8 require( ABSPATH . WPINC . '/option.php' );
11 * Convert given date string into a different format.
13 * $format should be either a PHP date format string, e.g. 'U' for a Unix
14 * timestamp, or 'G' for a Unix timestamp assuming that $date is GMT.
16 * If $translate is true then the given date and format string will
17 * be passed to date_i18n() for translation.
21 * @param string $format Format of the date to return.
22 * @param string $date Date string to convert.
23 * @param bool $translate Whether the return date should be translated. Default true.
24 * @return string|int|bool Formatted date string or Unix timestamp. False if $date is empty.
26 function mysql2date( $format, $date, $translate = true ) {
31 return strtotime( $date . ' +0000' );
33 $i = strtotime( $date );
39 return date_i18n( $format, $i );
41 return date( $format, $i );
45 * Retrieve the current time based on specified type.
47 * The 'mysql' type will return the time in the format for MySQL DATETIME field.
48 * The 'timestamp' type will return the current timestamp.
49 * Other strings will be interpreted as PHP date formats (e.g. 'Y-m-d').
51 * If $gmt is set to either '1' or 'true', then both types will use GMT time.
52 * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
56 * @param string $type Type of time to retrieve. Accepts 'mysql', 'timestamp', or PHP date
57 * format string (e.g. 'Y-m-d').
58 * @param int|bool $gmt Optional. Whether to use GMT timezone. Default false.
59 * @return int|string Integer if $type is 'timestamp', string otherwise.
61 function current_time( $type, $gmt = 0 ) {
64 return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) ) );
66 return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS );
68 return ( $gmt ) ? date( $type ) : date( $type, time() + ( get_option( 'gmt_offset' ) * HOUR_IN_SECONDS ) );
73 * Retrieve the date in localized format, based on timestamp.
75 * If the locale specifies the locale month and weekday, then the locale will
76 * take over the format for the date. If it isn't, then the date format string
77 * will be used instead.
81 * @global WP_Locale $wp_locale
83 * @param string $dateformatstring Format to display the date.
84 * @param bool|int $unixtimestamp Optional. Unix timestamp. Default false.
85 * @param bool $gmt Optional. Whether to use GMT timezone. Default false.
87 * @return string The date, translated if locale specifies it.
89 function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
95 $i = current_time( 'timestamp' );
98 // we should not let date() interfere with our
99 // specially computed timestamp
104 * Store original value for language with untypical grammars.
105 * See https://core.trac.wordpress.org/ticket/9396
107 $req_format = $dateformatstring;
109 $datefunc = $gmt? 'gmdate' : 'date';
111 if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
112 $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );
113 $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
114 $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );
115 $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
116 $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );
117 $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );
118 $dateformatstring = ' '.$dateformatstring;
119 $dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
120 $dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
121 $dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
122 $dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
123 $dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
124 $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );
126 $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
128 $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' );
129 $timezone_formats_re = implode( '|', $timezone_formats );
130 if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) ) {
131 $timezone_string = get_option( 'timezone_string' );
132 if ( $timezone_string ) {
133 $timezone_object = timezone_open( $timezone_string );
134 $date_object = date_create( null, $timezone_object );
135 foreach ( $timezone_formats as $timezone_format ) {
136 if ( false !== strpos( $dateformatstring, $timezone_format ) ) {
137 $formatted = date_format( $date_object, $timezone_format );
138 $dateformatstring = ' '.$dateformatstring;
139 $dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $dateformatstring );
140 $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
145 $j = @$datefunc( $dateformatstring, $i );
148 * Filter the date formatted based on the locale.
152 * @param string $j Formatted date string.
153 * @param string $req_format Format to display the date.
154 * @param int $i Unix timestamp.
155 * @param bool $gmt Whether to convert to GMT for time. Default false.
157 $j = apply_filters( 'date_i18n', $j, $req_format, $i, $gmt );
162 * Determines if the date should be declined.
164 * If the locale specifies that month names require a genitive case in certain
165 * formats (like 'j F Y'), the month name will be replaced with a correct form.
169 * @param string $date Formatted date string.
170 * @return string The date, declined if locale specifies it.
172 function wp_maybe_decline_date( $date ) {
175 // i18n functions are not available in SHORTINIT mode
176 if ( ! function_exists( '_x' ) ) {
180 /* translators: If months in your language require a genitive case,
181 * translate this to 'on'. Do not translate into your own language.
183 if ( 'on' === _x( 'off', 'decline months names: on or off' ) ) {
184 // Match a format like 'j F Y' or 'j. F'
185 if ( @preg_match( '#^\d{1,2}\.? \w+#u', $date ) ) {
186 $months = $wp_locale->month;
188 foreach ( $months as $key => $month ) {
189 $months[ $key ] = '#' . $month . '#';
192 $date = preg_replace( $months, $wp_locale->month_genitive, $date );
196 // Used for locale-specific rules
197 $locale = get_locale();
199 if ( 'ca' === $locale ) {
200 // " de abril| de agost| de octubre..." -> " d'abril| d'agost| d'octubre..."
201 $date = preg_replace( '# de ([ao])#i', " d'\\1", $date );
208 * Convert float number to format based on the locale.
212 * @global WP_Locale $wp_locale
214 * @param float $number The number to convert based on locale.
215 * @param int $decimals Optional. Precision of the number of decimal places. Default 0.
216 * @return string Converted number in string format.
218 function number_format_i18n( $number, $decimals = 0 ) {
221 if ( isset( $wp_locale ) ) {
222 $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
224 $formatted = number_format( $number, absint( $decimals ) );
228 * Filter the number formatted based on the locale.
232 * @param string $formatted Converted number in string format.
234 return apply_filters( 'number_format_i18n', $formatted );
238 * Convert number of bytes largest unit bytes will fit into.
240 * It is easier to read 1 kB than 1024 bytes and 1 MB than 1048576 bytes. Converts
241 * number of bytes to human readable number by taking the number of that unit
242 * that the bytes will go into it. Supports TB value.
244 * Please note that integers in PHP are limited to 32 bits, unless they are on
245 * 64 bit architecture, then they have 64 bit size. If you need to place the
246 * larger size then what PHP integer type will hold, then use a string. It will
247 * be converted to a double, which should always have 64 bit length.
249 * Technically the correct unit names for powers of 1024 are KiB, MiB etc.
253 * @param int|string $bytes Number of bytes. Note max integer size for integers.
254 * @param int $decimals Optional. Precision of number of decimal places. Default 0.
255 * @return string|false False on failure. Number string on success.
257 function size_format( $bytes, $decimals = 0 ) {
266 foreach ( $quant as $unit => $mag ) {
267 if ( doubleval( $bytes ) >= $mag ) {
268 return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;
276 * Get the week start and end from the datetime or date string from MySQL.
280 * @param string $mysqlstring Date or datetime field type from MySQL.
281 * @param int|string $start_of_week Optional. Start of the week as an integer. Default empty string.
282 * @return array Keys are 'start' and 'end'.
284 function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
285 // MySQL string year.
286 $my = substr( $mysqlstring, 0, 4 );
288 // MySQL string month.
289 $mm = substr( $mysqlstring, 8, 2 );
292 $md = substr( $mysqlstring, 5, 2 );
294 // The timestamp for MySQL string day.
295 $day = mktime( 0, 0, 0, $md, $mm, $my );
297 // The day of the week from the timestamp.
298 $weekday = date( 'w', $day );
300 if ( !is_numeric($start_of_week) )
301 $start_of_week = get_option( 'start_of_week' );
303 if ( $weekday < $start_of_week )
306 // The most recent week start day on or before $day.
307 $start = $day - DAY_IN_SECONDS * ( $weekday - $start_of_week );
309 // $start + 1 week - 1 second.
310 $end = $start + WEEK_IN_SECONDS - 1;
311 return compact( 'start', 'end' );
315 * Unserialize value only if it was serialized.
319 * @param string $original Maybe unserialized original, if is needed.
320 * @return mixed Unserialized data can be any type.
322 function maybe_unserialize( $original ) {
323 if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
324 return @unserialize( $original );
329 * Check value to find if it was serialized.
331 * If $data is not an string, then returned value will always be false.
332 * Serialized data is always a string.
336 * @param string $data Value to check to see if was serialized.
337 * @param bool $strict Optional. Whether to be strict about the end of the string. Default true.
338 * @return bool False if not serialized and true if it was.
340 function is_serialized( $data, $strict = true ) {
341 // if it isn't a string, it isn't serialized.
342 if ( ! is_string( $data ) ) {
345 $data = trim( $data );
346 if ( 'N;' == $data ) {
349 if ( strlen( $data ) < 4 ) {
352 if ( ':' !== $data[1] ) {
356 $lastc = substr( $data, -1 );
357 if ( ';' !== $lastc && '}' !== $lastc ) {
361 $semicolon = strpos( $data, ';' );
362 $brace = strpos( $data, '}' );
363 // Either ; or } must exist.
364 if ( false === $semicolon && false === $brace )
366 // But neither must be in the first X characters.
367 if ( false !== $semicolon && $semicolon < 3 )
369 if ( false !== $brace && $brace < 4 )
376 if ( '"' !== substr( $data, -2, 1 ) ) {
379 } elseif ( false === strpos( $data, '"' ) ) {
382 // or else fall through
385 return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );
389 $end = $strict ? '$' : '';
390 return (bool) preg_match( "/^{$token}:[0-9.E-]+;$end/", $data );
396 * Check whether serialized data is of string type.
400 * @param string $data Serialized data.
401 * @return bool False if not a serialized string, true if it is.
403 function is_serialized_string( $data ) {
404 // if it isn't a string, it isn't a serialized string.
405 if ( ! is_string( $data ) ) {
408 $data = trim( $data );
409 if ( strlen( $data ) < 4 ) {
411 } elseif ( ':' !== $data[1] ) {
413 } elseif ( ';' !== substr( $data, -1 ) ) {
415 } elseif ( $data[0] !== 's' ) {
417 } elseif ( '"' !== substr( $data, -2, 1 ) ) {
425 * Serialize data, if needed.
429 * @param string|array|object $data Data that might be serialized.
430 * @return mixed A scalar data
432 function maybe_serialize( $data ) {
433 if ( is_array( $data ) || is_object( $data ) )
434 return serialize( $data );
436 // Double serialization is required for backward compatibility.
437 // See https://core.trac.wordpress.org/ticket/12930
438 // Also the world will end. See WP 3.6.1.
439 if ( is_serialized( $data, false ) )
440 return serialize( $data );
446 * Retrieve post title from XMLRPC XML.
448 * If the title element is not part of the XML, then the default post title from
449 * the $post_default_title will be used instead.
453 * @global string $post_default_title Default XML-RPC post title.
455 * @param string $content XMLRPC XML Request content
456 * @return string Post title
458 function xmlrpc_getposttitle( $content ) {
459 global $post_default_title;
460 if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
461 $post_title = $matchtitle[1];
463 $post_title = $post_default_title;
469 * Retrieve the post category or categories from XMLRPC XML.
471 * If the category element is not found, then the default post category will be
472 * used. The return type then would be what $post_default_category. If the
473 * category is found, then it will always be an array.
477 * @global string $post_default_category Default XML-RPC post category.
479 * @param string $content XMLRPC XML Request content
480 * @return string|array List of categories or category name.
482 function xmlrpc_getpostcategory( $content ) {
483 global $post_default_category;
484 if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
485 $post_category = trim( $matchcat[1], ',' );
486 $post_category = explode( ',', $post_category );
488 $post_category = $post_default_category;
490 return $post_category;
494 * XMLRPC XML content without title and category elements.
498 * @param string $content XML-RPC XML Request content.
499 * @return string XMLRPC XML Request content without title and category elements.
501 function xmlrpc_removepostdata( $content ) {
502 $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
503 $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
504 $content = trim( $content );
509 * Use RegEx to extract URLs from arbitrary content.
513 * @param string $content Content to extract URLs from.
514 * @return array URLs found in passed string.
516 function wp_extract_urls( $content ) {
519 . "(?:([\w-]+:)?//?)"
525 . "[^`!()\[\]{};:'\".,<>«»“”‘’\s]|"
534 $post_links = array_unique( array_map( 'html_entity_decode', $post_links[2] ) );
536 return array_values( $post_links );
540 * Check content for video and audio links to add as enclosures.
