9 * Converts MySQL DATETIME field to user specified date format.
11 * If $dateformatstring has 'G' value, then gmmktime() function will be used to
12 * make the time. If $dateformatstring is set to 'U', then mktime() function
13 * will be used to make the time.
15 * The $translate will only be used, if it is set to true and it is by default
16 * and if the $wp_locale object has the month and weekday set.
20 * @param string $dateformatstring Either 'G', 'U', or php date format.
21 * @param string $mysqlstring Time from mysql DATETIME field.
22 * @param bool $translate Optional. Default is true. Will switch format to locale.
23 * @return string Date formatted by $dateformatstring or locale (if available).
25 function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) {
30 if ( 'G' == $dateformatstring )
31 return strtotime( $m . ' +0000' );
35 if ( 'U' == $dateformatstring )
39 return date_i18n( $dateformatstring, $i );
41 return date( $dateformatstring, $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.
50 * If $gmt is set to either '1' or 'true', then both types will use GMT time.
51 * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
55 * @param string $type Either 'mysql' or 'timestamp'.
56 * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false.
57 * @return int|string String if $type is 'gmt', int if $type is 'timestamp'.
59 function current_time( $type, $gmt = 0 ) {
62 return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
65 return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
71 * Retrieve the date in localized format, based on timestamp.
73 * If the locale specifies the locale month and weekday, then the locale will
74 * take over the format for the date. If it isn't, then the date format string
75 * will be used instead.
79 * @param string $dateformatstring Format to display the date.
80 * @param int $unixtimestamp Optional. Unix timestamp.
81 * @param bool $gmt Optional, default is false. Whether to convert to GMT for time.
82 * @return string The date, translated if locale specifies it.
84 function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
90 $i = current_time( 'timestamp' );
93 // we should not let date() interfere with our
94 // specially computed timestamp
98 // store original value for language with untypical grammars
99 // see http://core.trac.wordpress.org/ticket/9396
100 $req_format = $dateformatstring;
102 $datefunc = $gmt? 'gmdate' : 'date';
104 if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
105 $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );
106 $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
107 $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );
108 $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
109 $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );
110 $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );
111 $dateformatstring = ' '.$dateformatstring;
112 $dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
113 $dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
114 $dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
115 $dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
116 $dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
117 $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );
119 $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
121 $timezone_formats = array( 'P', 'I', 'O', 'T', 'Z', 'e' );
122 $timezone_formats_re = implode( '|', $timezone_formats );
123 if ( preg_match( "/$timezone_formats_re/", $dateformatstring ) ) {
124 $timezone_string = get_option( 'timezone_string' );
125 if ( $timezone_string ) {
126 $timezone_object = timezone_open( $timezone_string );
127 $date_object = date_create( null, $timezone_object );
128 foreach( $timezone_formats as $timezone_format ) {
129 if ( false !== strpos( $dateformatstring, $timezone_format ) ) {
130 $formatted = date_format( $date_object, $timezone_format );
131 $dateformatstring = ' '.$dateformatstring;
132 $dateformatstring = preg_replace( "/([^\\\])$timezone_format/", "\\1" . backslashit( $formatted ), $dateformatstring );
133 $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
138 $j = @$datefunc( $dateformatstring, $i );
139 // allow plugins to redo this entirely for languages with untypical grammars
140 $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt);
145 * Convert integer number to format based on the locale.
149 * @param int $number The number to convert based on locale.
150 * @param int $decimals Precision of the number of decimal places.
151 * @return string Converted number in string format.
153 function number_format_i18n( $number, $decimals = 0 ) {
155 $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
156 return apply_filters( 'number_format_i18n', $formatted );
160 * Convert number of bytes largest unit bytes will fit into.
162 * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts
163 * number of bytes to human readable number by taking the number of that unit
164 * that the bytes will go into it. Supports TB value.
166 * Please note that integers in PHP are limited to 32 bits, unless they are on
167 * 64 bit architecture, then they have 64 bit size. If you need to place the
168 * larger size then what PHP integer type will hold, then use a string. It will
169 * be converted to a double, which should always have 64 bit length.
171 * Technically the correct unit names for powers of 1024 are KiB, MiB etc.
172 * @link http://en.wikipedia.org/wiki/Byte
176 * @param int|string $bytes Number of bytes. Note max integer size for integers.
177 * @param int $decimals Precision of number of decimal places. Deprecated.
178 * @return bool|string False on failure. Number string on success.
180 function size_format( $bytes, $decimals = 0 ) {
182 // ========================= Origin ====
183 'TB' => 1099511627776, // pow( 1024, 4)
184 'GB' => 1073741824, // pow( 1024, 3)
185 'MB' => 1048576, // pow( 1024, 2)
186 'kB' => 1024, // pow( 1024, 1)
187 'B ' => 1, // pow( 1024, 0)
189 foreach ( $quant as $unit => $mag )
190 if ( doubleval($bytes) >= $mag )
191 return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;
197 * Get the week start and end from the datetime or date string from mysql.
201 * @param string $mysqlstring Date or datetime field type from mysql.
202 * @param int $start_of_week Optional. Start of the week as an integer.
203 * @return array Keys are 'start' and 'end'.
205 function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
206 $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year
207 $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month
208 $md = substr( $mysqlstring, 5, 2 ); // Mysql string day
209 $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day.
210 $weekday = date( 'w', $day ); // The day of the week from the timestamp
211 if ( !is_numeric($start_of_week) )
212 $start_of_week = get_option( 'start_of_week' );
214 if ( $weekday < $start_of_week )
217 $start = $day - 86400 * ( $weekday - $start_of_week ); // The most recent week start day on or before $day
218 $end = $start + 604799; // $start + 7 days - 1 second
219 return compact( 'start', 'end' );
223 * Unserialize value only if it was serialized.
227 * @param string $original Maybe unserialized original, if is needed.
228 * @return mixed Unserialized data can be any type.
230 function maybe_unserialize( $original ) {
231 if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
232 return @unserialize( $original );
237 * Check value to find if it was serialized.
239 * If $data is not an string, then returned value will always be false.
240 * Serialized data is always a string.
244 * @param mixed $data Value to check to see if was serialized.
245 * @return bool False if not serialized and true if it was.
247 function is_serialized( $data ) {
248 // if it isn't a string, it isn't serialized
249 if ( ! is_string( $data ) )
251 $data = trim( $data );
254 $length = strlen( $data );
257 if ( ':' !== $data[1] )
259 $lastc = $data[$length-1];
260 if ( ';' !== $lastc && '}' !== $lastc )
265 if ( '"' !== $data[$length-2] )
269 return (bool) preg_match( "/^{$token}:[0-9]+:/s", $data );
273 return (bool) preg_match( "/^{$token}:[0-9.E-]+;\$/", $data );
279 * Check whether serialized data is of string type.
283 * @param mixed $data Serialized data
284 * @return bool False if not a serialized string, true if it is.
286 function is_serialized_string( $data ) {
287 // if it isn't a string, it isn't a serialized string
288 if ( !is_string( $data ) )
290 $data = trim( $data );
291 $length = strlen( $data );
294 elseif ( ':' !== $data[1] )
296 elseif ( ';' !== $data[$length-1] )
298 elseif ( $data[0] !== 's' )
300 elseif ( '"' !== $data[$length-2] )
307 * Retrieve option value based on name of option.
