for URI to retrieve content. * * @since 1.5.1 * @uses wp_remote_get() * * @param string $uri URI/URL of web page to retrieve. * @return bool|string HTTP content. False on failure. */ function wp_remote_fopen( $uri ) { $parsed_url = @parse_url( $uri ); if ( !$parsed_url || !is_array( $parsed_url ) ) return false; $options = array(); $options['timeout'] = 10; $response = wp_remote_get( $uri, $options ); if ( is_wp_error( $response ) ) return false; return wp_remote_retrieve_body( $response ); } /** * Set up the WordPress query. * * @since 2.0.0 * * @param string $query_vars Default WP_Query arguments. */ 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; } /** * Retrieve the description for the HTTP status. * * @since 2.3.0 * * @param int $code HTTP status code. * @return string Empty string if not found, or description if found. */ 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', 102 => 'Processing', 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 207 => 'Multi-Status', 226 => 'IM Used', 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 306 => 'Reserved', 307 => 'Temporary Redirect', 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 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', 422 => 'Unprocessable Entity', 423 => 'Locked', 424 => 'Failed Dependency', 426 => 'Upgrade Required', 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', 505 => 'HTTP Version Not Supported', 506 => 'Variant Also Negotiates', 507 => 'Insufficient Storage', 510 => 'Not Extended' ); } if ( isset( $wp_header_to_desc[$code] ) ) return $wp_header_to_desc[$code]; else return ''; } /** * Set HTTP status header. * * @since 2.0.0 * @uses apply_filters() Calls 'status_header' on status header string, HTTP * HTTP code, HTTP code description, and protocol string as separate * parameters. * * @param int $header HTTP status code * @return unknown */ 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 ); return @header( $status_header, true, $header ); } /** * Gets the header information to prevent caching. * * The several different headers cover the different ways cache prevention is handled * by different browsers * * @since 2.8.0 * * @uses apply_filters() * @return array The associative array of header names and field values. */ function wp_get_nocache_headers() { $headers = array( 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT', 'Cache-Control' => 'no-cache, must-revalidate, max-age=0', 'Pragma' => 'no-cache', ); if ( function_exists('apply_filters') ) { $headers = (array) apply_filters('nocache_headers', $headers); } $headers['Last-Modified'] = false; return $headers; } /** * Sets the headers to prevent caching for the different browsers. * * Different browsers support different nocache headers, so several headers must * be sent so that all of them get the point that no caching should occur. * * @since 2.0.0 * @uses wp_get_nocache_headers() */ function nocache_headers() { $headers = wp_get_nocache_headers(); unset( $headers['Last-Modified'] ); // In PHP 5.3+, make sure we are not sending a Last-Modified header. if ( function_exists( 'header_remove' ) ) { @header_remove( 'Last-Modified' ); } else { // In PHP 5.2, send an empty Last-Modified header, but only as a // last resort to override a header already sent. #WP23021 foreach ( headers_list() as $header ) { if ( 0 === stripos( $header, 'Last-Modified' ) ) { $headers['Last-Modified'] = ''; break; } } } foreach( $headers as $name => $field_value ) @header("{$name}: {$field_value}"); } /** * Set the headers for caching for 10 days with JavaScript content type. * * @since 2.1.0 */ function cache_javascript_headers() { $expiresOffset = 10 * DAY_IN_SECONDS; 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" ); } /** * Retrieve the number of database queries during the WordPress execution. * * @since 2.0.0 * * @return int Number of database queries */ function get_num_queries() { global $wpdb; return $wpdb->num_queries; } /** * Whether input is yes or no. Must be 'y' to be true. * * @since 1.0.0 * * @param string $yn Character string containing either 'y' or 'n' * @return bool True if yes, false on anything else */ function bool_from_yn( $yn ) { return ( strtolower( $yn ) == 'y' ); } /** * Loads the feed template from the use of an action hook. * * If the feed action does not have a hook, then the function will die with a * message telling the visitor that the feed is not valid. * * It is better to only have one hook for each feed. * * @since 2.1.0 * @uses $wp_query Used to tell if the use a comment feed. * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed. */ 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) ) { $message = sprintf( __( 'ERROR: %s is not a valid feed