542 * Will not add enclosures that have already been added and will
543 * remove enclosures that are no longer in the post. This is called as
544 * pingbacks and trackbacks.
548 * @global wpdb $wpdb WordPress database abstraction object.
550 * @param string $content Post Content.
551 * @param int $post_ID Post ID.
553 function do_enclose( $content, $post_ID ) {
556 //TODO: Tidy this ghetto code up and make the debug code optional
557 include_once( ABSPATH . WPINC . '/class-IXR.php' );
559 $post_links = array();
561 $pung = get_enclosed( $post_ID );
563 $post_links_temp = wp_extract_urls( $content );
565 foreach ( $pung as $link_test ) {
566 if ( ! in_array( $link_test, $post_links_temp ) ) { // link no longer in post
567 $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, $wpdb->esc_like( $link_test ) . '%') );
568 foreach ( $mids as $mid )
569 delete_metadata_by_mid( 'post', $mid );
573 foreach ( (array) $post_links_temp as $link_test ) {
574 if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
575 $test = @parse_url( $link_test );
576 if ( false === $test )
578 if ( isset( $test['query'] ) )
579 $post_links[] = $link_test;
580 elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) )
581 $post_links[] = $link_test;
586 * Filter the list of enclosure links before querying the database.
588 * Allows for the addition and/or removal of potential enclosures to save
589 * to postmeta before checking the database for existing enclosures.
593 * @param array $post_links An array of enclosure links.
594 * @param int $post_ID Post ID.
596 $post_links = apply_filters( 'enclosure_links', $post_links, $post_ID );
598 foreach ( (array) $post_links as $url ) {
599 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, $wpdb->esc_like( $url ) . '%' ) ) ) {
601 if ( $headers = wp_get_http_headers( $url) ) {
602 $len = isset( $headers['content-length'] ) ? (int) $headers['content-length'] : 0;
603 $type = isset( $headers['content-type'] ) ? $headers['content-type'] : '';
604 $allowed_types = array( 'video', 'audio' );
606 // Check to see if we can figure out the mime type from
608 $url_parts = @parse_url( $url );
609 if ( false !== $url_parts ) {
610 $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
611 if ( !empty( $extension ) ) {
612 foreach ( wp_get_mime_types() as $exts => $mime ) {
613 if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
621 if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
622 add_post_meta( $post_ID, 'enclosure', "$url\n$len\n$mime\n" );
630 * Retrieve HTTP Headers from URL.
634 * @param string $url URL to retrieve HTTP headers from.
635 * @param bool $deprecated Not Used.
636 * @return bool|string False on failure, headers on success.
638 function wp_get_http_headers( $url, $deprecated = false ) {
639 if ( !empty( $deprecated ) )
640 _deprecated_argument( __FUNCTION__, '2.7' );
642 $response = wp_safe_remote_head( $url );
644 if ( is_wp_error( $response ) )
647 return wp_remote_retrieve_headers( $response );
651 * Whether the publish date of the current post in the loop is different from the
652 * publish date of the previous post in the loop.
656 * @global string $currentday The day of the current post in the loop.
657 * @global string $previousday The day of the previous post in the loop.
659 * @return int 1 when new day, 0 if not a new day.
661 function is_new_day() {
662 global $currentday, $previousday;
663 if ( $currentday != $previousday )
670 * Build URL query based on an associative and, or indexed array.
672 * This is a convenient function for easily building url queries. It sets the
673 * separator to '&' and uses _http_build_query() function.
677 * @see _http_build_query() Used to build the query
678 * @link http://us2.php.net/manual/en/function.http-build-query.php for more on what
679 * http_build_query() does.
681 * @param array $data URL-encode key/value pairs.
682 * @return string URL-encoded string.
684 function build_query( $data ) {
685 return _http_build_query( $data, null, '&', '', false );
689 * From php.net (modified by Mark Jaquith to behave like the native PHP5 function).
694 * @see http://us1.php.net/manual/en/function.http-build-query.php
696 * @param array|object $data An array or object of data. Converted to array.
697 * @param string $prefix Optional. Numeric index. If set, start parameter numbering with it.
699 * @param string $sep Optional. Argument separator; defaults to 'arg_separator.output'.
701 * @param string $key Optional. Used to prefix key name. Default empty.
702 * @param bool $urlencode Optional. Whether to use urlencode() in the result. Default true.
704 * @return string The query string.
706 function _http_build_query( $data, $prefix = null, $sep = null, $key = '', $urlencode = true ) {
709 foreach ( (array) $data as $k => $v ) {
712 if ( is_int($k) && $prefix != null )
715 $k = $key . '%5B' . $k . '%5D';
718 elseif ( $v === false )
721 if ( is_array($v) || is_object($v) )
722 array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));
723 elseif ( $urlencode )
724 array_push($ret, $k.'='.urlencode($v));
726 array_push($ret, $k.'='.$v);
730 $sep = ini_get('arg_separator.output');
732 return implode($sep, $ret);
736 * Retrieves a modified URL query string.
738 * You can rebuild the URL and append query variables to the URL query by using this function.
739 * There are two ways to use this function; either a single key and value, or an associative array.
741 * Using a single key and value:
743 * add_query_arg( 'key', 'value', 'http://example.com' );
745 * Using an associative array:
747 * add_query_arg( array(
748 * 'key1' => 'value1',
749 * 'key2' => 'value2',
750 * ), 'http://example.com' );
752 * Omitting the URL from either use results in the current URL being used
753 * (the value of `$_SERVER['REQUEST_URI']`).
755 * Values are expected to be encoded appropriately with urlencode() or rawurlencode().
757 * Setting any query variable's value to boolean false removes the key (see remove_query_arg()).
759 * Important: The return value of add_query_arg() is not escaped by default. Output should be
760 * late-escaped with esc_url() or similar to help prevent vulnerability to cross-site scripting
765 * @param string|array $key Either a query variable key, or an associative array of query variables.
766 * @param string $value Optional. Either a query variable value, or a URL to act upon.
767 * @param string $url Optional. A URL to act upon.
768 * @return string New URL query string (unescaped).
770 function add_query_arg() {
771 $args = func_get_args();
772 if ( is_array( $args[0] ) ) {
773 if ( count( $args ) < 2 || false === $args[1] )
774 $uri = $_SERVER['REQUEST_URI'];
778 if ( count( $args ) < 3 || false === $args[2] )
779 $uri = $_SERVER['REQUEST_URI'];
784 if ( $frag = strstr( $uri, '#' ) )
785 $uri = substr( $uri, 0, -strlen( $frag ) );
789 if ( 0 === stripos( $uri, 'http://' ) ) {
790 $protocol = 'http://';
791 $uri = substr( $uri, 7 );
792 } elseif ( 0 === stripos( $uri, 'https://' ) ) {
793 $protocol = 'https://';
794 $uri = substr( $uri, 8 );
799 if ( strpos( $uri, '?' ) !== false ) {
800 list( $base, $query ) = explode( '?', $uri, 2 );
802 } elseif ( $protocol || strpos( $uri, '=' ) === false ) {
810 wp_parse_str( $query, $qs );
811 $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
812 if ( is_array( $args[0] ) ) {
813 foreach ( $args[0] as $k => $v ) {
817 $qs[ $args[0] ] = $args[1];
820 foreach ( $qs as $k => $v ) {
825 $ret = build_query( $qs );
826 $ret = trim( $ret, '?' );
827 $ret = preg_replace( '#=(&|$)#', '$1', $ret );
828 $ret = $protocol . $base . $ret . $frag;
829 $ret = rtrim( $ret, '?' );
834 * Removes an item or items from a query string.
838 * @param string|array $key Query key or keys to remove.
839 * @param bool|string $query Optional. When false uses the current URL. Default false.
840 * @return string New URL query string.
842 function remove_query_arg( $key, $query = false ) {
843 if ( is_array( $key ) ) { // removing multiple keys
844 foreach ( $key as $k )
845 $query = add_query_arg( $k, false, $query );
848 return add_query_arg( $key, false, $query );
852 * Returns an array of single-use query variable names that can be removed from a URL.
856 * @return array An array of parameters to remove from the URL.
858 function wp_removable_query_args() {
859 $removable_query_args = array(
880 'wp-post-new-reload',
884 * Filter the list of query variables to remove.
888 * @param array $removable_query_args An array of query variables to remove from a URL.
890 return apply_filters( 'removable_query_args', $removable_query_args );
894 * Walks the array while sanitizing the contents.
898 * @param array $array Array to walk while sanitizing contents.
899 * @return array Sanitized $array.
901 function add_magic_quotes( $array ) {
902 foreach ( (array) $array as $k => $v ) {
903 if ( is_array( $v ) ) {
904 $array[$k] = add_magic_quotes( $v );
906 $array[$k] = addslashes( $v );
913 * HTTP request for URI to retrieve content.
917 * @see wp_safe_remote_get()
919 * @param string $uri URI/URL of web page to retrieve.
920 * @return false|string HTTP content. False on failure.
922 function wp_remote_fopen( $uri ) {
923 $parsed_url = @parse_url( $uri );
925 if ( !$parsed_url || !is_array( $parsed_url ) )
929 $options['timeout'] = 10;
931 $response = wp_safe_remote_get( $uri, $options );
933 if ( is_wp_error( $response ) )
936 return wp_remote_retrieve_body( $response );
940 * Set up the WordPress query.
944 * @global WP $wp_locale
945 * @global WP_Query $wp_query
946 * @global WP_Query $wp_the_query
948 * @param string|array $query_vars Default WP_Query arguments.
950 function wp( $query_vars = '' ) {
951 global $wp, $wp_query, $wp_the_query;
952 $wp->main( $query_vars );
954 if ( !isset($wp_the_query) )
955 $wp_the_query = $wp_query;
959 * Retrieve the description for the HTTP status.
963 * @global array $wp_header_to_desc
965 * @param int $code HTTP status code.
966 * @return string Empty string if not found, or description if found.
968 function get_status_header_desc( $code ) {
969 global $wp_header_to_desc;
971 $code = absint( $code );
973 if ( !isset( $wp_header_to_desc ) ) {
974 $wp_header_to_desc = array(
976 101 => 'Switching Protocols',
982 203 => 'Non-Authoritative Information',
984 205 => 'Reset Content',
985 206 => 'Partial Content',
986 207 => 'Multi-Status',
989 300 => 'Multiple Choices',
990 301 => 'Moved Permanently',
993 304 => 'Not Modified',
996 307 => 'Temporary Redirect',
997 308 => 'Permanent Redirect',
999 400 => 'Bad Request',
1000 401 => 'Unauthorized',
1001 402 => 'Payment Required',
1004 405 => 'Method Not Allowed',
1005 406 => 'Not Acceptable',
1006 407 => 'Proxy Authentication Required',
1007 408 => 'Request Timeout',
1010 411 => 'Length Required',
1011 412 => 'Precondition Failed',
1012 413 => 'Request Entity Too Large',
1013 414 => 'Request-URI Too Long',
1014 415 => 'Unsupported Media Type',
1015 416 => 'Requested Range Not Satisfiable',
1016 417 => 'Expectation Failed',
1017 418 => 'I\'m a teapot',
1018 421 => 'Misdirected Request',
1019 422 => 'Unprocessable Entity',
1021 424 => 'Failed Dependency',
1022 426 => 'Upgrade Required',
1023 428 => 'Precondition Required',
1024 429 => 'Too Many Requests',
1025 431 => 'Request Header Fields Too Large',
1026 451 => 'Unavailable For Legal Reasons',
1028 500 => 'Internal Server Error',
1029 501 => 'Not Implemented',
1030 502 => 'Bad Gateway',
1031 503 => 'Service Unavailable',
1032 504 => 'Gateway Timeout',
1033 505 => 'HTTP Version Not Supported',
1034 506 => 'Variant Also Negotiates',
1035 507 => 'Insufficient Storage',
1036 510 => 'Not Extended',
1037 511 => 'Network Authentication Required',
1041 if ( isset( $wp_header_to_desc[$code] ) )
1042 return $wp_header_to_desc[$code];
1048 * Set HTTP status header.
1051 * @since 4.4.0 Added the `$description` parameter.
1053 * @see get_status_header_desc()
1055 * @param int $code HTTP status code.
1056 * @param string $description Optional. A custom description for the HTTP status.