309 * If the option does not exist or does not have a value, then the return value
310 * will be false. This is useful to check whether you need to install an option
311 * and is commonly used during installation of plugin options and to test
312 * whether upgrading is required.
314 * If the option was serialized then it will be unserialized when it is returned.
319 * @uses apply_filters() Calls 'pre_option_$option' before checking the option.
320 * Any value other than false will "short-circuit" the retrieval of the option
321 * and return the returned value. You should not try to override special options,
322 * but you will not be prevented from doing so.
323 * @uses apply_filters() Calls 'option_$option', after checking the option, with
326 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped.
327 * @param mixed $default Optional. Default value to return if the option does not exist.
328 * @return mixed Value set for the option.
330 function get_option( $option, $default = false ) {
333 // Allow plugins to short-circuit options.
334 $pre = apply_filters( 'pre_option_' . $option, false );
335 if ( false !== $pre )
338 $option = trim($option);
339 if ( empty($option) )
342 if ( defined( 'WP_SETUP_CONFIG' ) )
345 if ( ! defined( 'WP_INSTALLING' ) ) {
346 // prevent non-existent options from triggering multiple queries
347 $notoptions = wp_cache_get( 'notoptions', 'options' );
348 if ( isset( $notoptions[$option] ) )
351 $alloptions = wp_load_alloptions();
353 if ( isset( $alloptions[$option] ) ) {
354 $value = $alloptions[$option];
356 $value = wp_cache_get( $option, 'options' );
358 if ( false === $value ) {
359 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );
361 // Has to be get_row instead of get_var because of funkiness with 0, false, null values
362 if ( is_object( $row ) ) {
363 $value = $row->option_value;
364 wp_cache_add( $option, $value, 'options' );
365 } else { // option does not exist, so we must cache its non-existence
366 $notoptions[$option] = true;
367 wp_cache_set( 'notoptions', $notoptions, 'options' );
373 $suppress = $wpdb->suppress_errors();
374 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );
375 $wpdb->suppress_errors( $suppress );
376 if ( is_object( $row ) )
377 $value = $row->option_value;
382 // If home is not set use siteurl.
383 if ( 'home' == $option && '' == $value )
384 return get_option( 'siteurl' );
386 if ( in_array( $option, array('siteurl', 'home', 'category_base', 'tag_base') ) )
387 $value = untrailingslashit( $value );
389 return apply_filters( 'option_' . $option, maybe_unserialize( $value ) );
393 * Protect WordPress special option from being modified.
395 * Will die if $option is in protected list. Protected options are 'alloptions'
396 * and 'notoptions' options.
402 * @param string $option Option name.
404 function wp_protect_special_option( $option ) {
405 $protected = array( 'alloptions', 'notoptions' );
406 if ( in_array( $option, $protected ) )
407 wp_die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) );
411 * Print option value after sanitizing for forms.
413 * @uses attr Sanitizes value.
418 * @param string $option Option name.
420 function form_option( $option ) {
421 echo esc_attr( get_option( $option ) );
425 * Loads and caches all autoloaded options, if available or all options.
431 * @return array List of all options.
433 function wp_load_alloptions() {
436 if ( !defined( 'WP_INSTALLING' ) || !is_multisite() )
437 $alloptions = wp_cache_get( 'alloptions', 'options' );
441 if ( !$alloptions ) {
442 $suppress = $wpdb->suppress_errors();
443 if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
444 $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
445 $wpdb->suppress_errors($suppress);
446 $alloptions = array();
447 foreach ( (array) $alloptions_db as $o ) {
448 $alloptions[$o->option_name] = $o->option_value;
450 if ( !defined( 'WP_INSTALLING' ) || !is_multisite() )
451 wp_cache_add( 'alloptions', $alloptions, 'options' );
458 * Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used.
464 * @param int $site_id Optional site ID for which to query the options. Defaults to the current site.
466 function wp_load_core_site_options( $site_id = null ) {
467 global $wpdb, $_wp_using_ext_object_cache;
469 if ( !is_multisite() || $_wp_using_ext_object_cache || defined( 'WP_INSTALLING' ) )
472 if ( empty($site_id) )
473 $site_id = $wpdb->siteid;
475 $core_options = array('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled' );
477 $core_options_in = "'" . implode("', '", $core_options) . "'";
478 $options = $wpdb->get_results( $wpdb->prepare("SELECT meta_key, meta_value FROM $wpdb->sitemeta WHERE meta_key IN ($core_options_in) AND site_id = %d", $site_id) );
480 foreach ( $options as $option ) {
481 $key = $option->meta_key;
482 $cache_key = "{$site_id}:$key";
483 $option->meta_value = maybe_unserialize( $option->meta_value );
485 wp_cache_set( $cache_key, $option->meta_value, 'site-options' );
490 * Update the value of an option that was already added.
492 * You do not need to serialize values. If the value needs to be serialized, then
493 * it will be serialized before it is inserted into the database. Remember,
494 * resources can not be serialized or added as an option.
496 * If the option does not exist, then the option will be added with the option
497 * value, but you will not be able to set whether it is autoloaded. If you want
498 * to set whether an option is autoloaded, then you need to use the add_option().
504 * @uses apply_filters() Calls 'pre_update_option_$option' hook to allow overwriting the
505 * option value to be stored.
506 * @uses do_action() Calls 'update_option' hook before updating the option.
507 * @uses do_action() Calls 'update_option_$option' and 'updated_option' hooks on success.
509 * @param string $option Option name. Expected to not be SQL-escaped.
510 * @param mixed $newvalue Option value. Expected to not be SQL-escaped.
511 * @return bool False if value was not updated and true if value was updated.
513 function update_option( $option, $newvalue ) {
516 $option = trim($option);
517 if ( empty($option) )
520 wp_protect_special_option( $option );
522 if ( is_object($newvalue) )
523 $newvalue = clone $newvalue;
525 $newvalue = sanitize_option( $option, $newvalue );
526 $oldvalue = get_option( $option );
527 $newvalue = apply_filters( 'pre_update_option_' . $option, $newvalue, $oldvalue );
529 // If the new and old values are the same, no need to update.
530 if ( $newvalue === $oldvalue )
533 if ( false === $oldvalue )
534 return add_option( $option, $newvalue );
536 $notoptions = wp_cache_get( 'notoptions', 'options' );
537 if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
538 unset( $notoptions[$option] );
539 wp_cache_set( 'notoptions', $notoptions, 'options' );
542 $_newvalue = $newvalue;
543 $newvalue = maybe_serialize( $newvalue );
545 do_action( 'update_option', $option, $oldvalue, $_newvalue );
546 if ( ! defined( 'WP_INSTALLING' ) ) {
547 $alloptions = wp_load_alloptions();
548 if ( isset( $alloptions[$option] ) ) {
549 $alloptions[$option] = $_newvalue;
550 wp_cache_set( 'alloptions', $alloptions, 'options' );
552 wp_cache_set( $option, $_newvalue, 'options' );
556 $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) );
559 do_action( "update_option_{$option}", $oldvalue, $_newvalue );
560 do_action( 'updated_option', $option, $oldvalue, $_newvalue );
569 * You do not need to serialize values. If the value needs to be serialized, then
570 * it will be serialized before it is inserted into the database. Remember,
571 * resources can not be serialized or added as an option.