template.' ), esc_html($feed)); wp_die( $message, '', array( 'response' => 404 ) ); } do_action( $hook, $wp_query->is_comment_feed ); } /** * Load the RDF RSS 0.91 Feed template. * * @since 2.1.0 */ function do_feed_rdf() { load_template( ABSPATH . WPINC . '/feed-rdf.php' ); } /** * Load the RSS 1.0 Feed Template. * * @since 2.1.0 */ function do_feed_rss() { load_template( ABSPATH . WPINC . '/feed-rss.php' ); } /** * Load either the RSS2 comment feed or the RSS2 posts feed. * * @since 2.1.0 * * @param bool $for_comments True for the comment feed, false for normal feed. */ 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' ); } /** * Load either Atom comment feed or Atom posts feed. * * @since 2.1.0 * * @param bool $for_comments True for the comment feed, false for normal feed. */ 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' ); } /** * Display the robots.txt file content. * * The echo content should be with usage of the permalinks or for creating the * robots.txt file. * * @since 2.1.0 * @uses do_action() Calls 'do_robotstxt' hook for displaying robots.txt rules. */ function do_robots() { header( 'Content-Type: text/plain; charset=utf-8' ); do_action( 'do_robotstxt' ); $output = "User-agent: *\n"; $public = get_option( 'blog_public' ); if ( '0' == $public ) { $output .= "Disallow: /\n"; } else { $site_url = parse_url( site_url() ); $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : ''; $output .= "Disallow: $path/wp-admin/\n"; $output .= "Disallow: $path/wp-includes/\n"; } echo apply_filters('robots_txt', $output, $public); } /** * Test whether blog is already installed. * * The cache will be checked first. If you have a cache plugin, which saves the * cache values, then this will work. If you use the default WordPress cache, * and the database goes away, then you might have problems. * * Checks for the option siteurl for whether WordPress is installed. * * @since 2.1.0 * @uses $wpdb * * @return bool Whether blog is already installed. */ 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; $suppress = $wpdb->suppress_errors(); if ( ! defined( 'WP_INSTALLING' ) ) { $alloptions = wp_load_alloptions(); } // If siteurl is not set to autoload, check it specifically if ( !isset( $alloptions['siteurl'] ) ) $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" ); else $installed = $alloptions['siteurl']; $wpdb->suppress_errors( $suppress ); $installed = !empty( $installed ); wp_cache_set( 'is_blog_installed', $installed ); if ( $installed ) return true; // If visiting repair.php, return true and let it take over. if ( defined( 'WP_REPAIRING' ) ) return true; $suppress = $wpdb->suppress_errors(); // Loop over the WP tables. If none exist, then scratch install is allowed. // If one or more exist, suggest table repair since we got here because the options // table could not be accessed. $wp_tables = $wpdb->tables(); foreach ( $wp_tables as $table ) { // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install. if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table ) continue; if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table ) continue; if ( ! $wpdb->get_results( "DESCRIBE $table;" ) ) continue; // One or more tables exist. We are insane. wp_load_translations_early(); // Die with a DB error. $wpdb->error = sprintf( __( 'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.' ), 'maint/repair.php?referrer=is_blog_installed' ); dead_db(); } $wpdb->suppress_errors( $suppress ); wp_cache_set( 'is_blog_installed', false ); return false; } /** * Retrieve URL with nonce added to URL query. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @param string $actionurl URL to add nonce action * @param string $action Optional. Nonce action name * @return string URL with nonce action added. */ function wp_nonce_url( $actionurl, $action = -1 ) { $actionurl = str_replace( '&', '&', $actionurl ); return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) ); } /** * Retrieve or display nonce hidden field for forms. * * The nonce field is used to validate that the contents of the form came from * the location on the current site and not somewhere else. The nonce does not * offer absolute protection, but should protect against most cases. It is very * important to use nonce field in forms. * * The $action and $name are optional, but if you want to have better security, * it is strongly suggested to set those two parameters. It is easier to just * call the function without any parameters, because validation of the nonce * doesn't require any parameters, but since crackers know what the default is * it won't be difficult for them to find a way around your nonce and cause * damage. * * The input name will be whatever $name value you gave. The input value will be * the nonce creation value. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @param string $action Optional. Action name. * @param string $name Optional. Nonce name. * @param bool $referer Optional, default true. Whether to set the referer field for validation. * @param bool $echo Optional, default true. Whether to display or return hidden form field. * @return string Nonce field. */ function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) { $name = esc_attr( $name ); $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />'; if ( $referer ) $nonce_field .= wp_referer_field( false ); if ( $echo ) echo $nonce_field; return $nonce_field; } /** * Retrieve or display referer hidden field for forms. * * The referer link is the current Request URI from the server super global. The * input name is '_wp_http_referer', in case you wanted to check manually. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @param bool $echo Whether to echo or return the referer field. * @return string Referer field. */ function wp_referer_field( $echo = true ) { $ref = esc_attr( $_SERVER['REQUEST_URI'] ); $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />'; if ( $echo ) echo $referer_field; return $referer_field; } /** * Retrieve or display original referer hidden field for forms. * * The input name is '_wp_original_http_referer' and will be either the same * value of {@link wp_referer_field()}, if that was posted already or it will * be the current page, if it doesn't exist. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @param bool $echo Whether to echo the original http referer * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to. * @return string Original referer field. */ function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) { $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI']; $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to; $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />'; if ( $echo ) echo $orig_referer_field; return $orig_referer_field; } /** * Retrieve referer from '_wp_http_referer' or HTTP referer. If it's the same * as the current request URL, will return false. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @return string|bool False on failure. Referer URL on success. */ function wp_get_referer() { $ref = false; if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) $ref = $_REQUEST['_wp_http_referer']; else if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) $ref = $_SERVER['HTTP_REFERER']; if ( $ref && $ref !== $_SERVER['REQUEST_URI'] ) return $ref; return false; } /** * Retrieve original referer that was posted, if it exists. * * @package WordPress * @subpackage Security * @since 2.0.4 * * @return string|bool False if no original referer or original referer if set. */ function wp_get_original_referer() { if ( !empty( $_REQUEST['_wp_original_http_referer'] ) ) return $_REQUEST['_wp_original_http_referer']; return false; } /** * Recursive directory creation based on full path. * * Will attempt to set permissions on folders. * * @since 2.0.1 * * @param string $target Full path to attempt to create. * @return bool Whether the path was created. True if path already exists. */ function wp_mkdir_p( $target ) { $wrapper = null; // strip the protocol if( wp_is_stream( $target ) ) { list( $wrapper, $target ) = explode( '://', $target, 2 ); } // from php.net/mkdir user contributed notes $target = str_replace( '//', '/', $target ); // put the wrapper back on the target if( $wrapper !== null ) { $target = $wrapper . '://' . $target; } // safe mode fails with a trailing slash under certain PHP versions. $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency. if ( empty($target) ) $target = '/'; 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 ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) ) return wp_mkdir_p( $target ); return false; } /** * Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows'). * * @since 2.5.0 * * @param string $path File path * @return bool True if path is absolute, false is not absolute. */ 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 ( $path[0] == '/' || $path[0] == '\\' ); } /** * Join two filesystem paths together (e.g. 