1058 function status_header( $code, $description = '' ) {
1059 if ( ! $description ) {
1060 $description = get_status_header_desc( $code );
1063 if ( empty( $description ) ) {
1067 $protocol = wp_get_server_protocol();
1068 $status_header = "$protocol $code $description";
1069 if ( function_exists( 'apply_filters' ) )
1072 * Filter an HTTP status header.
1076 * @param string $status_header HTTP status header.
1077 * @param int $code HTTP status code.
1078 * @param string $description Description for the status code.
1079 * @param string $protocol Server protocol.
1081 $status_header = apply_filters( 'status_header', $status_header, $code, $description, $protocol );
1083 @header( $status_header, true, $code );
1087 * Get the header information to prevent caching.
1089 * The several different headers cover the different ways cache prevention
1090 * is handled by different browsers
1094 * @return array The associative array of header names and field values.
1096 function wp_get_nocache_headers() {
1098 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
1099 'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
1100 'Pragma' => 'no-cache',
1103 if ( function_exists('apply_filters') ) {
1105 * Filter the cache-controlling headers.
1109 * @see wp_get_nocache_headers()
1111 * @param array $headers {
1112 * Header names and field values.
1114 * @type string $Expires Expires header.
1115 * @type string $Cache-Control Cache-Control header.
1116 * @type string $Pragma Pragma header.
1119 $headers = (array) apply_filters( 'nocache_headers', $headers );
1121 $headers['Last-Modified'] = false;
1126 * Set the headers to prevent caching for the different browsers.
1128 * Different browsers support different nocache headers, so several
1129 * headers must be sent so that all of them get the point that no
1130 * caching should occur.
1134 * @see wp_get_nocache_headers()
1136 function nocache_headers() {
1137 $headers = wp_get_nocache_headers();
1139 unset( $headers['Last-Modified'] );
1141 // In PHP 5.3+, make sure we are not sending a Last-Modified header.
1142 if ( function_exists( 'header_remove' ) ) {
1143 @header_remove( 'Last-Modified' );
1145 // In PHP 5.2, send an empty Last-Modified header, but only as a
1146 // last resort to override a header already sent. #WP23021
1147 foreach ( headers_list() as $header ) {
1148 if ( 0 === stripos( $header, 'Last-Modified' ) ) {
1149 $headers['Last-Modified'] = '';
1155 foreach ( $headers as $name => $field_value )
1156 @header("{$name}: {$field_value}");
1160 * Set the headers for caching for 10 days with JavaScript content type.
1164 function cache_javascript_headers() {
1165 $expiresOffset = 10 * DAY_IN_SECONDS;
1167 header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
1168 header( "Vary: Accept-Encoding" ); // Handle proxies
1169 header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
1173 * Retrieve the number of database queries during the WordPress execution.
1177 * @global wpdb $wpdb WordPress database abstraction object.
1179 * @return int Number of database queries.
1181 function get_num_queries() {
1183 return $wpdb->num_queries;
1187 * Whether input is yes or no.
1189 * Must be 'y' to be true.
1193 * @param string $yn Character string containing either 'y' (yes) or 'n' (no).
1194 * @return bool True if yes, false on anything else.
1196 function bool_from_yn( $yn ) {
1197 return ( strtolower( $yn ) == 'y' );
1201 * Load the feed template from the use of an action hook.
1203 * If the feed action does not have a hook, then the function will die with a
1204 * message telling the visitor that the feed is not valid.
1206 * It is better to only have one hook for each feed.
1210 * @global WP_Query $wp_query Used to tell if the use a comment feed.
1212 function do_feed() {
1215 $feed = get_query_var( 'feed' );
1217 // Remove the pad, if present.
1218 $feed = preg_replace( '/^_+/', '', $feed );
1220 if ( $feed == '' || $feed == 'feed' )
1221 $feed = get_default_feed();
1223 if ( ! has_action( "do_feed_{$feed}" ) ) {
1224 wp_die( __( 'ERROR: This is not a valid feed template.' ), '', array( 'response' => 404 ) );
1228 * Fires once the given feed is loaded.
1230 * The dynamic portion of the hook name, `$feed`, refers to the feed template name.
1231 * Possible values include: 'rdf', 'rss', 'rss2', and 'atom'.
1234 * @since 4.4.0 The `$feed` parameter was added.
1236 * @param bool $is_comment_feed Whether the feed is a comment feed.
1237 * @param string $feed The feed name.
1239 do_action( "do_feed_{$feed}", $wp_query->is_comment_feed, $feed );
1243 * Load the RDF RSS 0.91 Feed template.
1247 * @see load_template()
1249 function do_feed_rdf() {
1250 load_template( ABSPATH . WPINC . '/feed-rdf.php' );
1254 * Load the RSS 1.0 Feed Template.
1258 * @see load_template()
1260 function do_feed_rss() {
1261 load_template( ABSPATH . WPINC . '/feed-rss.php' );
1265 * Load either the RSS2 comment feed or the RSS2 posts feed.
1269 * @see load_template()
1271 * @param bool $for_comments True for the comment feed, false for normal feed.
1273 function do_feed_rss2( $for_comments ) {
1274 if ( $for_comments )
1275 load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
1277 load_template( ABSPATH . WPINC . '/feed-rss2.php' );
1281 * Load either Atom comment feed or Atom posts feed.
1285 * @see load_template()
1287 * @param bool $for_comments True for the comment feed, false for normal feed.
1289 function do_feed_atom( $for_comments ) {
1291 load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
1293 load_template( ABSPATH . WPINC . '/feed-atom.php' );
1297 * Display the robots.txt file content.
1299 * The echo content should be with usage of the permalinks or for creating the
1304 function do_robots() {
1305 header( 'Content-Type: text/plain; charset=utf-8' );
1308 * Fires when displaying the robots.txt file.
1312 do_action( 'do_robotstxt' );
1314 $output = "User-agent: *\n";
1315 $public = get_option( 'blog_public' );
1316 if ( '0' == $public ) {
1317 $output .= "Disallow: /\n";
1319 $site_url = parse_url( site_url() );
1320 $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : '';
1321 $output .= "Disallow: $path/wp-admin/\n";
1322 $output .= "Allow: $path/wp-admin/admin-ajax.php\n";
1326 * Filter the robots.txt output.
1330 * @param string $output Robots.txt output.
1331 * @param bool $public Whether the site is considered "public".
1333 echo apply_filters( 'robots_txt', $output, $public );
1337 * Test whether WordPress is already installed.
1339 * The cache will be checked first. If you have a cache plugin, which saves
1340 * the cache values, then this will work. If you use the default WordPress
1341 * cache, and the database goes away, then you might have problems.
1343 * Checks for the 'siteurl' option for whether WordPress is installed.
1347 * @global wpdb $wpdb WordPress database abstraction object.
1349 * @return bool Whether the site is already installed.
1351 function is_blog_installed() {
1355 * Check cache first. If options table goes away and we have true
1358 if ( wp_cache_get( 'is_blog_installed' ) )
1361 $suppress = $wpdb->suppress_errors();
1362 if ( ! wp_installing() ) {
1363 $alloptions = wp_load_alloptions();
1365 // If siteurl is not set to autoload, check it specifically
1366 if ( !isset( $alloptions['siteurl'] ) )
1367 $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
1369 $installed = $alloptions['siteurl'];
1370 $wpdb->suppress_errors( $suppress );
1372 $installed = !empty( $installed );
1373 wp_cache_set( 'is_blog_installed', $installed );
1378 // If visiting repair.php, return true and let it take over.
1379 if ( defined( 'WP_REPAIRING' ) )
1382 $suppress = $wpdb->suppress_errors();
1385 * Loop over the WP tables. If none exist, then scratch install is allowed.
1386 * If one or more exist, suggest table repair since we got here because the
1387 * options table could not be accessed.
1389 $wp_tables = $wpdb->tables();
1390 foreach ( $wp_tables as $table ) {
1391 // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install.
1392 if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table )
1394 if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table )
1397 if ( ! $wpdb->get_results( "DESCRIBE $table;" ) )
1400 // One or more tables exist. We are insane.
1402 wp_load_translations_early();
1404 // Die with a DB error.
1405 $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' );
1409 $wpdb->suppress_errors( $suppress );
1411 wp_cache_set( 'is_blog_installed', false );
1417 * Retrieve URL with nonce added to URL query.
1421 * @param string $actionurl URL to add nonce action.
1422 * @param int|string $action Optional. Nonce action name. Default -1.
1423 * @param string $name Optional. Nonce name. Default '_wpnonce'.
1424 * @return string Escaped URL with nonce action added.
1426 function wp_nonce_url( $actionurl, $action = -1, $name = '_wpnonce' ) {
1427 $actionurl = str_replace( '&', '&', $actionurl );
1428 return esc_html( add_query_arg( $name, wp_create_nonce( $action ), $actionurl ) );
1432 * Retrieve or display nonce hidden field for forms.
1434 * The nonce field is used to validate that the contents of the form came from
1435 * the location on the current site and not somewhere else. The nonce does not
1436 * offer absolute protection, but should protect against most cases. It is very
1437 * important to use nonce field in forms.
1439 * The $action and $name are optional, but if you want to have better security,
1440 * it is strongly suggested to set those two parameters. It is easier to just
1441 * call the function without any parameters, because validation of the nonce
1442 * doesn't require any parameters, but since crackers know what the default is
1443 * it won't be difficult for them to find a way around your nonce and cause
1446 * The input name will be whatever $name value you gave. The input value will be
1447 * the nonce creation value.
1451 * @param int|string $action Optional. Action name. Default -1.
1452 * @param string $name Optional. Nonce name. Default '_wpnonce'.
1453 * @param bool $referer Optional. Whether to set the referer field for validation. Default true.
1454 * @param bool $echo Optional. Whether to display or return hidden form field. Default true.
1455 * @return string Nonce field HTML markup.
1457 function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
1458 $name = esc_attr( $name );
1459 $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
1462 $nonce_field .= wp_referer_field( false );
1467 return $nonce_field;
1471 * Retrieve or display referer hidden field for forms.
1473 * The referer link is the current Request URI from the server super global. The
1474 * input name is '_wp_http_referer', in case you wanted to check manually.
1478 * @param bool $echo Optional. Whether to echo or return the referer field. Default true.
1479 * @return string Referer field HTML markup.
1481 function wp_referer_field( $echo = true ) {
1482 $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. esc_attr( wp_unslash( $_SERVER['REQUEST_URI'] ) ) . '" />';
1485 echo $referer_field;
1486 return $referer_field;
1490 * Retrieve or display original referer hidden field for forms.
1492 * The input name is '_wp_original_http_referer' and will be either the same
1493 * value of wp_referer_field(), if that was posted already or it will be the
1494 * current page, if it doesn't exist.
1498 * @param bool $echo Optional. Whether to echo the original http referer. Default true.
1499 * @param string $jump_back_to Optional. Can be 'previous' or page you want to jump back to.
1500 * Default 'current'.
1501 * @return string Original referer field.
1503 function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
1504 if ( ! $ref = wp_get_original_referer() ) {
1505 $ref = 'previous' == $jump_back_to ? wp_get_referer() : wp_unslash( $_SERVER['REQUEST_URI'] );
1507 $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( $ref ) . '" />';
1509 echo $orig_referer_field;
1510 return $orig_referer_field;
1514 * Retrieve referer from '_wp_http_referer' or HTTP referer.
1516 * If it's the same as the current request URL, will return false.
1520 * @return false|string False on failure. Referer URL on success.
1522 function wp_get_referer() {
1523 if ( ! function_exists( 'wp_validate_redirect' ) ) {
1527 $ref = wp_get_raw_referer();
1529 if ( $ref && $ref !== wp_unslash( $_SERVER['REQUEST_URI'] ) && $ref !== home_url() . wp_unslash( $_SERVER['REQUEST_URI'] ) ) {
1530 return wp_validate_redirect( $ref, false );
1537 * Retrieves unvalidated referer from '_wp_http_referer' or HTTP referer.
1539 * Do not use for redirects, use {@see wp_get_referer()} instead.
1543 * @return string|false Referer URL on success, false on failure.
1545 function wp_get_raw_referer() {
1546 if ( ! empty( $_REQUEST['_wp_http_referer'] ) ) {
1547 return wp_unslash( $_REQUEST['_wp_http_referer'] );
1548 } else if ( ! empty( $_SERVER['HTTP_REFERER'] ) ) {
1549 return wp_unslash( $_SERVER['HTTP_REFERER'] );
1556 * Retrieve original referer that was posted, if it exists.