573 * You can create options without values and then update the values later.
574 * Existing options will not be updated and checks are performed to ensure that you
575 * aren't adding a protected WordPress option. Care should be taken to not name
576 * options the same as the ones which are protected.
582 * @uses do_action() Calls 'add_option' hook before adding the option.
583 * @uses do_action() Calls 'add_option_$option' and 'added_option' hooks on success.
585 * @param string $option Name of option to add. Expected to not be SQL-escaped.
586 * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped.
587 * @param mixed $deprecated Optional. Description. Not used anymore.
588 * @param bool $autoload Optional. Default is enabled. Whether to load the option when WordPress starts up.
589 * @return bool False if option was not added and true if option was added.
591 function add_option( $option, $value = '', $deprecated = '', $autoload = 'yes' ) {
594 if ( !empty( $deprecated ) )
595 _deprecated_argument( __FUNCTION__, '2.3' );
597 $option = trim($option);
598 if ( empty($option) )
601 wp_protect_special_option( $option );
603 if ( is_object($value) )
604 $value = clone $value;
606 $value = sanitize_option( $option, $value );
608 // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
609 $notoptions = wp_cache_get( 'notoptions', 'options' );
610 if ( !is_array( $notoptions ) || !isset( $notoptions[$option] ) )
611 if ( false !== get_option( $option ) )
615 $value = maybe_serialize( $value );
616 $autoload = ( 'no' === $autoload ) ? 'no' : 'yes';
617 do_action( 'add_option', $option, $_value );
618 if ( ! defined( 'WP_INSTALLING' ) ) {
619 if ( 'yes' == $autoload ) {
620 $alloptions = wp_load_alloptions();
621 $alloptions[$option] = $value;
622 wp_cache_set( 'alloptions', $alloptions, 'options' );
624 wp_cache_set( $option, $value, 'options' );
628 // This option exists now
629 $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh
630 if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
631 unset( $notoptions[$option] );
632 wp_cache_set( 'notoptions', $notoptions, 'options' );
635 $result = $wpdb->query( $wpdb->prepare( "INSERT INTO `$wpdb->options` (`option_name`, `option_value`, `autoload`) VALUES (%s, %s, %s) ON DUPLICATE KEY UPDATE `option_name` = VALUES(`option_name`), `option_value` = VALUES(`option_value`), `autoload` = VALUES(`autoload`)", $option, $value, $autoload ) );
638 do_action( "add_option_{$option}", $option, $_value );
639 do_action( 'added_option', $option, $_value );
646 * Removes option by name. Prevents removal of protected WordPress options.
652 * @uses do_action() Calls 'delete_option' hook before option is deleted.
653 * @uses do_action() Calls 'deleted_option' and 'delete_option_$option' hooks on success.
655 * @param string $option Name of option to remove. Expected to not be SQL-escaped.
656 * @return bool True, if option is successfully deleted. False on failure.
658 function delete_option( $option ) {
661 wp_protect_special_option( $option );
663 // Get the ID, if no ID then return
664 $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) );
665 if ( is_null( $row ) )
667 do_action( 'delete_option', $option );
668 $result = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->options WHERE option_name = %s", $option) );
669 if ( ! defined( 'WP_INSTALLING' ) ) {
670 if ( 'yes' == $row->autoload ) {
671 $alloptions = wp_load_alloptions();
672 if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) {
673 unset( $alloptions[$option] );
674 wp_cache_set( 'alloptions', $alloptions, 'options' );
677 wp_cache_delete( $option, 'options' );
681 do_action( "delete_option_$option", $option );
682 do_action( 'deleted_option', $option );
689 * Delete a transient.
693 * @subpackage Transient
695 * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted.
696 * @uses do_action() Calls 'deleted_transient' hook on success.
698 * @param string $transient Transient name. Expected to not be SQL-escaped.
699 * @return bool true if successful, false otherwise
701 function delete_transient( $transient ) {
702 global $_wp_using_ext_object_cache;
704 do_action( 'delete_transient_' . $transient, $transient );
706 if ( $_wp_using_ext_object_cache ) {
707 $result = wp_cache_delete( $transient, 'transient' );
709 $option_timeout = '_transient_timeout_' . $transient;
710 $option = '_transient_' . $transient;
711 $result = delete_option( $option );
713 delete_option( $option_timeout );
717 do_action( 'deleted_transient', $transient );
722 * Get the value of a transient.
724 * If the transient does not exist or does not have a value, then the return value
727 * @uses apply_filters() Calls 'pre_transient_$transient' hook before checking the transient.
728 * Any value other than false will "short-circuit" the retrieval of the transient
729 * and return the returned value.
730 * @uses apply_filters() Calls 'transient_$option' hook, after checking the transient, with
731 * the transient value.
735 * @subpackage Transient
737 * @param string $transient Transient name. Expected to not be SQL-escaped
738 * @return mixed Value of transient
740 function get_transient( $transient ) {
741 global $_wp_using_ext_object_cache;
743 $pre = apply_filters( 'pre_transient_' . $transient, false );
744 if ( false !== $pre )
747 if ( $_wp_using_ext_object_cache ) {
748 $value = wp_cache_get( $transient, 'transient' );
750 $transient_option = '_transient_' . $transient;
751 if ( ! defined( 'WP_INSTALLING' ) ) {
752 // If option is not in alloptions, it is not autoloaded and thus has a timeout
753 $alloptions = wp_load_alloptions();
754 if ( !isset( $alloptions[$transient_option] ) ) {
755 $transient_timeout = '_transient_timeout_' . $transient;
756 if ( get_option( $transient_timeout ) < time() ) {
757 delete_option( $transient_option );
758 delete_option( $transient_timeout );
764 $value = get_option( $transient_option );
767 return apply_filters( 'transient_' . $transient, $value );
771 * Set/update the value of a transient.
773 * You do not need to serialize values. If the value needs to be serialized, then
774 * it will be serialized before it is set.
778 * @subpackage Transient
780 * @uses apply_filters() Calls 'pre_set_transient_$transient' hook to allow overwriting the
781 * transient value to be stored.
782 * @uses do_action() Calls 'set_transient_$transient' and 'setted_transient' hooks on success.
784 * @param string $transient Transient name. Expected to not be SQL-escaped.
785 * @param mixed $value Transient value. Expected to not be SQL-escaped.
786 * @param int $expiration Time until expiration in seconds, default 0
787 * @return bool False if value was not set and true if value was set.
789 function set_transient( $transient, $value, $expiration = 0 ) {
790 global $_wp_using_ext_object_cache;
792 $value = apply_filters( 'pre_set_transient_' . $transient, $value );
794 if ( $_wp_using_ext_object_cache ) {
795 $result = wp_cache_set( $transient, $value, 'transient', $expiration );
797 $transient_timeout = '_transient_timeout_' . $transient;
798 $transient = '_transient_' . $transient;
799 if ( false === get_option( $transient ) ) {
803 add_option( $transient_timeout, time() + $expiration, '', 'no' );
805 $result = add_option( $transient, $value, '', $autoload );
808 update_option( $transient_timeout, time() + $expiration );
809 $result = update_option( $transient, $value );
813 do_action( 'set_transient_' . $transient );
814 do_action( 'setted_transient', $transient );
820 * Saves and restores user interface settings stored in a cookie.