'give me $path relative to $base'). * * If the $path is absolute, then it the full path is returned. * * @since 2.5.0 * * @param string $base * @param string $path * @return string The path with the base or absolute path. */ function path_join( $base, $path ) { if ( path_is_absolute($path) ) return $path; return rtrim($base, '/') . '/' . ltrim($path, '/'); } /** * Determines a writable directory for temporary files. * Function's preference is the return value of <code>sys_get_temp_dir()</code>, * 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 <code>WP_TEMP_DIR</code> constant in * your <code>wp-config.php</code> 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_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 ) { $ext2type = apply_filters( 'ext2type', array( '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; } /** * 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|wax|wmv|wmx' => 'video/asf', '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/wma', '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', ) ); } /** * 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 * * @return array Array of mime types keyed by the file extension regex corresponding to those types. */ function get_allowed_mime_types() { return apply_filters( 'upload_mimes', wp_get_mime_types() ); } /** * 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' ) ) . '</p><p>'; $html .= sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() ); } else { $html = __( 'Are you sure you want to do this?' ); if ( wp_get_referer() ) $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>"; } 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 : $message = "<p>{$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 ( isset( $r['back_link'] ) && $r['back_link'] ) { $back_text = $have_gettext? __('« Back') : '« Back'; $message .= "\n<p><a href='javascript:history.back()'>$back_text</a></p>"; } 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() ) $text_direction = 'rtl'; ?> <!DOCTYPE html> <!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono --> <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title><?php echo $title ?> 500 ); $r = wp_parse_args($args, $defaults); if ( $wp_xmlrpc_server ) { $error = new IXR_Error( $r['response'] , $message); $wp_xmlrpc_server->output( $error->getXml() ); } die(); } /** * Kill WordPress ajax execution. * * This is the handler for wp_die when processing Ajax requests. * * @since 3.4.0 * @access private * * @param string $message Optional. Response to print. */ function _ajax_wp_die_handler( $message = '' ) { if ( is_scalar( $message ) ) die( (string) $message ); die( '0' ); } /** * Kill WordPress execution. * * This is the handler for wp_die when processing APP requests. * * @since 3.4.0 * @access private * * @param string $message Optional. Response to print. */ function _scalar_wp_die_handler( $message = '' ) { if ( is_scalar( $message ) ) die( (string) $message ); die(); } /** * Send a JSON response back to an Ajax request. * * @since 3.5.0 * * @param mixed $response Variable (usually an array or object) to encode as JSON, then print and die. */ function wp_send_json( $response ) { @header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) ); echo json_encode( $response ); if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) wp_die(); else die; } /** * Send a JSON response back to an Ajax request, indicating success. * * @since 3.5.0 * * @param mixed $data Data to encode as JSON, then print and die. */ function wp_send_json_success( $data = null ) { $response = array( 'success' => true ); if ( isset( $data ) ) $response['data'] = $data; wp_send_json( $response ); } /** * Send a JSON response back to an Ajax request, indicating failure. * * @since 3.5.0 * * @param mixed $data Data to encode as JSON, then print and die. */ function wp_send_json_error( $data = null ) { $response = array( 'success' => false ); if ( isset( $data ) ) $response['data'] = $data; wp_send_json( $response ); } /** * Retrieve the WordPress home page URL. * * If the constant named 'WP_HOME' exists, then it will be used and returned by * the function. This can be used to counter the redirection on your local * development environment. * * @access private * @package WordPress * @since 2.2.0 * * @param string $url URL for the home location * @return string Homepage location. */ function _config_wp_home( $url = '' ) { if ( defined( 'WP_HOME' ) ) return untrailingslashit( WP_HOME ); return $url; } /** * Retrieve the WordPress site URL. * * If the constant named 'WP_SITEURL' is defined, then the value in that * constant will always be returned. This can be used for debugging a site on * your localhost while not having to change the database to your URL. * * @access private * @package WordPress * @since 2.2.0 * * @param string $url URL to set the WordPress site location. * @return string The WordPress Site URL */ function _config_wp_siteurl( $url = '' ) { if ( defined( 'WP_SITEURL' ) ) return untrailingslashit( WP_SITEURL ); return $url; } /** * Set the localized direction for MCE plugin. * * Will only set the direction to 'rtl', if the WordPress locale has the text * direction set to 'rtl'. * * Fills in the 'directionality', 'plugins', and 'theme_advanced_button1' array * keys. These keys are then returned in the $input array. * * @access private * @package WordPress * @subpackage MCE * @since 2.1.0 * * @param array $input MCE plugin array. * @return array Direction set for 'rtl', if needed by locale. */ function _mce_set_direction( $input ) { if ( is_rtl() ) { $input['directionality'] = 'rtl'; $input['plugins'] .