1560 * @return string|false False if no original referer or original referer if set.
1562 function wp_get_original_referer() {
1563 if ( ! empty( $_REQUEST['_wp_original_http_referer'] ) && function_exists( 'wp_validate_redirect' ) )
1564 return wp_validate_redirect( wp_unslash( $_REQUEST['_wp_original_http_referer'] ), false );
1569 * Recursive directory creation based on full path.
1571 * Will attempt to set permissions on folders.
1575 * @param string $target Full path to attempt to create.
1576 * @return bool Whether the path was created. True if path already exists.
1578 function wp_mkdir_p( $target ) {
1581 // Strip the protocol.
1582 if ( wp_is_stream( $target ) ) {
1583 list( $wrapper, $target ) = explode( '://', $target, 2 );
1586 // From php.net/mkdir user contributed notes.
1587 $target = str_replace( '//', '/', $target );
1589 // Put the wrapper back on the target.
1590 if ( $wrapper !== null ) {
1591 $target = $wrapper . '://' . $target;
1595 * Safe mode fails with a trailing slash under certain PHP versions.
1596 * Use rtrim() instead of untrailingslashit to avoid formatting.php dependency.
1598 $target = rtrim($target, '/');
1599 if ( empty($target) )
1602 if ( file_exists( $target ) )
1603 return @is_dir( $target );
1605 // We need to find the permissions of the parent folder that exists and inherit that.
1606 $target_parent = dirname( $target );
1607 while ( '.' != $target_parent && ! is_dir( $target_parent ) ) {
1608 $target_parent = dirname( $target_parent );
1611 // Get the permission bits.
1612 if ( $stat = @stat( $target_parent ) ) {
1613 $dir_perms = $stat['mode'] & 0007777;
1618 if ( @mkdir( $target, $dir_perms, true ) ) {
1621 * If a umask is set that modifies $dir_perms, we'll have to re-set
1622 * the $dir_perms correctly with chmod()
1624 if ( $dir_perms != ( $dir_perms & ~umask() ) ) {
1625 $folder_parts = explode( '/', substr( $target, strlen( $target_parent ) + 1 ) );
1626 for ( $i = 1, $c = count( $folder_parts ); $i <= $c; $i++ ) {
1627 @chmod( $target_parent . '/' . implode( '/', array_slice( $folder_parts, 0, $i ) ), $dir_perms );
1638 * Test if a give filesystem path is absolute.
1640 * For example, '/foo/bar', or 'c:\windows'.
1644 * @param string $path File path.
1645 * @return bool True if path is absolute, false is not absolute.
1647 function path_is_absolute( $path ) {
1649 * This is definitive if true but fails if $path does not exist or contains
1652 if ( realpath($path) == $path )
1655 if ( strlen($path) == 0 || $path[0] == '.' )
1658 // Windows allows absolute paths like this.
1659 if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
1662 // A path starting with / or \ is absolute; anything else is relative.
1663 return ( $path[0] == '/' || $path[0] == '\\' );
1667 * Join two filesystem paths together.
1669 * For example, 'give me $path relative to $base'. If the $path is absolute,
1670 * then it the full path is returned.
1674 * @param string $base Base path.
1675 * @param string $path Path relative to $base.
1676 * @return string The path with the base or absolute path.
1678 function path_join( $base, $path ) {
1679 if ( path_is_absolute($path) )
1682 return rtrim($base, '/') . '/' . ltrim($path, '/');
1686 * Normalize a filesystem path.
1688 * On windows systems, replaces backslashes with forward slashes
1689 * and forces upper-case drive letters.
1690 * Allows for two leading slashes for Windows network shares, but
1691 * ensures that all other duplicate slashes are reduced to a single.
1694 * @since 4.4.0 Ensures upper-case drive letters on Windows systems.
1695 * @since 4.5.0 Allows for Windows network shares.
1697 * @param string $path Path to normalize.
1698 * @return string Normalized path.
1700 function wp_normalize_path( $path ) {
1701 $path = str_replace( '\\', '/', $path );
1702 $path = preg_replace( '|(?<=.)/+|', '/', $path );
1703 if ( ':' === substr( $path, 1, 1 ) ) {
1704 $path = ucfirst( $path );
1710 * Determine a writable directory for temporary files.
1712 * Function's preference is the return value of sys_get_temp_dir(),
1713 * followed by your PHP temporary upload directory, followed by WP_CONTENT_DIR,
1714 * before finally defaulting to /tmp/
1716 * In the event that this function does not find a writable location,
1717 * It may be overridden by the WP_TEMP_DIR constant in your wp-config.php file.
1721 * @staticvar string $temp
1723 * @return string Writable temporary directory.
1725 function get_temp_dir() {
1727 if ( defined('WP_TEMP_DIR') )
1728 return trailingslashit(WP_TEMP_DIR);
1731 return trailingslashit( $temp );
1733 if ( function_exists('sys_get_temp_dir') ) {
1734 $temp = sys_get_temp_dir();
1735 if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
1736 return trailingslashit( $temp );
1739 $temp = ini_get('upload_tmp_dir');
1740 if ( @is_dir( $temp ) && wp_is_writable( $temp ) )
1741 return trailingslashit( $temp );
1743 $temp = WP_CONTENT_DIR . '/';
1744 if ( is_dir( $temp ) && wp_is_writable( $temp ) )
1751 * Determine if a directory is writable.
1753 * This function is used to work around certain ACL issues in PHP primarily
1754 * affecting Windows Servers.
1758 * @see win_is_writable()
1760 * @param string $path Path to check for write-ability.
1761 * @return bool Whether the path is writable.
1763 function wp_is_writable( $path ) {
1764 if ( 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) )
1765 return win_is_writable( $path );
1767 return @is_writable( $path );
1771 * Workaround for Windows bug in is_writable() function
1773 * PHP has issues with Windows ACL's for determine if a
1774 * directory is writable or not, this works around them by
1775 * checking the ability to open files rather than relying
1776 * upon PHP to interprate the OS ACL.
1780 * @see http://bugs.php.net/bug.php?id=27609
1781 * @see http://bugs.php.net/bug.php?id=30931
1783 * @param string $path Windows path to check for write-ability.
1784 * @return bool Whether the path is writable.
1786 function win_is_writable( $path ) {
1788 if ( $path[strlen( $path ) - 1] == '/' ) { // if it looks like a directory, check a random file within the directory
1789 return win_is_writable( $path . uniqid( mt_rand() ) . '.tmp');
1790 } elseif ( is_dir( $path ) ) { // If it's a directory (and not a file) check a random file within the directory
1791 return win_is_writable( $path . '/' . uniqid( mt_rand() ) . '.tmp' );
1793 // check tmp file for read/write capabilities
1794 $should_delete_tmp_file = !file_exists( $path );
1795 $f = @fopen( $path, 'a' );
1799 if ( $should_delete_tmp_file )
1805 * Retrieves uploads directory information.
1807 * Same as wp_upload_dir() but "light weight" as it doesn't attempt to create the uploads directory.
1808 * Intended for use in themes, when only 'basedir' and 'baseurl' are needed, generally in all cases
1809 * when not uploading files.
1813 * @see wp_upload_dir()
1815 * @return array See wp_upload_dir() for description.
1817 function wp_get_upload_dir() {
1818 return wp_upload_dir( null, false );
1822 * Get an array containing the current upload directory's path and url.
1824 * Checks the 'upload_path' option, which should be from the web root folder,
1825 * and if it isn't empty it will be used. If it is empty, then the path will be
1826 * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
1827 * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
1829 * The upload URL path is set either by the 'upload_url_path' option or by using
1830 * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
1832 * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
1833 * the administration settings panel), then the time will be used. The format
1834 * will be year first and then month.
1836 * If the path couldn't be created, then an error will be returned with the key
1837 * 'error' containing the error message. The error suggests that the parent
1838 * directory is not writable by the server.
1840 * On success, the returned array will have many indices:
1841 * 'path' - base directory and sub directory or full path to upload directory.
1842 * 'url' - base url and sub directory or absolute URL to upload directory.
1843 * 'subdir' - sub directory if uploads use year/month folders option is on.
1844 * 'basedir' - path without subdir.
1845 * 'baseurl' - URL path without subdir.
1846 * 'error' - false or error message.
1849 * @uses _wp_upload_dir()
1851 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
1852 * @param bool $create_dir Optional. Whether to check and create the uploads directory. Default true (backwards compatible).
1853 * @param bool $refresh_cache Optional. Whether to refresh the cache. Default false.
1854 * @return array See above for description.
1856 function wp_upload_dir( $time = null, $create_dir = true, $refresh_cache = false ) {
1857 static $cache = array();
1859 $key = sprintf( '%d-%s', get_current_blog_id(), (string) $time );
1861 if ( $refresh_cache || empty( $cache[ $key ] ) ) {
1862 $cache[ $key ] = _wp_upload_dir( $time );
1866 * Filter the uploads directory data.
1870 * @param array $uploads Array of upload directory data with keys of 'path',
1871 * 'url', 'subdir, 'basedir', and 'error'.
1873 $uploads = apply_filters( 'upload_dir', $cache[ $key ] );
1875 if ( $create_dir ) {
1876 $path = $uploads['path'];
1877 $tested_paths = wp_cache_get( 'upload_dir_tested_paths' );
1879 if ( ! is_array( $tested_paths ) ) {
1880 $tested_paths = array();
1883 if ( ! in_array( $path, $tested_paths, true ) ) {
1884 if ( ! wp_mkdir_p( $path ) ) {
1885 if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) {
1886 $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir'];
1888 $error_path = basename( $uploads['basedir'] ) . $uploads['subdir'];
1891 $uploads['error'] = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), esc_html( $error_path ) );
1893 $tested_paths[] = $path;
1894 wp_cache_set( 'upload_dir_tested_paths', $tested_paths );
1903 * A non-filtered, non-cached version of wp_upload_dir() that doesn't check the path.
1907 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
1908 * @return array See wp_upload_dir()
1910 function _wp_upload_dir( $time = null ) {
1911 $siteurl = get_option( 'siteurl' );
1912 $upload_path = trim( get_option( 'upload_path' ) );
1914 if ( empty( $upload_path ) || 'wp-content/uploads' == $upload_path ) {
1915 $dir = WP_CONTENT_DIR . '/uploads';
1916 } elseif ( 0 !== strpos( $upload_path, ABSPATH ) ) {
1917 // $dir is absolute, $upload_path is (maybe) relative to ABSPATH
1918 $dir = path_join( ABSPATH, $upload_path );
1920 $dir = $upload_path;
1923 if ( !$url = get_option( 'upload_url_path' ) ) {
1924 if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )
1925 $url = WP_CONTENT_URL . '/uploads';
1927 $url = trailingslashit( $siteurl ) . $upload_path;
1931 * Honor the value of UPLOADS. This happens as long as ms-files rewriting is disabled.
1932 * We also sometimes obey UPLOADS when rewriting is enabled -- see the next block.
1934 if ( defined( 'UPLOADS' ) && ! ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) ) {
1935 $dir = ABSPATH . UPLOADS;
1936 $url = trailingslashit( $siteurl ) . UPLOADS;
1939 // If multisite (and if not the main site in a post-MU network)
1940 if ( is_multisite() && ! ( is_main_network() && is_main_site() && defined( 'MULTISITE' ) ) ) {
1942 if ( ! get_site_option( 'ms_files_rewriting' ) ) {
1944 * If ms-files rewriting is disabled (networks created post-3.5), it is fairly
1945 * straightforward: Append sites/%d if we're not on the main site (for post-MU
1946 * networks). (The extra directory prevents a four-digit ID from conflicting with
1947 * a year-based directory for the main site. But if a MU-era network has disabled
1948 * ms-files rewriting manually, they don't need the extra directory, as they never
1949 * had wp-content/uploads for the main site.)
1952 if ( defined( 'MULTISITE' ) )
1953 $ms_dir = '/sites/' . get_current_blog_id();
1955 $ms_dir = '/' . get_current_blog_id();
1960 } elseif ( defined( 'UPLOADS' ) && ! ms_is_switched() ) {
1962 * Handle the old-form ms-files.php rewriting if the network still has that enabled.