822 * Checks if the current user-settings cookie is updated and stores it. When no
823 * cookie exists (different browser used), adds the last saved cookie restoring
830 function wp_user_settings() {
835 if ( defined('DOING_AJAX') )
838 if ( ! $user = wp_get_current_user() )
841 $settings = get_user_option( 'user-settings', $user->ID );
843 if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) {
844 $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
846 if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) {
847 if ( $cookie == $settings )
850 $last_time = (int) get_user_option( 'user-settings-time', $user->ID );
851 $saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0;
853 if ( $saved > $last_time ) {
854 update_user_option( $user->ID, 'user-settings', $cookie, false );
855 update_user_option( $user->ID, 'user-settings-time', time() - 5, false );
861 setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH );
862 setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH );
863 $_COOKIE['wp-settings-' . $user->ID] = $settings;
867 * Retrieve user interface setting value based on setting name.
873 * @param string $name The name of the setting.
874 * @param string $default Optional default value to return when $name is not set.
875 * @return mixed the last saved user setting or the default value/false if it doesn't exist.
877 function get_user_setting( $name, $default = false ) {
879 $all = get_all_user_settings();
881 return isset($all[$name]) ? $all[$name] : $default;
885 * Add or update user interface setting.
887 * Both $name and $value can contain only ASCII letters, numbers and underscores.
888 * This function has to be used before any output has started as it calls setcookie().
894 * @param string $name The name of the setting.
895 * @param string $value The value for the setting.
896 * @return bool true if set successfully/false if not.
898 function set_user_setting( $name, $value ) {
900 if ( headers_sent() )
903 $all = get_all_user_settings();
904 $name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name );
909 $all[$name] = $value;
911 return wp_set_all_user_settings($all);
915 * Delete user interface settings.
917 * Deleting settings would reset them to the defaults.
918 * This function has to be used before any output has started as it calls setcookie().
924 * @param mixed $names The name or array of names of the setting to be deleted.
925 * @return bool true if deleted successfully/false if not.
927 function delete_user_setting( $names ) {
929 if ( headers_sent() )
932 $all = get_all_user_settings();
933 $names = (array) $names;
935 foreach ( $names as $name ) {
936 if ( isset($all[$name]) ) {
942 if ( isset($deleted) )
943 return wp_set_all_user_settings($all);
949 * Retrieve all user interface settings.
955 * @return array the last saved user settings or empty array.
957 function get_all_user_settings() {
958 global $_updated_user_settings;
960 if ( ! $user = wp_get_current_user() )
963 if ( isset($_updated_user_settings) && is_array($_updated_user_settings) )
964 return $_updated_user_settings;
967 if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) {
968 $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
970 if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char
971 parse_str($cookie, $all);
974 $option = get_user_option('user-settings', $user->ID);
975 if ( $option && is_string($option) )
976 parse_str( $option, $all );
983 * Private. Set all user interface settings.
989 * @param unknown $all
992 function wp_set_all_user_settings($all) {
993 global $_updated_user_settings;
995 if ( ! $user = wp_get_current_user() )
998 $_updated_user_settings = $all;
1000 foreach ( $all as $k => $v ) {
1001 $v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v );
1002 $settings .= $k . '=' . $v . '&';
1005 $settings = rtrim($settings, '&');
1007 update_user_option( $user->ID, 'user-settings', $settings, false );
1008 update_user_option( $user->ID, 'user-settings-time', time(), false );
1014 * Delete the user settings of the current user.
1016 * @package WordPress
1017 * @subpackage Option
1020 function delete_all_user_settings() {
1021 if ( ! $user = wp_get_current_user() )
1024 update_user_option( $user->ID, 'user-settings', '', false );
1025 setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH);
1029 * Serialize data, if needed.
1033 * @param mixed $data Data that might be serialized.
1034 * @return mixed A scalar data
1036 function maybe_serialize( $data ) {
1037 if ( is_array( $data ) || is_object( $data ) )
1038 return serialize( $data );
1040 // Double serialization is required for backward compatibility.
1041 // See http://core.trac.wordpress.org/ticket/12930
1042 if ( is_serialized( $data ) )
1043 return serialize( $data );
1049 * Retrieve post title from XMLRPC XML.
1051 * If the title element is not part of the XML, then the default post title from
1052 * the $post_default_title will be used instead.
1054 * @package WordPress
1055 * @subpackage XMLRPC
1058 * @global string $post_default_title Default XMLRPC post title.
1060 * @param string $content XMLRPC XML Request content
1061 * @return string Post title
1063 function xmlrpc_getposttitle( $content ) {
1064 global $post_default_title;
1065 if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
1066 $post_title = $matchtitle[1];
1068 $post_title = $post_default_title;
1074 * Retrieve the post category or categories from XMLRPC XML.
1076 * If the category element is not found, then the default post category will be
1077 * used. The return type then would be what $post_default_category. If the
1078 * category is found, then it will always be an array.
1080 * @package WordPress
1081 * @subpackage XMLRPC
1084 * @global string $post_default_category Default XMLRPC post category.
1086 * @param string $content XMLRPC XML Request content
1087 * @return string|array List of categories or category name.
1089 function xmlrpc_getpostcategory( $content ) {
1090 global $post_default_category;
1091 if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
1092 $post_category = trim( $matchcat[1], ',' );
1093 $post_category = explode( ',', $post_category );
1095 $post_category = $post_default_category;
1097 return $post_category;
1101 * XMLRPC XML content without title and category elements.
1103 * @package WordPress
1104 * @subpackage XMLRPC
1107 * @param string $content XMLRPC XML Request content
1108 * @return string XMLRPC XML Request content without title and category elements.
1110 function xmlrpc_removepostdata( $content ) {
1111 $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
1112 $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
1113 $content = trim( $content );
1118 * Open the file handle for debugging.
1120 * This function is used for XMLRPC feature, but it is general purpose enough
1121 * to be used in anywhere.
1123 * @see fopen() for mode options.
1124 * @package WordPress
1127 * @uses $debug Used for whether debugging is enabled.
1129 * @param string $filename File path to debug file.
1130 * @param string $mode Same as fopen() mode parameter.
1131 * @return bool|resource File handle. False on failure.
1133 function debug_fopen( $filename, $mode ) {
1135 if ( 1 == $debug ) {
1136 $fp = fopen( $filename, $mode );
1144 * Write contents to the file used for debugging.
1146 * Technically, this can be used to write to any file handle when the global
1147 * $debug is set to 1 or true.
1149 * @package WordPress
1152 * @uses $debug Used for whether debugging is enabled.
1154 * @param resource $fp File handle for debugging file.
1155 * @param string $string Content to write to debug file.
1157 function debug_fwrite( $fp, $string ) {
1160 fwrite( $fp, $string );
1164 * Close the debugging file handle.
1166 * Technically, this can be used to close any file handle when the global $debug
1167 * is set to 1 or true.
1169 * @package WordPress
1172 * @uses $debug Used for whether debugging is enabled.
1174 * @param resource $fp Debug File handle.
1176 function debug_fclose( $fp ) {
1183 * Check content for video and audio links to add as enclosures.