= ',directionality'; $input['theme_advanced_buttons1'] .= ',ltr'; } return $input; } /** * Convert smiley code to the icon graphic file equivalent. * * You can turn off smilies, by going to the write setting screen and unchecking * the box, or by setting 'use_smilies' option to false or removing the option. * * Plugins may override the default smiley list by setting the $wpsmiliestrans * to an array, with the key the code the blogger types in and the value the * image file. * * The $wp_smiliessearch global is for the regular expression and is set each * time the function is called. * * The full list of smilies can be found in the function and won't be listed in * the description. Probably should create a Codex page for it, so that it is * available. * * @global array $wpsmiliestrans * @global array $wp_smiliessearch * @since 2.2.0 */ function smilies_init() { global $wpsmiliestrans, $wp_smiliessearch; // don't bother setting up smilies if they are disabled if ( !get_option( 'use_smilies' ) ) return; if ( !isset( $wpsmiliestrans ) ) { $wpsmiliestrans = array( ':mrgreen:' => 'icon_mrgreen.gif', ':neutral:' => 'icon_neutral.gif', ':twisted:' => 'icon_twisted.gif', ':arrow:' => 'icon_arrow.gif', ':shock:' => 'icon_eek.gif', ':smile:' => 'icon_smile.gif', ':???:' => 'icon_confused.gif', ':cool:' => 'icon_cool.gif', ':evil:' => 'icon_evil.gif', ':grin:' => 'icon_biggrin.gif', ':idea:' => 'icon_idea.gif', ':oops:' => 'icon_redface.gif', ':razz:' => 'icon_razz.gif', ':roll:' => 'icon_rolleyes.gif', ':wink:' => 'icon_wink.gif', ':cry:' => 'icon_cry.gif', ':eek:' => 'icon_surprised.gif', ':lol:' => 'icon_lol.gif', ':mad:' => 'icon_mad.gif', ':sad:' => 'icon_sad.gif', '8-)' => 'icon_cool.gif', '8-O' => 'icon_eek.gif', ':-(' => 'icon_sad.gif', ':-)' => 'icon_smile.gif', ':-?' => 'icon_confused.gif', ':-D' => 'icon_biggrin.gif', ':-P' => 'icon_razz.gif', ':-o' => 'icon_surprised.gif', ':-x' => 'icon_mad.gif', ':-|' => 'icon_neutral.gif', ';-)' => 'icon_wink.gif', // This one transformation breaks regular text with frequency. // '8)' => 'icon_cool.gif', '8O' => 'icon_eek.gif', ':(' => 'icon_sad.gif', ':)' => 'icon_smile.gif', ':?' => 'icon_confused.gif', ':D' => 'icon_biggrin.gif', ':P' => 'icon_razz.gif', ':o' => 'icon_surprised.gif', ':x' => 'icon_mad.gif', ':|' => 'icon_neutral.gif', ';)' => 'icon_wink.gif', ':!:' => 'icon_exclaim.gif', ':?:' => 'icon_question.gif', ); } if (count($wpsmiliestrans) == 0) { return; } /* * NOTE: we sort the smilies in reverse key order. This is to make sure * we match the longest possible smilie (:???: vs :?) as the regular * expression used below is first-match */ krsort($wpsmiliestrans); $wp_smiliessearch = '/(?:\s|^)'; $subchar = ''; foreach ( (array) $wpsmiliestrans as $smiley => $img ) { $firstchar = substr($smiley, 0, 1); $rest = substr($smiley, 1); // new subpattern? if ($firstchar != $subchar) { if ($subchar != '') { $wp_smiliessearch .= ')|(?:\s|^)'; } $subchar = $firstchar; $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:'; } else { $wp_smiliessearch .= '|'; } $wp_smiliessearch .= preg_quote($rest, '/'); } $wp_smiliessearch .= ')(?:\s|$)/m'; } /** * Merge user defined arguments into defaults array. * * This function is used throughout WordPress to allow for both string or array * to be merged into another array. * * @since 2.2.0 * * @param string|array $args Value to merge with $defaults * @param array $defaults Array that serves as the defaults. * @return array Merged user defined values with defaults. */ 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; } /** * Clean up an array, comma- or space-separated list of IDs. * * @since 3.0.0 * * @param array|string $list * @return array Sanitized array of IDs */ function wp_parse_id_list( $list ) { if ( !is_array($list) ) $list = preg_split('/[\s,]+/', $list); return array_unique(array_map('absint', $list)); } /** * Extract a slice of an array, given a list of keys. * * @since 3.1.0 * * @param array $array The original array * @param array $keys The list of keys * @return array The array slice */ function wp_array_slice_assoc( $array, $keys ) { $slice = array(); foreach ( $keys as $key ) if ( isset( $array[ $key ] ) ) $slice[ $key ] = $array[ $key ]; return $slice; } /** * Filters a list of objects, based on a set of key => value arguments. * * @since 3.0.0 * * @param array $list An array of objects to filter * @param array $args An array of key => value arguments to match against each object * @param string $operator The logical operation to perform. 