1963 * When ms-files rewriting is enabled, then we only listen to UPLOADS when:
1964 * 1) We are not on the main site in a post-MU network, as wp-content/uploads is used
1966 * 2) We are not switched, as ms_upload_constants() hardcodes these constants to reflect
1967 * the original blog ID.
1969 * Rather than UPLOADS, we actually use BLOGUPLOADDIR if it is set, as it is absolute.
1970 * (And it will be set, see ms_upload_constants().) Otherwise, UPLOADS can be used, as
1971 * as it is relative to ABSPATH. For the final piece: when UPLOADS is used with ms-files
1972 * rewriting in multisite, the resulting URL is /files. (#WP22702 for background.)
1975 if ( defined( 'BLOGUPLOADDIR' ) )
1976 $dir = untrailingslashit( BLOGUPLOADDIR );
1978 $dir = ABSPATH . UPLOADS;
1979 $url = trailingslashit( $siteurl ) . 'files';
1987 if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
1988 // Generate the yearly and monthly dirs
1990 $time = current_time( 'mysql' );
1991 $y = substr( $time, 0, 4 );
1992 $m = substr( $time, 5, 2 );
2002 'subdir' => $subdir,
2003 'basedir' => $basedir,
2004 'baseurl' => $baseurl,
2010 * Get a filename that is sanitized and unique for the given directory.
2012 * If the filename is not unique, then a number will be added to the filename
2013 * before the extension, and will continue adding numbers until the filename is
2016 * The callback is passed three parameters, the first one is the directory, the
2017 * second is the filename, and the third is the extension.
2021 * @param string $dir Directory.
2022 * @param string $filename File name.
2023 * @param callable $unique_filename_callback Callback. Default null.
2024 * @return string New filename, if given wasn't unique.
2026 function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
2027 // Sanitize the file name before we begin processing.
2028 $filename = sanitize_file_name($filename);
2030 // Separate the filename into a name and extension.
2031 $info = pathinfo($filename);
2032 $ext = !empty($info['extension']) ? '.' . $info['extension'] : '';
2033 $name = basename($filename, $ext);
2035 // Edge case: if file is named '.ext', treat as an empty name.
2036 if ( $name === $ext )
2040 * Increment the file number until we have a unique file to save in $dir.
2041 * Use callback if supplied.
2043 if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) {
2044 $filename = call_user_func( $unique_filename_callback, $dir, $name, $ext );
2048 // Change '.ext' to lower case.
2049 if ( $ext && strtolower($ext) != $ext ) {
2050 $ext2 = strtolower($ext);
2051 $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );
2053 // Check for both lower and upper case extension or image sub-sizes may be overwritten.
2054 while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
2055 $new_number = $number + 1;
2056 $filename = str_replace( array( "-$number$ext", "$number$ext" ), "-$new_number$ext", $filename );
2057 $filename2 = str_replace( array( "-$number$ext2", "$number$ext2" ), "-$new_number$ext2", $filename2 );
2058 $number = $new_number;
2062 * Filter the result when generating a unique file name.
2066 * @param string $filename Unique file name.
2067 * @param string $ext File extension, eg. ".png".
2068 * @param string $dir Directory path.
2069 * @param callable|null $unique_filename_callback Callback function that generates the unique file name.
2071 return apply_filters( 'wp_unique_filename', $filename2, $ext, $dir, $unique_filename_callback );
2074 while ( file_exists( $dir . "/$filename" ) ) {
2075 if ( '' == "$number$ext" ) {
2076 $filename = "$filename-" . ++$number;
2078 $filename = str_replace( array( "-$number$ext", "$number$ext" ), "-" . ++$number . $ext, $filename );
2083 /** This filter is documented in wp-includes/functions.php */
2084 return apply_filters( 'wp_unique_filename', $filename, $ext, $dir, $unique_filename_callback );
2088 * Create a file in the upload folder with given content.
2090 * If there is an error, then the key 'error' will exist with the error message.
2091 * If success, then the key 'file' will have the unique file path, the 'url' key
2092 * will have the link to the new file. and the 'error' key will be set to false.
2094 * This function will not move an uploaded file to the upload folder. It will
2095 * create a new file with the content in $bits parameter. If you move the upload
2096 * file, read the content of the uploaded file, and then you can give the
2097 * filename and content to this function, which will add it to the upload
2100 * The permissions will be set on the new file automatically by this function.
2104 * @param string $name Filename.
2105 * @param null|string $deprecated Never used. Set to null.
2106 * @param mixed $bits File content
2107 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null.
2110 function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
2111 if ( !empty( $deprecated ) )
2112 _deprecated_argument( __FUNCTION__, '2.0' );
2114 if ( empty( $name ) )
2115 return array( 'error' => __( 'Empty filename' ) );
2117 $wp_filetype = wp_check_filetype( $name );
2118 if ( ! $wp_filetype['ext'] && ! current_user_can( 'unfiltered_upload' ) )
2119 return array( 'error' => __( 'Invalid file type' ) );
2121 $upload = wp_upload_dir( $time );
2123 if ( $upload['error'] !== false )
2127 * Filter whether to treat the upload bits as an error.
2129 * Passing a non-array to the filter will effectively short-circuit preparing
2130 * the upload bits, returning that value instead.
2134 * @param mixed $upload_bits_error An array of upload bits data, or a non-array error to return.
2136 $upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) );
2137 if ( !is_array( $upload_bits_error ) ) {
2138 $upload[ 'error' ] = $upload_bits_error;
2142 $filename = wp_unique_filename( $upload['path'], $name );
2144 $new_file = $upload['path'] . "/$filename";
2145 if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
2146 if ( 0 === strpos( $upload['basedir'], ABSPATH ) )
2147 $error_path = str_replace( ABSPATH, '', $upload['basedir'] ) . $upload['subdir'];
2149 $error_path = basename( $upload['basedir'] ) . $upload['subdir'];
2151 $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $error_path );
2152 return array( 'error' => $message );
2155 $ifp = @ fopen( $new_file, 'wb' );
2157 return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
2159 @fwrite( $ifp, $bits );
2163 // Set correct file permissions
2164 $stat = @ stat( dirname( $new_file ) );
2165 $perms = $stat['mode'] & 0007777;
2166 $perms = $perms & 0000666;
2167 @ chmod( $new_file, $perms );
2171 $url = $upload['url'] . "/$filename";
2173 /** This filter is documented in wp-admin/includes/file.php */
2174 return apply_filters( 'wp_handle_upload', array( 'file' => $new_file, 'url' => $url, 'type' => $wp_filetype['type'], 'error' => false ), 'sideload' );
2178 * Retrieve the file type based on the extension name.
2182 * @param string $ext The extension to search.
2183 * @return string|void The file type, example: audio, video, document, spreadsheet, etc.
2185 function wp_ext2type( $ext ) {
2186 $ext = strtolower( $ext );
2189 * Filter file type based on the extension name.
2193 * @see wp_ext2type()
2195 * @param array $ext2type Multi-dimensional array with extensions for a default set
2198 $ext2type = apply_filters( 'ext2type', array(
2199 'image' => array( 'jpg', 'jpeg', 'jpe', 'gif', 'png', 'bmp', 'tif', 'tiff', 'ico' ),
2200 'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),
2201 'video' => array( '3g2', '3gp', '3gpp', 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),
2202 'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'xps', 'oxps', 'rtf', 'wp', 'wpd', 'psd', 'xcf' ),
2203 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsm', 'xlsb' ),
2204 'interactive' => array( 'swf', 'key', 'ppt', 'pptx', 'pptm', 'pps', 'ppsx', 'ppsm', 'sldx', 'sldm', 'odp' ),
2205 'text' => array( 'asc', 'csv', 'tsv', 'txt' ),
2206 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip', '7z' ),
2207 'code' => array( 'css', 'htm', 'html', 'php', 'js' ),
2210 foreach ( $ext2type as $type => $exts )
2211 if ( in_array( $ext, $exts ) )
2216 * Retrieve the file type from the file name.
2218 * You can optionally define the mime array, if needed.
2222 * @param string $filename File name or path.
2223 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2224 * @return array Values with extension first and mime type.
2226 function wp_check_filetype( $filename, $mimes = null ) {
2227 if ( empty($mimes) )
2228 $mimes = get_allowed_mime_types();
2232 foreach ( $mimes as $ext_preg => $mime_match ) {
2233 $ext_preg = '!\.(' . $ext_preg . ')$!i';
2234 if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
2235 $type = $mime_match;
2236 $ext = $ext_matches[1];
2241 return compact( 'ext', 'type' );
2245 * Attempt to determine the real file type of a file.
2247 * If unable to, the file name extension will be used to determine type.
2249 * If it's determined that the extension does not match the file's real type,
2250 * then the "proper_filename" value will be set with a proper filename and extension.
2252 * Currently this function only supports validating images known to getimagesize().
2256 * @param string $file Full path to the file.
2257 * @param string $filename The name of the file (may differ from $file due to $file being
2258 * in a tmp directory).
2259 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2260 * @return array Values for the extension, MIME, and either a corrected filename or false
2261 * if original $filename is valid.
2263 function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
2264 $proper_filename = false;
2266 // Do basic extension validation and MIME mapping
2267 $wp_filetype = wp_check_filetype( $filename, $mimes );
2268 $ext = $wp_filetype['ext'];
2269 $type = $wp_filetype['type'];
2271 // We can't do any further validation without a file to work with
2272 if ( ! file_exists( $file ) ) {
2273 return compact( 'ext', 'type', 'proper_filename' );
2276 // We're able to validate images using GD
2277 if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) {
2279 // Attempt to figure out what type of image it actually is
2280 $imgstats = @getimagesize( $file );
2282 // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME
2283 if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) {
2285 * Filter the list mapping image mime types to their respective extensions.
2289 * @param array $mime_to_ext Array of image mime types and their matching extensions.
2291 $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array(
2292 'image/jpeg' => 'jpg',
2293 'image/png' => 'png',
2294 'image/gif' => 'gif',
2295 'image/bmp' => 'bmp',
2296 'image/tiff' => 'tif',
2299 // Replace whatever is after the last period in the filename with the correct extension
2300 if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) {
2301 $filename_parts = explode( '.', $filename );
2302 array_pop( $filename_parts );
2303 $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ];
2304 $new_filename = implode( '.', $filename_parts );
2306 if ( $new_filename != $filename ) {
2307 $proper_filename = $new_filename; // Mark that it changed
2309 // Redefine the extension / MIME
2310 $wp_filetype = wp_check_filetype( $new_filename, $mimes );
2311 $ext = $wp_filetype['ext'];
2312 $type = $wp_filetype['type'];
2318 * Filter the "real" file type of the given file.
2322 * @param array $wp_check_filetype_and_ext File data array containing 'ext', 'type', and
2323 * 'proper_filename' keys.
2324 * @param string $file Full path to the file.
2325 * @param string $filename The name of the file (may differ from $file due to
2326 * $file being in a tmp directory).
2327 * @param array $mimes Key is the file extension with value as the mime type.
2329 return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes );
2333 * Retrieve list of mime types and file extensions.
2336 * @since 4.2.0 Support was added for GIMP (xcf) files.
2338 * @return array Array of mime types keyed by the file extension regex corresponding to those types.
2340 function wp_get_mime_types() {
2342 * Filter the list of mime types and file extensions.
2344 * This filter should be used to add, not remove, mime types. To remove
2345 * mime types, use the 'upload_mimes' filter.
2349 * @param array $wp_get_mime_types Mime types keyed by the file extension regex
2350 * corresponding to those types.