1185 * Will not add enclosures that have already been added and will
1186 * remove enclosures that are no longer in the post. This is called as
1187 * pingbacks and trackbacks.
1189 * @package WordPress
1194 * @param string $content Post Content
1195 * @param int $post_ID Post ID
1197 function do_enclose( $content, $post_ID ) {
1200 //TODO: Tidy this ghetto code up and make the debug code optional
1201 include_once( ABSPATH . WPINC . '/class-IXR.php' );
1203 $log = debug_fopen( ABSPATH . 'enclosures.log', 'a' );
1204 $post_links = array();
1205 debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" );
1207 $pung = get_enclosed( $post_ID );
1210 $gunk = '/#~:.?+=&%@!\-';
1212 $any = $ltrs . $gunk . $punc;
1214 preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp );
1216 debug_fwrite( $log, 'Post contents:' );
1217 debug_fwrite( $log, $content . "\n" );
1219 foreach ( $pung as $link_test ) {
1220 if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
1221 $mid = $wpdb->get_col( $wpdb->prepare("SELECT meta_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, like_escape( $link_test ) . '%') );
1222 do_action( 'delete_postmeta', $mid );
1223 $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $mid ) ) );
1224 do_action( 'deleted_postmeta', $mid );
1228 foreach ( (array) $post_links_temp[0] as $link_test ) {
1229 if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
1230 $test = @parse_url( $link_test );
1231 if ( false === $test )
1233 if ( isset( $test['query'] ) )
1234 $post_links[] = $link_test;
1235 elseif ( isset($test['path']) && ( $test['path'] != '/' ) && ($test['path'] != '' ) )
1236 $post_links[] = $link_test;
1240 foreach ( (array) $post_links as $url ) {
1241 if ( $url != '' && !$wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE post_id = %d AND meta_key = 'enclosure' AND meta_value LIKE (%s)", $post_ID, like_escape( $url ) . '%' ) ) ) {
1243 if ( $headers = wp_get_http_headers( $url) ) {
1244 $len = (int) $headers['content-length'];
1245 $type = $headers['content-type'];
1246 $allowed_types = array( 'video', 'audio' );
1248 // Check to see if we can figure out the mime type from
1250 $url_parts = @parse_url( $url );
1251 if ( false !== $url_parts ) {
1252 $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
1253 if ( !empty( $extension ) ) {
1254 foreach ( get_allowed_mime_types( ) as $exts => $mime ) {
1255 if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
1263 if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
1264 $meta_value = "$url\n$len\n$type\n";
1265 $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) );
1266 do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value );
1274 * Perform a HTTP HEAD or GET request.
1276 * If $file_path is a writable filename, this will do a GET request and write
1277 * the file to that path.
1281 * @param string $url URL to fetch.
1282 * @param string|bool $file_path Optional. File path to write request to.
1283 * @param int $red (private) The number of Redirects followed, Upon 5 being hit, returns false.
1284 * @return bool|string False on failure and string of headers if HEAD request.
1286 function wp_get_http( $url, $file_path = false, $red = 1 ) {
1287 @set_time_limit( 60 );
1293 $options['redirection'] = 5;
1295 if ( false == $file_path )
1296 $options['method'] = 'HEAD';
1298 $options['method'] = 'GET';
1300 $response = wp_remote_request($url, $options);
1302 if ( is_wp_error( $response ) )
1305 $headers = wp_remote_retrieve_headers( $response );
1306 $headers['response'] = wp_remote_retrieve_response_code( $response );
1308 // WP_HTTP no longer follows redirects for HEAD requests.
1309 if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) {
1310 return wp_get_http( $headers['location'], $file_path, ++$red );
1313 if ( false == $file_path )
1316 // GET request - write it to the supplied filename
1317 $out_fp = fopen($file_path, 'w');
1321 fwrite( $out_fp, wp_remote_retrieve_body( $response ) );
1329 * Retrieve HTTP Headers from URL.
1333 * @param string $url
1334 * @param bool $deprecated Not Used.
1335 * @return bool|string False on failure, headers on success.
1337 function wp_get_http_headers( $url, $deprecated = false ) {
1338 if ( !empty( $deprecated ) )
1339 _deprecated_argument( __FUNCTION__, '2.7' );
1341 $response = wp_remote_head( $url );
1343 if ( is_wp_error( $response ) )
1346 return wp_remote_retrieve_headers( $response );
1350 * Whether today is a new day.
1354 * @uses $previousday Previous day
1356 * @return int 1 when new day, 0 if not a new day.
1358 function is_new_day() {
1359 global $currentday, $previousday;
1360 if ( $currentday != $previousday )
1367 * Build URL query based on an associative and, or indexed array.
1369 * This is a convenient function for easily building url queries. It sets the
1370 * separator to '&' and uses _http_build_query() function.
1372 * @see _http_build_query() Used to build the query
1373 * @link http://us2.php.net/manual/en/function.http-build-query.php more on what
1374 * http_build_query() does.
1378 * @param array $data URL-encode key/value pairs.
1379 * @return string URL encoded string
1381 function build_query( $data ) {
1382 return _http_build_query( $data, null, '&', '', false );
1385 // from php.net (modified by Mark Jaquith to behave like the native PHP5 function)
1386 function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) {
1389 foreach ( (array) $data as $k => $v ) {
1392 if ( is_int($k) && $prefix != null )
1395 $k = $key . '%5B' . $k . '%5D';
1398 elseif ( $v === FALSE )
1401 if ( is_array($v) || is_object($v) )
1402 array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));
1403 elseif ( $urlencode )
1404 array_push($ret, $k.'='.urlencode($v));
1406 array_push($ret, $k.'='.$v);
1409 if ( NULL === $sep )
1410 $sep = ini_get('arg_separator.output');
1412 return implode($sep, $ret);
1416 * Retrieve a modified URL query string.
1418 * You can rebuild the URL and append a new query variable to the URL query by
1419 * using this function. You can also retrieve the full URL with query data.
1421 * Adding a single key & value or an associative array. Setting a key value to
1422 * an empty string removes the key. Omitting oldquery_or_uri uses the $_SERVER
1423 * value. Additional values provided are expected to be encoded appropriately
1424 * with urlencode() or rawurlencode().
1428 * @param mixed $param1 Either newkey or an associative_array
1429 * @param mixed $param2 Either newvalue or oldquery or uri
1430 * @param mixed $param3 Optional. Old query or uri
1431 * @return string New URL query string.
1433 function add_query_arg() {
1435 if ( is_array( func_get_arg(0) ) ) {
1436 if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
1437 $uri = $_SERVER['REQUEST_URI'];
1439 $uri = @func_get_arg( 1 );
1441 if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
1442 $uri = $_SERVER['REQUEST_URI'];
1444 $uri = @func_get_arg( 2 );
1447 if ( $frag = strstr( $uri, '#' ) )
1448 $uri = substr( $uri, 0, -strlen( $frag ) );
1452 if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
1453 $protocol = $matches[0];
1454 $uri = substr( $uri, strlen( $protocol ) );
1459 if ( strpos( $uri, '?' ) !== false ) {
1460 $parts = explode( '?', $uri, 2 );
1461 if ( 1 == count( $parts ) ) {
1465 $base = $parts[0] . '?';
1468 } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
1476 wp_parse_str( $query, $qs );
1477 $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
1478 if ( is_array( func_get_arg( 0 ) ) ) {
1479 $kayvees = func_get_arg( 0 );
1480 $qs = array_merge( $qs, $kayvees );
1482 $qs[func_get_arg( 0 )] = func_get_arg( 1 );
1485 foreach ( (array) $qs as $k => $v ) {
1490 $ret = build_query( $qs );
1491 $ret = trim( $ret, '?' );
1492 $ret = preg_replace( '#=(&|$)#', '$1', $ret );
1493 $ret = $protocol . $base . $ret . $frag;
1494 $ret = rtrim( $ret, '?' );
1499 * Removes an item or list from the query string.