'or' means only one element * from the array needs to match; 'and' means all elements must match. The default is 'and'. * @param bool|string $field A field from the object to place instead of the entire object * @return array A list of objects or object fields */ function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) { if ( ! is_array( $list ) ) return array(); $list = wp_list_filter( $list, $args, $operator ); if ( $field ) $list = wp_list_pluck( $list, $field ); return $list; } /** * Filters a list of objects, based on a set of key => value arguments. * * @since 3.1.0 * * @param array $list An array of objects to filter * @param array $args An array of key => value arguments to match against each object * @param string $operator The logical operation to perform: * 'AND' means all elements from the array must match; * 'OR' means only one element needs to match; * 'NOT' means no elements may match. * The default is 'AND'. * @return array */ function wp_list_filter( $list, $args = array(), $operator = 'AND' ) { if ( ! is_array( $list ) ) return array(); if ( empty( $args ) ) return $list; $operator = strtoupper( $operator ); $count = count( $args ); $filtered = array(); foreach ( $list as $key => $obj ) { $to_match = (array) $obj; $matched = 0; foreach ( $args as $m_key => $m_value ) { if ( array_key_exists( $m_key, $to_match ) && $m_value == $to_match[ $m_key ] ) $matched++; } if ( ( 'AND' == $operator && $matched == $count ) || ( 'OR' == $operator && $matched > 0 ) || ( 'NOT' == $operator && 0 == $matched ) ) { $filtered[$key] = $obj; } } return $filtered; } /** * Pluck a certain field out of each object in a list. * * @since 3.1.0 * * @param array $list A list of objects or arrays * @param int|string $field A field from the object to place instead of the entire object * @return array */ function wp_list_pluck( $list, $field ) { foreach ( $list as $key => $value ) { if ( is_object( $value ) ) $list[ $key ] = $value->$field; else $list[ $key ] = $value[ $field ]; } return $list; } /** * Determines if Widgets library should be loaded. * * Checks to make sure that the widgets library hasn't already been loaded. If * it hasn't, then it will load the widgets library and run an action hook. * * @since 2.2.0 * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value. */ function wp_maybe_load_widgets() { if ( ! apply_filters('load_default_widgets', true) ) return; require_once( ABSPATH . WPINC . '/default-widgets.php' ); add_action( '_admin_menu', 'wp_widgets_add_menu' ); } /** * Append the Widgets menu to the themes main menu. * * @since 2.2.0 * @uses $submenu The administration submenu list. */ function wp_widgets_add_menu() { global $submenu; if ( ! current_theme_supports( 'widgets' ) ) return; $submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' ); ksort( $submenu['themes.php'], SORT_NUMERIC ); } /** * Flush all output buffers for PHP 5.2. * * Make sure all output buffers are flushed before our singletons our destroyed. * * @since 2.2.0 */ function wp_ob_end_flush_all() { $levels = ob_get_level(); for ($i=0; $i<$levels; $i++) ob_end_flush(); } /** * Load custom DB error or display WordPress DB error. * * If a file exists in the wp-content directory named db-error.php, then it will * be loaded instead of displaying the WordPress DB error. If it is not found, * then the WordPress DB error will be displayed instead. * * The WordPress DB error sets the HTTP status header to 500 to try to prevent * search engines from caching the message. Custom DB messages should do the * same. * * This function was backported to the the WordPress 2.3.2, but originally was * added in WordPress 2.5.0. * * @since 2.3.2 * @uses $wpdb */ function dead_db() { global $wpdb; // Load custom DB error template, if present. if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) { require_once( WP_CONTENT_DIR . '/db-error.php' ); die(); } // If installing or in the admin, provide the verbose message. if ( defined('WP_INSTALLING') || defined('WP_ADMIN') ) wp_die($wpdb->error); // Otherwise, be terse. status_header( 500 ); nocache_headers(); header( 'Content-Type: text/html; charset=utf-8' ); wp_load_translations_early(); ?> > <?php _e( 'Database Error' ); ?>