2352 return apply_filters( 'mime_types', array(
2354 'jpg|jpeg|jpe' => 'image/jpeg',
2355 'gif' => 'image/gif',
2356 'png' => 'image/png',
2357 'bmp' => 'image/bmp',
2358 'tiff|tif' => 'image/tiff',
2359 'ico' => 'image/x-icon',
2361 'asf|asx' => 'video/x-ms-asf',
2362 'wmv' => 'video/x-ms-wmv',
2363 'wmx' => 'video/x-ms-wmx',
2364 'wm' => 'video/x-ms-wm',
2365 'avi' => 'video/avi',
2366 'divx' => 'video/divx',
2367 'flv' => 'video/x-flv',
2368 'mov|qt' => 'video/quicktime',
2369 'mpeg|mpg|mpe' => 'video/mpeg',
2370 'mp4|m4v' => 'video/mp4',
2371 'ogv' => 'video/ogg',
2372 'webm' => 'video/webm',
2373 'mkv' => 'video/x-matroska',
2374 '3gp|3gpp' => 'video/3gpp', // Can also be audio
2375 '3g2|3gp2' => 'video/3gpp2', // Can also be audio
2377 'txt|asc|c|cc|h|srt' => 'text/plain',
2378 'csv' => 'text/csv',
2379 'tsv' => 'text/tab-separated-values',
2380 'ics' => 'text/calendar',
2381 'rtx' => 'text/richtext',
2382 'css' => 'text/css',
2383 'htm|html' => 'text/html',
2384 'vtt' => 'text/vtt',
2385 'dfxp' => 'application/ttaf+xml',
2387 'mp3|m4a|m4b' => 'audio/mpeg',
2388 'ra|ram' => 'audio/x-realaudio',
2389 'wav' => 'audio/wav',
2390 'ogg|oga' => 'audio/ogg',
2391 'mid|midi' => 'audio/midi',
2392 'wma' => 'audio/x-ms-wma',
2393 'wax' => 'audio/x-ms-wax',
2394 'mka' => 'audio/x-matroska',
2395 // Misc application formats.
2396 'rtf' => 'application/rtf',
2397 'js' => 'application/javascript',
2398 'pdf' => 'application/pdf',
2399 'swf' => 'application/x-shockwave-flash',
2400 'class' => 'application/java',
2401 'tar' => 'application/x-tar',
2402 'zip' => 'application/zip',
2403 'gz|gzip' => 'application/x-gzip',
2404 'rar' => 'application/rar',
2405 '7z' => 'application/x-7z-compressed',
2406 'exe' => 'application/x-msdownload',
2407 'psd' => 'application/octet-stream',
2408 'xcf' => 'application/octet-stream',
2409 // MS Office formats.
2410 'doc' => 'application/msword',
2411 'pot|pps|ppt' => 'application/vnd.ms-powerpoint',
2412 'wri' => 'application/vnd.ms-write',
2413 'xla|xls|xlt|xlw' => 'application/vnd.ms-excel',
2414 'mdb' => 'application/vnd.ms-access',
2415 'mpp' => 'application/vnd.ms-project',
2416 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
2417 'docm' => 'application/vnd.ms-word.document.macroEnabled.12',
2418 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
2419 'dotm' => 'application/vnd.ms-word.template.macroEnabled.12',
2420 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
2421 'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12',
2422 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
2423 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
2424 'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12',
2425 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12',
2426 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
2427 'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12',
2428 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
2429 'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12',
2430 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template',
2431 'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12',
2432 'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12',
2433 'sldx' => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
2434 'sldm' => 'application/vnd.ms-powerpoint.slide.macroEnabled.12',
2435 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',
2436 'oxps' => 'application/oxps',
2437 'xps' => 'application/vnd.ms-xpsdocument',
2438 // OpenOffice formats.
2439 'odt' => 'application/vnd.oasis.opendocument.text',
2440 'odp' => 'application/vnd.oasis.opendocument.presentation',
2441 'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
2442 'odg' => 'application/vnd.oasis.opendocument.graphics',
2443 'odc' => 'application/vnd.oasis.opendocument.chart',
2444 'odb' => 'application/vnd.oasis.opendocument.database',
2445 'odf' => 'application/vnd.oasis.opendocument.formula',
2446 // WordPerfect formats.
2447 'wp|wpd' => 'application/wordperfect',
2449 'key' => 'application/vnd.apple.keynote',
2450 'numbers' => 'application/vnd.apple.numbers',
2451 'pages' => 'application/vnd.apple.pages',
2455 * Retrieve list of allowed mime types and file extensions.
2459 * @param int|WP_User $user Optional. User to check. Defaults to current user.
2460 * @return array Array of mime types keyed by the file extension regex corresponding
2463 function get_allowed_mime_types( $user = null ) {
2464 $t = wp_get_mime_types();
2466 unset( $t['swf'], $t['exe'] );
2467 if ( function_exists( 'current_user_can' ) )
2468 $unfiltered = $user ? user_can( $user, 'unfiltered_html' ) : current_user_can( 'unfiltered_html' );
2470 if ( empty( $unfiltered ) )
2471 unset( $t['htm|html'] );
2474 * Filter list of allowed mime types and file extensions.
2478 * @param array $t Mime types keyed by the file extension regex corresponding to
2479 * those types. 'swf' and 'exe' removed from full list. 'htm|html' also
2480 * removed depending on '$user' capabilities.
2481 * @param int|WP_User|null $user User ID, User object or null if not provided (indicates current user).
2483 return apply_filters( 'upload_mimes', $t, $user );
2487 * Display "Are You Sure" message to confirm the action being taken.
2489 * If the action has the nonce explain message, then it will be displayed
2490 * along with the "Are you sure?" message.
2494 * @param string $action The nonce action.
2496 function wp_nonce_ays( $action ) {
2497 if ( 'log-out' == $action ) {
2498 $html = sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'name' ) ) . '</p><p>';
2499 $redirect_to = isset( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : '';
2500 $html .= sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url( $redirect_to ) );
2502 $html = __( 'Are you sure you want to do this?' );
2503 if ( wp_get_referer() )
2504 $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
2507 wp_die( $html, __( 'WordPress Failure Notice' ), 403 );
2511 * Kill WordPress execution and display HTML message with error message.
2513 * This function complements the `die()` PHP function. The difference is that
2514 * HTML will be displayed to the user. It is recommended to use this function
2515 * only when the execution should not continue any further. It is not recommended
2516 * to call this function very often, and try to handle as many errors as possible
2517 * silently or more gracefully.
2519 * As a shorthand, the desired HTTP response code may be passed as an integer to
2520 * the `$title` parameter (the default title would apply) or the `$args` parameter.
2523 * @since 4.1.0 The `$title` and `$args` parameters were changed to optionally accept
2524 * an integer to be used as the response code.
2526 * @param string|WP_Error $message Optional. Error message. If this is a {@see WP_Error} object,
2527 * the error's messages are used. Default empty.
2528 * @param string|int $title Optional. Error title. If `$message` is a `WP_Error` object,
2529 * error data with the key 'title' may be used to specify the title.
2530 * If `$title` is an integer, then it is treated as the response
2531 * code. Default empty.
2532 * @param string|array|int $args {
2533 * Optional. Arguments to control behavior. If `$args` is an integer, then it is treated
2534 * as the response code. Default empty array.
2536 * @type int $response The HTTP response code. Default 500.
2537 * @type bool $back_link Whether to include a link to go back. Default false.
2538 * @type string $text_direction The text direction. This is only useful internally, when WordPress
2539 * is still loading and the site's locale is not set up yet. Accepts 'rtl'.
2540 * Default is the value of {@see is_rtl()}.
2543 function wp_die( $message = '', $title = '', $args = array() ) {
2545 if ( is_int( $args ) ) {
2546 $args = array( 'response' => $args );
2547 } elseif ( is_int( $title ) ) {
2548 $args = array( 'response' => $title );
2552 if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
2554 * Filter callback for killing WordPress execution for AJAX requests.
2558 * @param callable $function Callback function name.
2560 $function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' );
2561 } elseif ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) {
2563 * Filter callback for killing WordPress execution for XML-RPC requests.
2567 * @param callable $function Callback function name.
2569 $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' );
2572 * Filter callback for killing WordPress execution for all non-AJAX, non-XML-RPC requests.
2576 * @param callable $function Callback function name.
2578 $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' );
2581 call_user_func( $function, $message, $title, $args );
2585 * Kill WordPress execution and display HTML message with error message.
2587 * This is the default handler for wp_die if you want a custom one for your
2588 * site then you can overload using the wp_die_handler filter in wp_die
2593 * @param string $message Error message.
2594 * @param string $title Optional. Error title. Default empty.
2595 * @param string|array $args Optional. Arguments to control behavior. Default empty array.
2597 function _default_wp_die_handler( $message, $title = '', $args = array() ) {
2598 $defaults = array( 'response' => 500 );
2599 $r = wp_parse_args($args, $defaults);
2601 $have_gettext = function_exists('__');
2603 if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
2604 if ( empty( $title ) ) {
2605 $error_data = $message->get_error_data();
2606 if ( is_array( $error_data ) && isset( $error_data['title'] ) )
2607 $title = $error_data['title'];
2609 $errors = $message->get_error_messages();
2610 switch ( count( $errors ) ) {
2615 $message = "<p>{$errors[0]}</p>";
2618 $message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
2621 } elseif ( is_string( $message ) ) {
2622 $message = "<p>$message</p>";
2625 if ( isset( $r['back_link'] ) && $r['back_link'] ) {
2626 $back_text = $have_gettext? __('« Back') : '« Back';
2627 $message .= "\n<p><a href='javascript:history.back()'>$back_text</a></p>";
2630 if ( ! did_action( 'admin_head' ) ) :
2631 if ( !headers_sent() ) {
2632 status_header( $r['response'] );
2634 header( 'Content-Type: text/html; charset=utf-8' );
2637 if ( empty($title) )
2638 $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error';
2640 $text_direction = 'ltr';
2641 if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] )
2642 $text_direction = 'rtl';
2643 elseif ( function_exists( 'is_rtl' ) && is_rtl() )
2644 $text_direction = 'rtl';
2647 <!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono
2649 <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>>
2651 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
2652 <meta name="viewport" content="width=device-width">
2653 <title><?php echo $title ?></title>
2654 <style type="text/css">
2656 background: #f1f1f1;
2661 font-family: "Open Sans", sans-serif;
2665 -webkit-box-shadow: 0 1px 3px rgba(0,0,0,0.13);
2666 box-shadow: 0 1px 3px rgba(0,0,0,0.13);
2669 border-bottom: 1px solid #dadada;
2672 font: 24px "Open Sans", sans-serif;
2675 padding-bottom: 7px;
2683 margin: 25px 0 20px;
2686 font-family: Consolas, Monaco, monospace;
2689 margin-bottom: 10px;
2703 0 0 2px 1px rgba(30, 140, 190, .8);
2706 0 0 2px 1px rgba(30, 140, 190, .8);
2710 background: #f7f7f7;
2711 border: 1px solid #ccc;
2713 display: inline-block;
2714 text-decoration: none;
2719 padding: 0 10px 1px;
2721 -webkit-border-radius: 3px;
2722 -webkit-appearance: none;
2724 white-space: nowrap;
2725 -webkit-box-sizing: border-box;
2726 -moz-box-sizing: border-box;
2727 box-sizing: border-box;
2729 -webkit-box-shadow: 0 1px 0 #ccc;
2730 box-shadow: 0 1px 0 #ccc;
2731 vertical-align: top;
2734 .button.button-large {
2737 padding: 0 12px 2px;
2742 background: #fafafa;
2748 border-color: #5b9dd9;
2749 -webkit-box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
2750 box-shadow: 0 0 3px rgba( 0, 115, 170, .8 );
2757 -webkit-box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
2758 box-shadow: inset 0 2px 5px -3px rgba( 0, 0, 0, 0.5 );
2759 -webkit-transform: translateY(1px);
2760 -ms-transform: translateY(1px);
2761 transform: translateY(1px);
2765 if ( 'rtl' == $text_direction ) {
2766 echo 'body { font-family: Tahoma, Arial; }';
2771 <body id="error-page">
2772 <?php endif; // ! did_action( 'admin_head' ) ?>
2773 <?php echo $message; ?>
2781 * Kill WordPress execution and display XML message with error message.
2783 * This is the handler for wp_die when processing XMLRPC requests.
2788 * @global wp_xmlrpc_server $wp_xmlrpc_server
2790 * @param string $message Error message.
2791 * @param string $title Optional. Error title. Default empty.
2792 * @param string|array $args Optional. Arguments to control behavior. Default empty array.
2794 function _xmlrpc_wp_die_handler( $message, $title = '', $args = array() ) {
2795 global $wp_xmlrpc_server;
2796 $defaults = array( 'response' => 500 );
2798 $r = wp_parse_args($args, $defaults);
2800 if ( $wp_xmlrpc_server ) {
2801 $error = new IXR_Error( $r['response'] , $message);
2802 $wp_xmlrpc_server->output( $error->getXml() );
2808 * Kill WordPress ajax execution.
2810 * This is the handler for wp_die when processing Ajax requests.