1503 * @param string|array $key Query key or keys to remove.
1504 * @param bool $query When false uses the $_SERVER value.
1505 * @return string New URL query string.
1507 function remove_query_arg( $key, $query=false ) {
1508 if ( is_array( $key ) ) { // removing multiple keys
1509 foreach ( $key as $k )
1510 $query = add_query_arg( $k, false, $query );
1513 return add_query_arg( $key, false, $query );
1517 * Walks the array while sanitizing the contents.
1521 * @param array $array Array to used to walk while sanitizing contents.
1522 * @return array Sanitized $array.
1524 function add_magic_quotes( $array ) {
1525 foreach ( (array) $array as $k => $v ) {
1526 if ( is_array( $v ) ) {
1527 $array[$k] = add_magic_quotes( $v );
1529 $array[$k] = addslashes( $v );
1536 * HTTP request for URI to retrieve content.
1539 * @uses wp_remote_get()
1541 * @param string $uri URI/URL of web page to retrieve.
1542 * @return bool|string HTTP content. False on failure.
1544 function wp_remote_fopen( $uri ) {
1545 $parsed_url = @parse_url( $uri );
1547 if ( !$parsed_url || !is_array( $parsed_url ) )
1551 $options['timeout'] = 10;
1553 $response = wp_remote_get( $uri, $options );
1555 if ( is_wp_error( $response ) )
1558 return wp_remote_retrieve_body( $response );
1562 * Set up the WordPress query.
1566 * @param string $query_vars Default WP_Query arguments.
1568 function wp( $query_vars = '' ) {
1569 global $wp, $wp_query, $wp_the_query;
1570 $wp->main( $query_vars );
1572 if ( !isset($wp_the_query) )
1573 $wp_the_query = $wp_query;
1577 * Retrieve the description for the HTTP status.
1581 * @param int $code HTTP status code.
1582 * @return string Empty string if not found, or description if found.
1584 function get_status_header_desc( $code ) {
1585 global $wp_header_to_desc;
1587 $code = absint( $code );
1589 if ( !isset( $wp_header_to_desc ) ) {
1590 $wp_header_to_desc = array(
1592 101 => 'Switching Protocols',
1593 102 => 'Processing',
1598 203 => 'Non-Authoritative Information',
1599 204 => 'No Content',
1600 205 => 'Reset Content',
1601 206 => 'Partial Content',
1602 207 => 'Multi-Status',
1605 300 => 'Multiple Choices',
1606 301 => 'Moved Permanently',
1609 304 => 'Not Modified',
1612 307 => 'Temporary Redirect',
1614 400 => 'Bad Request',
1615 401 => 'Unauthorized',
1616 402 => 'Payment Required',
1619 405 => 'Method Not Allowed',
1620 406 => 'Not Acceptable',
1621 407 => 'Proxy Authentication Required',
1622 408 => 'Request Timeout',
1625 411 => 'Length Required',
1626 412 => 'Precondition Failed',
1627 413 => 'Request Entity Too Large',
1628 414 => 'Request-URI Too Long',
1629 415 => 'Unsupported Media Type',
1630 416 => 'Requested Range Not Satisfiable',
1631 417 => 'Expectation Failed',
1632 422 => 'Unprocessable Entity',
1634 424 => 'Failed Dependency',
1635 426 => 'Upgrade Required',
1637 500 => 'Internal Server Error',
1638 501 => 'Not Implemented',
1639 502 => 'Bad Gateway',
1640 503 => 'Service Unavailable',
1641 504 => 'Gateway Timeout',
1642 505 => 'HTTP Version Not Supported',
1643 506 => 'Variant Also Negotiates',
1644 507 => 'Insufficient Storage',
1645 510 => 'Not Extended'
1649 if ( isset( $wp_header_to_desc[$code] ) )
1650 return $wp_header_to_desc[$code];
1656 * Set HTTP status header.
1659 * @uses apply_filters() Calls 'status_header' on status header string, HTTP
1660 * HTTP code, HTTP code description, and protocol string as separate
1663 * @param int $header HTTP status code
1666 function status_header( $header ) {
1667 $text = get_status_header_desc( $header );
1669 if ( empty( $text ) )
1672 $protocol = $_SERVER["SERVER_PROTOCOL"];
1673 if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
1674 $protocol = 'HTTP/1.0';
1675 $status_header = "$protocol $header $text";
1676 if ( function_exists( 'apply_filters' ) )
1677 $status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol );
1679 return @header( $status_header, true, $header );
1683 * Gets the header information to prevent caching.
1685 * The several different headers cover the different ways cache prevention is handled
1686 * by different browsers
1690 * @uses apply_filters()
1691 * @return array The associative array of header names and field values.
1693 function wp_get_nocache_headers() {
1695 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
1696 'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
1697 'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
1698 'Pragma' => 'no-cache',
1701 if ( function_exists('apply_filters') ) {
1702 $headers = (array) apply_filters('nocache_headers', $headers);
1708 * Sets the headers to prevent caching for the different browsers.
1710 * Different browsers support different nocache headers, so several headers must
1711 * be sent so that all of them get the point that no caching should occur.
1714 * @uses wp_get_nocache_headers()
1716 function nocache_headers() {
1717 $headers = wp_get_nocache_headers();
1718 foreach( $headers as $name => $field_value )
1719 @header("{$name}: {$field_value}");
1723 * Set the headers for caching for 10 days with JavaScript content type.
1727 function cache_javascript_headers() {
1728 $expiresOffset = 864000; // 10 days
1729 header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
1730 header( "Vary: Accept-Encoding" ); // Handle proxies
1731 header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
1735 * Retrieve the number of database queries during the WordPress execution.
1739 * @return int Number of database queries
1741 function get_num_queries() {
1743 return $wpdb->num_queries;
1747 * Whether input is yes or no. Must be 'y' to be true.
1751 * @param string $yn Character string containing either 'y' or 'n'
1752 * @return bool True if yes, false on anything else
1754 function bool_from_yn( $yn ) {
1755 return ( strtolower( $yn ) == 'y' );
1759 * Loads the feed template from the use of an action hook.
1761 * If the feed action does not have a hook, then the function will die with a
1762 * message telling the visitor that the feed is not valid.
1764 * It is better to only have one hook for each feed.
1767 * @uses $wp_query Used to tell if the use a comment feed.
1768 * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed.
1770 function do_feed() {
1773 $feed = get_query_var( 'feed' );
1775 // Remove the pad, if present.