deprecated since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) ); else trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $function, $version ) ); } } /** * 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 a user error if WP_DEBUG is true. * * This function is to be used in every file that is deprecated. * * @package WordPress * @subpackage Debug * @since 2.5.0 * @access private * * @uses do_action() Calls 'deprecated_file_included' and passes the file name, what to use instead, * the version in which the file was deprecated, and any message regarding the change. * @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 deprecated the file * @param string $replacement Optional. The file that should have been included based on ABSPATH * @param string $message Optional. A message regarding the change */ function _deprecated_file( $file, $version, $replacement = null, $message = '' ) { do_action( 'deprecated_file_included', $file, $replacement, $version, $message ); // Allow plugin to filter the output error trigger if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { $message = empty( $message ) ? '' : ' ' . $message; if ( ! is_null( $replacement ) ) trigger_error( sprintf( __('%1$s is deprecated since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message ); else trigger_error( sprintf( __('%1$s is deprecated since version %2$s with no alternative available.'), $file, $version ) . $message ); } } /** * Marks a function argument as deprecated and informs when it has been used. * * This function is to be used whenever a deprecated function argument is used. * Before this function is called, the argument must be checked for whether it was * used by comparing it to its default value or evaluating whether it is empty. * For example: * * if ( !empty($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 ( ! 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 ) ) { $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, * which is the case for PHP 4.X, then we cannot easily update the xml configuration file, * hence we just bail out and tell user that pretty permalinks cannot be used. * This is not a big issue because PHP 4.X is going to be deprecated and for IIS it * is recommended to use PHP 5.X NTS. * 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 { $schema = is_ssl() ? 'https://' : 'http://'; // set_url_scheme() is not defined yet $url = preg_replace( '#/(wp-admin/.*|wp-login.php)#i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); } return rtrim($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; } /** * Is main site? * * * @since 3.0.0 * @package WordPress * * @param int $blog_id optional blog id to test (default current blog) * @return bool True if not multisite or $blog_id is main site */ function is_main_site( $blog_id = '' ) { global $current_site; if ( ! is_multisite() ) return true; if ( ! $blog_id ) $blog_id = get_current_blog_id(); return $blog_id == $current_site->blog_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 ); } /** * {@internal Missing Short Description}} * * @since 2.9.0 * * @param unknown_type $a * @param unknown_type $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. // temporary! Not in final * * @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[] = ''; } // Add the city to the value $value[] = $zone['city']; $display = $zone['t_city']; if ( !empty( $zone['subcity'] ) ) { // Add the subcity to the value $value[] = $zone['subcity']; $display .= ' - ' . $zone['t_subcity']; } } // Build the value $value = join( '/', $value ); $selected = ''; if ( $value === $selected_zone ) { $selected = 'selected="selected" '; } $structure[] = '"; // Close continent optgroup if ( !empty( $zone['city'] ) && ( !isset($zonen[$key + 1]) || (isset( $zonen[$key + 1] ) && $zonen[$key + 1]['continent'] !== $zone['continent']) ) ) { $structure[] = ''; } } // Do UTC $structure[] = ''; $selected = ''; if ( 'UTC' === $selected_zone ) $selected = 'selected="selected" '; $structure[] = ''; $structure[] = ''; // Do manual UTC offsets $structure[] = ''; $offset_range = array (-12, -11.5, -11, -10.5, -10, -9.5, -9, -8.5, -8, -7.5, -7, -6.5, -6, -5.5, -5, -4.5, -4, -3.5, -3, -2.5, -2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 5.75, 6, 6.5, 7, 7.5, 8, 8.5, 8.75, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.75, 13, 13.75, 14); foreach ( $offset_range as $offset ) { if ( 0 <= $offset ) $offset_name = '+' . $offset; else $offset_name = (string) $offset; $offset_value = $offset_name; $offset_name = str_replace(array('.25','.5','.75'), array(':15',':30',':45'), $offset_name); $offset_name = 'UTC' . $offset_name; $offset_value = 'UTC' . $offset_value; $selected = ''; if ( $offset_value === $selected_zone ) $selected = 'selected="selected" '; $structure[] = '"; } $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; } /** * Used internally to tidy up the search terms. * * @access private * @since 2.9.0 * * @param string $t * @return string */ function _search_terms_tidy($t) { return trim($t, "\"'\n\r "); } /** * 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; } /** * 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 ); }