2815 * @param string $message Optional. Response to print. Default empty.
2817 function _ajax_wp_die_handler( $message = '' ) {
2818 if ( is_scalar( $message ) )
2819 die( (string) $message );
2824 * Kill WordPress execution.
2826 * This is the handler for wp_die when processing APP requests.
2831 * @param string $message Optional. Response to print. Default empty.
2833 function _scalar_wp_die_handler( $message = '' ) {
2834 if ( is_scalar( $message ) )
2835 die( (string) $message );
2840 * Encode a variable into JSON, with some sanity checks.
2844 * @param mixed $data Variable (usually an array or object) to encode as JSON.
2845 * @param int $options Optional. Options to be passed to json_encode(). Default 0.
2846 * @param int $depth Optional. Maximum depth to walk through $data. Must be
2847 * greater than 0. Default 512.
2848 * @return string|false The JSON encoded string, or false if it cannot be encoded.
2850 function wp_json_encode( $data, $options = 0, $depth = 512 ) {
2852 * json_encode() has had extra params added over the years.
2853 * $options was added in 5.3, and $depth in 5.5.
2854 * We need to make sure we call it with the correct arguments.
2856 if ( version_compare( PHP_VERSION, '5.5', '>=' ) ) {
2857 $args = array( $data, $options, $depth );
2858 } elseif ( version_compare( PHP_VERSION, '5.3', '>=' ) ) {
2859 $args = array( $data, $options );
2861 $args = array( $data );
2864 // Prepare the data for JSON serialization.
2865 $data = _wp_json_prepare_data( $data );
2867 $json = @call_user_func_array( 'json_encode', $args );
2869 // If json_encode() was successful, no need to do more sanity checking.
2870 // ... unless we're in an old version of PHP, and json_encode() returned
2871 // a string containing 'null'. Then we need to do more sanity checking.
2872 if ( false !== $json && ( version_compare( PHP_VERSION, '5.5', '>=' ) || false === strpos( $json, 'null' ) ) ) {
2877 $args[0] = _wp_json_sanity_check( $data, $depth );
2878 } catch ( Exception $e ) {
2882 return call_user_func_array( 'json_encode', $args );
2886 * Perform sanity checks on data that shall be encoded to JSON.
2892 * @see wp_json_encode()
2894 * @param mixed $data Variable (usually an array or object) to encode as JSON.
2895 * @param int $depth Maximum depth to walk through $data. Must be greater than 0.
2896 * @return mixed The sanitized data that shall be encoded to JSON.
2898 function _wp_json_sanity_check( $data, $depth ) {
2900 throw new Exception( 'Reached depth limit' );
2903 if ( is_array( $data ) ) {
2905 foreach ( $data as $id => $el ) {
2906 // Don't forget to sanitize the ID!
2907 if ( is_string( $id ) ) {
2908 $clean_id = _wp_json_convert_string( $id );
2913 // Check the element type, so that we're only recursing if we really have to.
2914 if ( is_array( $el ) || is_object( $el ) ) {
2915 $output[ $clean_id ] = _wp_json_sanity_check( $el, $depth - 1 );
2916 } elseif ( is_string( $el ) ) {
2917 $output[ $clean_id ] = _wp_json_convert_string( $el );
2919 $output[ $clean_id ] = $el;
2922 } elseif ( is_object( $data ) ) {
2923 $output = new stdClass;
2924 foreach ( $data as $id => $el ) {
2925 if ( is_string( $id ) ) {
2926 $clean_id = _wp_json_convert_string( $id );
2931 if ( is_array( $el ) || is_object( $el ) ) {
2932 $output->$clean_id = _wp_json_sanity_check( $el, $depth - 1 );
2933 } elseif ( is_string( $el ) ) {
2934 $output->$clean_id = _wp_json_convert_string( $el );
2936 $output->$clean_id = $el;
2939 } elseif ( is_string( $data ) ) {
2940 return _wp_json_convert_string( $data );
2949 * Convert a string to UTF-8, so that it can be safely encoded to JSON.
2955 * @see _wp_json_sanity_check()
2957 * @staticvar bool $use_mb
2959 * @param string $string The string which is to be converted.
2960 * @return string The checked string.
2962 function _wp_json_convert_string( $string ) {
2963 static $use_mb = null;
2964 if ( is_null( $use_mb ) ) {
2965 $use_mb = function_exists( 'mb_convert_encoding' );
2969 $encoding = mb_detect_encoding( $string, mb_detect_order(), true );
2971 return mb_convert_encoding( $string, 'UTF-8', $encoding );
2973 return mb_convert_encoding( $string, 'UTF-8', 'UTF-8' );
2976 return wp_check_invalid_utf8( $string, true );
2981 * Prepares response data to be serialized to JSON.
2983 * This supports the JsonSerializable interface for PHP 5.2-5.3 as well.
2989 * @param mixed $data Native representation.
2990 * @return bool|int|float|null|string|array Data ready for `json_encode()`.
2992 function _wp_json_prepare_data( $data ) {
2993 if ( ! defined( 'WP_JSON_SERIALIZE_COMPATIBLE' ) || WP_JSON_SERIALIZE_COMPATIBLE === false ) {
2997 switch ( gettype( $data ) ) {
3003 // These values can be passed through.
3007 // Arrays must be mapped in case they also return objects.
3008 return array_map( '_wp_json_prepare_data', $data );
3011 // If this is an incomplete object (__PHP_Incomplete_Class), bail.
3012 if ( ! is_object( $data ) ) {
3016 if ( $data instanceof JsonSerializable ) {
3017 $data = $data->jsonSerialize();
3019 $data = get_object_vars( $data );
3022 // Now, pass the array (or whatever was returned from jsonSerialize through).
3023 return _wp_json_prepare_data( $data );
3031 * Send a JSON response back to an Ajax request.
3035 * @param mixed $response Variable (usually an array or object) to encode as JSON,
3036 * then print and die.
3038 function wp_send_json( $response ) {
3039 @header( 'Content-Type: application/json; charset=' . get_option( 'blog_charset' ) );
3040 echo wp_json_encode( $response );
3041 if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
3048 * Send a JSON response back to an Ajax request, indicating success.
3052 * @param mixed $data Data to encode as JSON, then print and die.
3054 function wp_send_json_success( $data = null ) {
3055 $response = array( 'success' => true );
3057 if ( isset( $data ) )
3058 $response['data'] = $data;
3060 wp_send_json( $response );
3064 * Send a JSON response back to an Ajax request, indicating failure.
3066 * If the `$data` parameter is a {@see WP_Error} object, the errors
3067 * within the object are processed and output as an array of error
3068 * codes and corresponding messages. All other types are output
3069 * without further processing.
3072 * @since 4.1.0 The `$data` parameter is now processed if a {@see WP_Error}
3073 * object is passed in.
3075 * @param mixed $data Data to encode as JSON, then print and die.
3077 function wp_send_json_error( $data = null ) {
3078 $response = array( 'success' => false );
3080 if ( isset( $data ) ) {
3081 if ( is_wp_error( $data ) ) {
3083 foreach ( $data->errors as $code => $messages ) {
3084 foreach ( $messages as $message ) {
3085 $result[] = array( 'code' => $code, 'message' => $message );
3089 $response['data'] = $result;
3091 $response['data'] = $data;
3095 wp_send_json( $response );
3099 * Retrieve the WordPress home page URL.
3101 * If the constant named 'WP_HOME' exists, then it will be used and returned
3102 * by the function. This can be used to counter the redirection on your local
3103 * development environment.
3110 * @param string $url URL for the home location.
3111 * @return string Homepage location.
3113 function _config_wp_home( $url = '' ) {
3114 if ( defined( 'WP_HOME' ) )
3115 return untrailingslashit( WP_HOME );
3120 * Retrieve the WordPress site URL.
3122 * If the constant named 'WP_SITEURL' is defined, then the value in that
3123 * constant will always be returned. This can be used for debugging a site
3124 * on your localhost while not having to change the database to your URL.
3131 * @param string $url URL to set the WordPress site location.
3132 * @return string The WordPress Site URL.
3134 function _config_wp_siteurl( $url = '' ) {
3135 if ( defined( 'WP_SITEURL' ) )
3136 return untrailingslashit( WP_SITEURL );
3141 * Set the localized direction for MCE plugin.
3143 * Will only set the direction to 'rtl', if the WordPress locale has
3144 * the text direction set to 'rtl'.
3146 * Fills in the 'directionality' setting, enables the 'directionality'
3147 * plugin, and adds the 'ltr' button to 'toolbar1', formerly
3148 * 'theme_advanced_buttons1' array keys. These keys are then returned
3149 * in the $input (TinyMCE settings) array.
3154 * @param array $input MCE settings array.
3155 * @return array Direction set for 'rtl', if needed by locale.
3157 function _mce_set_direction( $input ) {
3159 $input['directionality'] = 'rtl';
3161 if ( ! empty( $input['plugins'] ) && strpos( $input['plugins'], 'directionality' ) === false ) {
3162 $input['plugins'] .= ',directionality';
3165 if ( ! empty( $input['toolbar1'] ) && ! preg_match( '/\bltr\b/', $input['toolbar1'] ) ) {
3166 $input['toolbar1'] .= ',ltr';
3175 * Convert smiley code to the icon graphic file equivalent.
3177 * You can turn off smilies, by going to the write setting screen and unchecking
3178 * the box, or by setting 'use_smilies' option to false or removing the option.
3180 * Plugins may override the default smiley list by setting the $wpsmiliestrans
3181 * to an array, with the key the code the blogger types in and the value the
3184 * The $wp_smiliessearch global is for the regular expression and is set each
3185 * time the function is called.
3187 * The full list of smilies can be found in the function and won't be listed in
3188 * the description. Probably should create a Codex page for it, so that it is
3191 * @global array $wpsmiliestrans
3192 * @global array $wp_smiliessearch
3196 function smilies_init() {
3197 global $wpsmiliestrans, $wp_smiliessearch;
3199 // don't bother setting up smilies if they are disabled
3200 if ( !get_option( 'use_smilies' ) )
3203 if ( !isset( $wpsmiliestrans ) ) {
3204 $wpsmiliestrans = array(
3205 ':mrgreen:' => 'mrgreen.png',
3206 ':neutral:' => "\xf0\x9f\x98\x90",
3207 ':twisted:' => "\xf0\x9f\x98\x88",
3208 ':arrow:' => "\xe2\x9e\xa1",
3209 ':shock:' => "\xf0\x9f\x98\xaf",
3210 ':smile:' => "\xf0\x9f\x99\x82",
3211 ':???:' => "\xf0\x9f\x98\x95",
3212 ':cool:' => "\xf0\x9f\x98\x8e",
3213 ':evil:' => "\xf0\x9f\x91\xbf",
3214 ':grin:' => "\xf0\x9f\x98\x80",
3215 ':idea:' => "\xf0\x9f\x92\xa1",
3216 ':oops:' => "\xf0\x9f\x98\xb3",
3217 ':razz:' => "\xf0\x9f\x98\x9b",
3218 ':roll:' => 'rolleyes.png',
3219 ':wink:' => "\xf0\x9f\x98\x89",
3220 ':cry:' => "\xf0\x9f\x98\xa5",
3221 ':eek:' => "\xf0\x9f\x98\xae",
3222 ':lol:' => "\xf0\x9f\x98\x86",
3223 ':mad:' => "\xf0\x9f\x98\xa1",
3224 ':sad:' => "\xf0\x9f\x99\x81",
3225 '8-)' => "\xf0\x9f\x98\x8e",
3226 '8-O' => "\xf0\x9f\x98\xaf",
3227 ':-(' => "\xf0\x9f\x99\x81",
3228 ':-)' => "\xf0\x9f\x99\x82",
3229 ':-?' => "\xf0\x9f\x98\x95",
3230 ':-D' => "\xf0\x9f\x98\x80",
3231 ':-P' => "\xf0\x9f\x98\x9b",
3232 ':-o' => "\xf0\x9f\x98\xae",
3233 ':-x' => "\xf0\x9f\x98\xa1",
3234 ':-|' => "\xf0\x9f\x98\x90",
3235 ';-)' => "\xf0\x9f\x98\x89",
3236 // This one transformation breaks regular text with frequency.
