/wp-includes/functions.php
PHP | 3666 lines | 2010 code | 365 blank | 1291 comment | 408 complexity | 7426ce16cdde551dc92e8fa0c1159f0f MD5 | raw file
Possible License(s): AGPL-1.0, GPL-2.0, LGPL-2.1
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- <?php
- /**
- * Main WordPress API
- *
- * @package WordPress
- */
- require( ABSPATH . WPINC . '/option.php' );
- /**
- * Converts given date string into a different format.
- *
- * $format should be either a PHP date format string, e.g. 'U' for a Unix
- * timestamp, or 'G' for a Unix timestamp assuming that $date is GMT.
- *
- * If $translate is true then the given date and format string will
- * be passed to date_i18n() for translation.
- *
- * @since 0.71
- *
- * @param string $format Format of the date to return.
- * @param string $date Date string to convert.
- * @param bool $translate Whether the return date should be translated. Default is true.
- * @return string|int Formatted date string, or Unix timestamp.
- */
- function mysql2date( $format, $date, $translate = true ) {
- if ( empty( $date ) )
- return false;
- if ( 'G' == $format )
- return strtotime( $date . ' +0000' );
- $i = strtotime( $date );
- if ( 'U' == $format )
- return $i;
- if ( $translate )
- return date_i18n( $format, $i );
- else
- return date( $format, $i );
- }
- /**
- * Retrieve the current time based on specified type.
- *
- * The 'mysql' type will return the time in the format for MySQL DATETIME field.
- * The 'timestamp' type will return the current timestamp.
- *
- * If $gmt is set to either '1' or 'true', then both types will use GMT time.
- * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
- *
- * @since 1.0.0
- *
- * @param string $type Either 'mysql' or 'timestamp'.
- * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false.
- * @return int|string String if $type is 'gmt', int if $type is 'timestamp'.
- */
- function current_time( $type, $gmt = 0 ) {
- switch ( $type ) {
- case 'mysql':
- return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
- break;
- case 'timestamp':
- return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
- break;
- }
- }
- /**
- * Retrieve the date in localized format, based on timestamp.
- *
- * If the locale specifies the locale month and weekday, then the locale will
- * take over the format for the date. If it isn't, then the date format string
- * will be used instead.
- *
- * @since 0.71
- *
- * @param string $dateformatstring Format to display the date.
- * @param int $unixtimestamp Optional. Unix timestamp.
- * @param bool $gmt Optional, default is false. Whether to convert to GMT for time.
- * @return string The date, translated if locale specifies it.
- */
- function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
- global $wp_locale;
- $i = $unixtimestamp;
- if ( false === $i ) {
- if ( ! $gmt )
- $i = current_time( 'timestamp' );
- else
- $i = time();
- // we should not let date() interfere with our
- // specially computed timestamp
- $gmt = true;
- }
- // store original value for language with untypical grammars
- // see http://core.trac.wordpress.org/ticket/9396
- $req_format = $dateformatstring;
- $datefunc = $gmt? 'gmdate' : 'date';
- if ( ( !empty( $wp_locale->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 - 86400 * ( $weekday - $start_of_week ); // The most recent week start day on or before $day
- $end = $start + 604799; // $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>(.+?)<\/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
- $mid = $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 ) . '%') );
- do_action( 'delete_postmeta', $mid );
- $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $mid ) ) );
- do_action( 'deleted_postmeta', $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 ( get_allowed_mime_types( ) as $exts => $mime ) {
- if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
- $type = $mime;
- break;
- }
- }
- }
- }
- if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
- $meta_value = "$url\n$len\n$type\n";
- $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) );
- do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value );
- }
- }
- }
- }
- }
- /**
- * Perform a HTTP HEAD or GET request.
- *
- * If $file_path is a writable filename, this will do a GET request and write
- * the file to that path.