1776 $feed = preg_replace( '/^_+/', '', $feed );
1778 if ( $feed == '' || $feed == 'feed' )
1779 $feed = get_default_feed();
1781 $hook = 'do_feed_' . $feed;
1782 if ( !has_action($hook) ) {
1783 $message = sprintf( __( 'ERROR: %s is not a valid feed template.' ), esc_html($feed));
1784 wp_die( $message, '', array( 'response' => 404 ) );
1787 do_action( $hook, $wp_query->is_comment_feed );
1791 * Load the RDF RSS 0.91 Feed template.
1795 function do_feed_rdf() {
1796 load_template( ABSPATH . WPINC . '/feed-rdf.php' );
1800 * Load the RSS 1.0 Feed Template.
1804 function do_feed_rss() {
1805 load_template( ABSPATH . WPINC . '/feed-rss.php' );
1809 * Load either the RSS2 comment feed or the RSS2 posts feed.
1813 * @param bool $for_comments True for the comment feed, false for normal feed.
1815 function do_feed_rss2( $for_comments ) {
1816 if ( $for_comments )
1817 load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
1819 load_template( ABSPATH . WPINC . '/feed-rss2.php' );
1823 * Load either Atom comment feed or Atom posts feed.
1827 * @param bool $for_comments True for the comment feed, false for normal feed.
1829 function do_feed_atom( $for_comments ) {
1831 load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
1833 load_template( ABSPATH . WPINC . '/feed-atom.php' );
1837 * Display the robots.txt file content.
1839 * The echo content should be with usage of the permalinks or for creating the
1843 * @uses do_action() Calls 'do_robotstxt' hook for displaying robots.txt rules.
1845 function do_robots() {
1846 header( 'Content-Type: text/plain; charset=utf-8' );
1848 do_action( 'do_robotstxt' );
1850 $output = "User-agent: *\n";
1851 $public = get_option( 'blog_public' );
1852 if ( '0' == $public ) {
1853 $output .= "Disallow: /\n";
1855 $site_url = parse_url( site_url() );
1856 $path = ( !empty( $site_url['path'] ) ) ? $site_url['path'] : '';
1857 $output .= "Disallow: $path/wp-admin/\n";
1858 $output .= "Disallow: $path/wp-includes/\n";
1861 echo apply_filters('robots_txt', $output, $public);
1865 * Test whether blog is already installed.
1867 * The cache will be checked first. If you have a cache plugin, which saves the
1868 * cache values, then this will work. If you use the default WordPress cache,
1869 * and the database goes away, then you might have problems.
1871 * Checks for the option siteurl for whether WordPress is installed.
1876 * @return bool Whether blog is already installed.
1878 function is_blog_installed() {
1881 // Check cache first. If options table goes away and we have true cached, oh well.
1882 if ( wp_cache_get( 'is_blog_installed' ) )
1885 $suppress = $wpdb->suppress_errors();
1886 if ( ! defined( 'WP_INSTALLING' ) ) {
1887 $alloptions = wp_load_alloptions();
1889 // If siteurl is not set to autoload, check it specifically
1890 if ( !isset( $alloptions['siteurl'] ) )
1891 $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
1893 $installed = $alloptions['siteurl'];
1894 $wpdb->suppress_errors( $suppress );
1896 $installed = !empty( $installed );
1897 wp_cache_set( 'is_blog_installed', $installed );
1902 // If visiting repair.php, return true and let it take over.
1903 if ( defined( 'WP_REPAIRING' ) )
1906 $suppress = $wpdb->suppress_errors();
1908 // Loop over the WP tables. If none exist, then scratch install is allowed.
1909 // If one or more exist, suggest table repair since we got here because the options
1910 // table could not be accessed.
1911 $wp_tables = $wpdb->tables();
1912 foreach ( $wp_tables as $table ) {
1913 // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install.
1914 if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table )
1916 if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table )
1919 if ( ! $wpdb->get_results( "DESCRIBE $table;" ) )
1922 // One or more tables exist. We are insane.
1924 // Die with a DB error.
1925 $wpdb->error = sprintf( /*WP_I18N_NO_TABLES*/'One or more database tables are unavailable. The database may need to be <a href="%s">repaired</a>.'/*/WP_I18N_NO_TABLES*/, 'maint/repair.php?referrer=is_blog_installed' );
1929 $wpdb->suppress_errors( $suppress );
1931 wp_cache_set( 'is_blog_installed', false );
1937 * Retrieve URL with nonce added to URL query.
1939 * @package WordPress
1940 * @subpackage Security
1943 * @param string $actionurl URL to add nonce action
1944 * @param string $action Optional. Nonce action name
1945 * @return string URL with nonce action added.
1947 function wp_nonce_url( $actionurl, $action = -1 ) {
1948 $actionurl = str_replace( '&', '&', $actionurl );
1949 return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) );
1953 * Retrieve or display nonce hidden field for forms.
1955 * The nonce field is used to validate that the contents of the form came from
1956 * the location on the current site and not somewhere else. The nonce does not
1957 * offer absolute protection, but should protect against most cases. It is very
1958 * important to use nonce field in forms.
1960 * The $action and $name are optional, but if you want to have better security,
1961 * it is strongly suggested to set those two parameters. It is easier to just
1962 * call the function without any parameters, because validation of the nonce
1963 * doesn't require any parameters, but since crackers know what the default is
1964 * it won't be difficult for them to find a way around your nonce and cause
1967 * The input name will be whatever $name value you gave. The input value will be
1968 * the nonce creation value.
1970 * @package WordPress
1971 * @subpackage Security
1974 * @param string $action Optional. Action name.
1975 * @param string $name Optional. Nonce name.
1976 * @param bool $referer Optional, default true. Whether to set the referer field for validation.
1977 * @param bool $echo Optional, default true. Whether to display or return hidden form field.
1978 * @return string Nonce field.
1980 function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
1981 $name = esc_attr( $name );
1982 $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
1985 $nonce_field .= wp_referer_field( false );
1990 return $nonce_field;
1994 * Retrieve or display referer hidden field for forms.
1996 * The referer link is the current Request URI from the server super global. The
1997 * input name is '_wp_http_referer', in case you wanted to check manually.
1999 * @package WordPress
2000 * @subpackage Security
2003 * @param bool $echo Whether to echo or return the referer field.
2004 * @return string Referer field.
2006 function wp_referer_field( $echo = true ) {
2007 $ref = esc_attr( $_SERVER['REQUEST_URI'] );
2008 $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />';
2011 echo $referer_field;
2012 return $referer_field;
2016 * Retrieve or display original referer hidden field for forms.
2018 * The input name is '_wp_original_http_referer' and will be either the same
2019 * value of {@link wp_referer_field()}, if that was posted already or it will
2020 * be the current page, if it doesn't exist.
2022 * @package WordPress
2023 * @subpackage Security
2026 * @param bool $echo Whether to echo the original http referer
2027 * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to.
2028 * @return string Original referer field.
2030 function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
2031 $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI'];
2032 $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to;
2033 $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />';
2035 echo $orig_referer_field;
2036 return $orig_referer_field;
2040 * Retrieve referer from '_wp_http_referer' or HTTP referer. If it's the same
2041 * as the current request URL, will return false.
2043 * @package WordPress
2044 * @subpackage Security
2047 * @return string|bool False on failure. Referer URL on success.