3237 // '8)' => "\xf0\x9f\x98\x8e",
3238 '8O' => "\xf0\x9f\x98\xaf",
3239 ':(' => "\xf0\x9f\x99\x81",
3240 ':)' => "\xf0\x9f\x99\x82",
3241 ':?' => "\xf0\x9f\x98\x95",
3242 ':D' => "\xf0\x9f\x98\x80",
3243 ':P' => "\xf0\x9f\x98\x9b",
3244 ':o' => "\xf0\x9f\x98\xae",
3245 ':x' => "\xf0\x9f\x98\xa1",
3246 ':|' => "\xf0\x9f\x98\x90",
3247 ';)' => "\xf0\x9f\x98\x89",
3248 ':!:' => "\xe2\x9d\x97",
3249 ':?:' => "\xe2\x9d\x93",
3253 if (count($wpsmiliestrans) == 0) {
3258 * NOTE: we sort the smilies in reverse key order. This is to make sure
3259 * we match the longest possible smilie (:???: vs :?) as the regular
3260 * expression used below is first-match
3262 krsort($wpsmiliestrans);
3264 $spaces = wp_spaces_regexp();
3266 // Begin first "subpattern"
3267 $wp_smiliessearch = '/(?<=' . $spaces . '|^)';
3270 foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
3271 $firstchar = substr($smiley, 0, 1);
3272 $rest = substr($smiley, 1);
3275 if ($firstchar != $subchar) {
3276 if ($subchar != '') {
3277 $wp_smiliessearch .= ')(?=' . $spaces . '|$)'; // End previous "subpattern"
3278 $wp_smiliessearch .= '|(?<=' . $spaces . '|^)'; // Begin another "subpattern"
3280 $subchar = $firstchar;
3281 $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';
3283 $wp_smiliessearch .= '|';
3285 $wp_smiliessearch .= preg_quote($rest, '/');
3288 $wp_smiliessearch .= ')(?=' . $spaces . '|$)/m';
3293 * Merge user defined arguments into defaults array.
3295 * This function is used throughout WordPress to allow for both string or array
3296 * to be merged into another array.
3300 * @param string|array $args Value to merge with $defaults
3301 * @param array $defaults Optional. Array that serves as the defaults. Default empty.
3302 * @return array Merged user defined values with defaults.
3304 function wp_parse_args( $args, $defaults = '' ) {
3305 if ( is_object( $args ) )
3306 $r = get_object_vars( $args );
3307 elseif ( is_array( $args ) )
3310 wp_parse_str( $args, $r );
3312 if ( is_array( $defaults ) )
3313 return array_merge( $defaults, $r );
3318 * Clean up an array, comma- or space-separated list of IDs.
3322 * @param array|string $list List of ids.
3323 * @return array Sanitized array of IDs.
3325 function wp_parse_id_list( $list ) {
3326 if ( !is_array($list) )
3327 $list = preg_split('/[\s,]+/', $list);
3329 return array_unique(array_map('absint', $list));
3333 * Extract a slice of an array, given a list of keys.
3337 * @param array $array The original array.
3338 * @param array $keys The list of keys.
3339 * @return array The array slice.
3341 function wp_array_slice_assoc( $array, $keys ) {
3343 foreach ( $keys as $key )
3344 if ( isset( $array[ $key ] ) )
3345 $slice[ $key ] = $array[ $key ];
3351 * Determines if the variable is a numeric-indexed array.
3355 * @param mixed $data Variable to check.
3356 * @return bool Whether the variable is a list.
3358 function wp_is_numeric_array( $data ) {
3359 if ( ! is_array( $data ) ) {
3363 $keys = array_keys( $data );
3364 $string_keys = array_filter( $keys, 'is_string' );
3365 return count( $string_keys ) === 0;
3369 * Filters a list of objects, based on a set of key => value arguments.
3373 * @param array $list An array of objects to filter
3374 * @param array $args Optional. An array of key => value arguments to match
3375 * against each object. Default empty array.
3376 * @param string $operator Optional. The logical operation to perform. 'or' means
3377 * only one element from the array needs to match; 'and'
3378 * means all elements must match; 'not' means no elements may
3379 * match. Default 'and'.
3380 * @param bool|string $field A field from the object to place instead of the entire object.
3382 * @return array A list of objects or object fields.
3384 function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) {
3385 if ( ! is_array( $list ) )
3388 $list = wp_list_filter( $list, $args, $operator );
3391 $list = wp_list_pluck( $list, $field );
3397 * Filters a list of objects, based on a set of key => value arguments.
3401 * @param array $list An array of objects to filter.
3402 * @param array $args Optional. An array of key => value arguments to match
3403 * against each object. Default empty array.
3404 * @param string $operator Optional. The logical operation to perform. 'AND' means
3405 * all elements from the array must match. 'OR' means only
3406 * one element needs to match. 'NOT' means no elements may
3407 * match. Default 'AND'.
3408 * @return array Array of found values.
3410 function wp_list_filter( $list, $args = array(), $operator = 'AND' ) {
3411 if ( ! is_array( $list ) )
3414 if ( empty( $args ) )
3417 $operator = strtoupper( $operator );
3418 $count = count( $args );
3419 $filtered = array();
3421 foreach ( $list as $key => $obj ) {
3422 $to_match = (array) $obj;
3425 foreach ( $args as $m_key => $m_value ) {
3426 if ( array_key_exists( $m_key, $to_match ) && $m_value == $to_match[ $m_key ] )
3430 if ( ( 'AND' == $operator && $matched == $count )
3431 || ( 'OR' == $operator && $matched > 0 )
3432 || ( 'NOT' == $operator && 0 == $matched ) ) {
3433 $filtered[$key] = $obj;
3441 * Pluck a certain field out of each object in a list.
3443 * This has the same functionality and prototype of
3444 * array_column() (PHP 5.5) but also supports objects.
3447 * @since 4.0.0 $index_key parameter added.
3449 * @param array $list List of objects or arrays
3450 * @param int|string $field Field from the object to place instead of the entire object
3451 * @param int|string $index_key Optional. Field from the object to use as keys for the new array.
3453 * @return array Array of found values. If `$index_key` is set, an array of found values with keys
3454 * corresponding to `$index_key`. If `$index_key` is null, array keys from the original
3455 * `$list` will be preserved in the results.
3457 function wp_list_pluck( $list, $field, $index_key = null ) {
3458 if ( ! $index_key ) {
3460 * This is simple. Could at some point wrap array_column()
3461 * if we knew we had an array of arrays.
3463 foreach ( $list as $key => $value ) {
3464 if ( is_object( $value ) ) {
3465 $list[ $key ] = $value->$field;
3467 $list[ $key ] = $value[ $field ];
3474 * When index_key is not set for a particular item, push the value
3475 * to the end of the stack. This is how array_column() behaves.
3478 foreach ( $list as $value ) {
3479 if ( is_object( $value ) ) {
3480 if ( isset( $value->$index_key ) ) {
3481 $newlist[ $value->$index_key ] = $value->$field;
3483 $newlist[] = $value->$field;
3486 if ( isset( $value[ $index_key ] ) ) {
3487 $newlist[ $value[ $index_key ] ] = $value[ $field ];
3489 $newlist[] = $value[ $field ];
3498 * Determines if Widgets library should be loaded.
3500 * Checks to make sure that the widgets library hasn't already been loaded.
3501 * If it hasn't, then it will load the widgets library and run an action hook.
3505 function wp_maybe_load_widgets() {
3507 * Filter whether to load the Widgets library.
3509 * Passing a falsey value to the filter will effectively short-circuit
3510 * the Widgets library from loading.
3514 * @param bool $wp_maybe_load_widgets Whether to load the Widgets library.
3517 if ( ! apply_filters( 'load_default_widgets', true ) ) {
3521 require_once( ABSPATH . WPINC . '/default-widgets.php' );
3523 add_action( '_admin_menu', 'wp_widgets_add_menu' );
3527 * Append the Widgets menu to the themes main menu.
3531 * @global array $submenu
3533 function wp_widgets_add_menu() {
3536 if ( ! current_theme_supports( 'widgets' ) )
3539 $submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' );
3540 ksort( $submenu['themes.php'], SORT_NUMERIC );
3544 * Flush all output buffers for PHP 5.2.
3546 * Make sure all output buffers are flushed before our singletons are destroyed.
3550 function wp_ob_end_flush_all() {
3551 $levels = ob_get_level();
3552 for ($i=0; $i<$levels; $i++)
3557 * Load custom DB error or display WordPress DB error.
3559 * If a file exists in the wp-content directory named db-error.php, then it will
3560 * be loaded instead of displaying the WordPress DB error. If it is not found,
3561 * then the WordPress DB error will be displayed instead.
3563 * The WordPress DB error sets the HTTP status header to 500 to try to prevent
3564 * search engines from caching the message. Custom DB messages should do the
3567 * This function was backported to WordPress 2.3.2, but originally was added
3568 * in WordPress 2.5.0.
3572 * @global wpdb $wpdb WordPress database abstraction object.
3574 function dead_db() {
3577 wp_load_translations_early();
3579 // Load custom DB error template, if present.
3580 if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {
3581 require_once( WP_CONTENT_DIR . '/db-error.php' );
3585 // If installing or in the admin, provide the verbose message.
3586 if ( wp_installing() || defined( 'WP_ADMIN' ) )
3587 wp_die($wpdb->error);
3589 // Otherwise, be terse.
3590 status_header( 500 );
3592 header( 'Content-Type: text/html; charset=utf-8' );
3595 <html xmlns="http://www.w3.org/1999/xhtml"<?php if ( is_rtl() ) echo ' dir="rtl"'; ?>>
3597 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
3598 <title><?php _e( 'Database Error' ); ?></title>
3602 <h1><?php _e( 'Error establishing a database connection' ); ?></h1>
3610 * Convert a value to non-negative integer.
3614 * @param mixed $maybeint Data you wish to have converted to a non-negative integer.
3615 * @return int A non-negative integer.
3617 function absint( $maybeint ) {
3618 return abs( intval( $maybeint ) );
3622 * Mark a function as deprecated and inform when it has been used.
3624 * There is a hook deprecated_function_run that will be called that can be used
3625 * to get the backtrace up to what file and function called the deprecated
3628 * The current behavior is to trigger a user error if WP_DEBUG is true.
3630 * This function is to be used in every function that is deprecated.
3635 * @param string $function The function that was called.
3636 * @param string $version The version of WordPress that deprecated the function.
3637 * @param string $replacement Optional. The function that should have been called. Default null.
3639 function _deprecated_function( $function, $version, $replacement = null ) {
3642 * Fires when a deprecated function is called.
3646 * @param string $function The function that was called.
3647 * @param string $replacement The function that should have been called.
3648 * @param string $version The version of WordPress that deprecated the function.
3650 do_action( 'deprecated_function_run', $function, $replacement, $version );
3653 * Filter whether to trigger an error for deprecated functions.
3657 * @param bool $trigger Whether to trigger the error for deprecated functions. Default true.
3659 if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) {
3660 if ( function_exists( '__' ) ) {
3661 if ( ! is_null( $replacement ) )
3662 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
3664 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
3666 if ( ! is_null( $replacement ) )
3667 trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.', $function, $version, $replacement ) );
3669 trigger_error( sprintf( '%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.', $function, $version ) );
3675 * Marks a constructor as deprecated and informs when it has been used.
3677 * Similar to _deprecated_function(), but with different strings. Used to
3678 * remove PHP4 style constructors.
3680 * The current behavior is to trigger a user error if `WP_DEBUG` is true.
3682 * This function is to be used in every PHP4 style constructor method that is deprecated.
3685 * @since 4.5.0 Added the `$parent_class` parameter.
3689 * @param string $class The class containing the deprecated constructor.
3690 * @param string $version The version of WordPress that deprecated the function.
3691 * @param string $parent_class Optional. The parent class calling the deprecated constructor.
3692 * Default empty string.
3694 function _deprecated_constructor( $class, $version, $parent_class = '' ) {
3697 * Fires when a deprecated constructor is called.
3700 * @since 4.5.0 Added the `$parent_class` parameter.
3702 * @param string $class The class containing the deprecated constructor.
3703 * @param string $version The version of WordPress that deprecated the function.
3704 * @param string $parent_class The parent class calling the deprecated constructor.
3706 do_action( 'deprecated_constructor_run', $class, $version, $parent_class );
3709 * Filter whether to trigger an error for deprecated functions.