- *
- * @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 = '';
- if ( is_array( func_get_arg(0) ) ) {
- if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
- $uri = $_SERVER['REQUEST_URI'];
- else
- $uri = @func_get_arg( 1 );
- } else {
- if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
- $uri = $_SERVER['REQUEST_URI'];
- else
- $uri = @func_get_arg( 2 );
- }
- if ( $frag = strstr( $uri, '#' ) )
- $uri = substr( $uri, 0, -strlen( $frag ) );
- else
- $frag = '';
- if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
- $protocol = $matches[0];
- $uri = substr( $uri, strlen( $protocol ) );
- } else {
- $protocol = '';
- }
- if ( strpos( $uri, '?' ) !== false ) {
- $parts = explode( '?', $uri, 2 );
- if ( 1 == count( $parts ) ) {
- $base = '?';
- $query = $parts[0];
- } else {
- $base = $parts[0] . '?';
- $query = $parts[1];
- }
- } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
- $base = $uri . '?';
- $query = '';
- } else {
- $base = '';
- $query = $uri;
- }
- wp_parse_str( $query, $qs );
- $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
- if ( is_array( func_get_arg( 0 ) ) ) {
- $kayvees = func_get_arg( 0 );
- $qs = array_merge( $qs, $kayvees );
- } else {
- $qs[func_get_arg( 0 )] = func_get_arg( 1 );
- }
- foreach ( (array) $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',
- 'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' 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);
- }
- 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();
- 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 = 864000; // 10 days
- header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
- header( "Vary: Accept-Encoding" ); // Handle proxies
- header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
- }
- /**
- * 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 ) {
- // from php.net/mkdir user contributed notes
- $target = str_replace( '//', '/', $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 to WP_CONTENT_DIR followed by the return value of <code>sys_get_temp_dir()</code>, 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 ( $temp )
- return trailingslashit($temp);
- $temp = WP_CONTENT_DIR . '/';
- if ( is_dir($temp) && @is_writable($temp) )
- return $temp;
- if ( function_exists('sys_get_temp_dir') ) {
- $temp = sys_get_temp_dir();
- if ( @is_writable($temp) )
- return trailingslashit($temp);
- }
- $temp = ini_get('upload_tmp_dir');
- if ( is_dir($temp) && @is_writable($temp) )
- return trailingslashit($temp);
- $temp = '/tmp/';
- return $temp;
- }
- /**
- * 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 ) {
- global $switched;
- $siteurl = get_option( 'siteurl' );
- $upload_path = get_option( 'upload_path' );
- $upload_path = trim($upload_path);
- $main_override = is_multisite() && defined( 'MULTISITE' ) && is_main_site();
- if ( empty($upload_path) ) {
- $dir = WP_CONTENT_DIR . '/uploads';
- } else {
- $dir = $upload_path;
- if ( 'wp-content/uploads' == $upload_path ) {
- $dir = WP_CONTENT_DIR . '/uploads';
- } elseif ( 0 !== strpos($dir, ABSPATH) ) {
- // $dir is absolute, $upload_path is (maybe) relative to ABSPATH
- $dir = path_join( ABSPATH, $dir );
- }
- }
- if ( !$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 ) . $upload_path;
- }
- if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
- $dir = ABSPATH . UPLOADS;
- $url = trailingslashit( $siteurl ) . UPLOADS;
- }
- if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
- if ( defined( 'BLOGUPLOADDIR' ) )
- $dir = untrailingslashit(BLOGUPLOADDIR);
- $url = str_replace( UPLOADS, 'files', $url );
- }
- $bdir = $dir;
- $burl = $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' => $bdir, 'baseurl' => $burl, 'error' => false ) );
- // Make sure we have an uploads dir
- if ( ! wp_mkdir_p( $uploads['path'] ) ) {
- $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] );
- return array( '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'] )
- 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 ) ) ) {
- $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
- return array( 'error' => $message );
- }
- $ifp = @ fopen( $new_file, 'wb' );
- if ( ! $ifp )
- return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
- @fwrite( $ifp, $bits );
- fclose( $ifp );
- 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' …
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