2049 function wp_get_referer() {
2051 if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
2052 $ref = $_REQUEST['_wp_http_referer'];
2053 else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )
2054 $ref = $_SERVER['HTTP_REFERER'];
2056 if ( $ref && $ref !== $_SERVER['REQUEST_URI'] )
2062 * Retrieve original referer that was posted, if it exists.
2064 * @package WordPress
2065 * @subpackage Security
2068 * @return string|bool False if no original referer or original referer if set.
2070 function wp_get_original_referer() {
2071 if ( !empty( $_REQUEST['_wp_original_http_referer'] ) )
2072 return $_REQUEST['_wp_original_http_referer'];
2077 * Recursive directory creation based on full path.
2079 * Will attempt to set permissions on folders.
2083 * @param string $target Full path to attempt to create.
2084 * @return bool Whether the path was created. True if path already exists.
2086 function wp_mkdir_p( $target ) {
2087 // from php.net/mkdir user contributed notes
2088 $target = str_replace( '//', '/', $target );
2090 // safe mode fails with a trailing slash under certain PHP versions.
2091 $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency.
2092 if ( empty($target) )
2095 if ( file_exists( $target ) )
2096 return @is_dir( $target );
2098 // Attempting to create the directory may clutter up our display.
2099 if ( @mkdir( $target ) ) {
2100 $stat = @stat( dirname( $target ) );
2101 $dir_perms = $stat['mode'] & 0007777; // Get the permission bits.
2102 @chmod( $target, $dir_perms );
2104 } elseif ( is_dir( dirname( $target ) ) ) {
2108 // If the above failed, attempt to create the parent node, then try again.
2109 if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) )
2110 return wp_mkdir_p( $target );
2116 * Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows').
2120 * @param string $path File path
2121 * @return bool True if path is absolute, false is not absolute.
2123 function path_is_absolute( $path ) {
2124 // this is definitive if true but fails if $path does not exist or contains a symbolic link
2125 if ( realpath($path) == $path )
2128 if ( strlen($path) == 0 || $path[0] == '.' )
2131 // windows allows absolute paths like this
2132 if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
2135 // a path starting with / or \ is absolute; anything else is relative
2136 return ( $path[0] == '/' || $path[0] == '\\' );
2140 * Join two filesystem paths together (e.g. 'give me $path relative to $base').
2142 * If the $path is absolute, then it the full path is returned.
2146 * @param string $base
2147 * @param string $path
2148 * @return string The path with the base or absolute path.
2150 function path_join( $base, $path ) {
2151 if ( path_is_absolute($path) )
2154 return rtrim($base, '/') . '/' . ltrim($path, '/');
2158 * Determines a writable directory for temporary files.
2159 * Function's preference is to WP_CONTENT_DIR followed by the return value of <code>sys_get_temp_dir()</code>, before finally defaulting to /tmp/
2161 * In the event that this function does not find a writable location, It may be overridden by the <code>WP_TEMP_DIR</code> constant in your <code>wp-config.php</code> file.
2165 * @return string Writable temporary directory
2167 function get_temp_dir() {
2169 if ( defined('WP_TEMP_DIR') )
2170 return trailingslashit(WP_TEMP_DIR);
2173 return trailingslashit($temp);
2175 $temp = WP_CONTENT_DIR . '/';
2176 if ( is_dir($temp) && @is_writable($temp) )
2179 if ( function_exists('sys_get_temp_dir') ) {
2180 $temp = sys_get_temp_dir();
2181 if ( @is_writable($temp) )
2182 return trailingslashit($temp);
2185 $temp = ini_get('upload_tmp_dir');
2186 if ( is_dir($temp) && @is_writable($temp) )
2187 return trailingslashit($temp);
2194 * Get an array containing the current upload directory's path and url.
2196 * Checks the 'upload_path' option, which should be from the web root folder,
2197 * and if it isn't empty it will be used. If it is empty, then the path will be
2198 * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
2199 * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
2201 * The upload URL path is set either by the 'upload_url_path' option or by using
2202 * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
2204 * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
2205 * the administration settings panel), then the time will be used. The format
2206 * will be year first and then month.
2208 * If the path couldn't be created, then an error will be returned with the key
2209 * 'error' containing the error message. The error suggests that the parent
2210 * directory is not writable by the server.
2212 * On success, the returned array will have many indices:
2213 * 'path' - base directory and sub directory or full path to upload directory.
2214 * 'url' - base url and sub directory or absolute URL to upload directory.
2215 * 'subdir' - sub directory if uploads use year/month folders option is on.
2216 * 'basedir' - path without subdir.
2217 * 'baseurl' - URL path without subdir.
2218 * 'error' - set to false.
2221 * @uses apply_filters() Calls 'upload_dir' on returned array.
2223 * @param string $time Optional. Time formatted in 'yyyy/mm'.
2224 * @return array See above for description.
2226 function wp_upload_dir( $time = null ) {
2228 $siteurl = get_option( 'siteurl' );
2229 $upload_path = get_option( 'upload_path' );
2230 $upload_path = trim($upload_path);
2231 $main_override = is_multisite() && defined( 'MULTISITE' ) && is_main_site();
2232 if ( empty($upload_path) ) {
2233 $dir = WP_CONTENT_DIR . '/uploads';
2235 $dir = $upload_path;
2236 if ( 'wp-content/uploads' == $upload_path ) {
2237 $dir = WP_CONTENT_DIR . '/uploads';
2238 } elseif ( 0 !== strpos($dir, ABSPATH) ) {
2239 // $dir is absolute, $upload_path is (maybe) relative to ABSPATH
2240 $dir = path_join( ABSPATH, $dir );
2244 if ( !$url = get_option( 'upload_url_path' ) ) {
2245 if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )
2246 $url = WP_CONTENT_URL . '/uploads';
2248 $url = trailingslashit( $siteurl ) . $upload_path;
2251 if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
2252 $dir = ABSPATH . UPLOADS;
2253 $url = trailingslashit( $siteurl ) . UPLOADS;
2256 if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
2257 if ( defined( 'BLOGUPLOADDIR' ) )
2258 $dir = untrailingslashit(BLOGUPLOADDIR);
2259 $url = str_replace( UPLOADS, 'files', $url );
2266 if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
2267 // Generate the yearly and monthly dirs
2269 $time = current_time( 'mysql' );
2270 $y = substr( $time, 0, 4 );
2271 $m = substr( $time, 5, 2 );
2278 $uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) );
2280 // Make sure we have an uploads dir
2281 if ( ! wp_mkdir_p( $uploads['path'] ) ) {
2282 $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] );
2283 return array( 'error' => $message );
2290 * Get a filename that is sanitized and unique for the given directory.
2292 * If the filename is not unique, then a number will be added to the filename
2293 * before the extension, and will continue adding numbers until the filename is
2296 * The callback is passed three parameters, the first one is the directory, the
2297 * second is the filename, and the third is the extension.
2301 * @param string $dir
2302 * @param string $filename
2303 * @param mixed $unique_filename_callback Callback.
2304 * @return string New filename, if given wasn't unique.
2306 function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
2307 // sanitize the file name before we begin processing
2308 $filename = sanitize_file_name($filename);
2310 // separate the filename into a name and extension
2311 $info = pathinfo($filename);
2312 $ext = !empty($info['extension']) ? '.' . $info['extension'] : '';
2313 $name = basename($filename, $ext);
2315 // edge case: if file is named '.ext', treat as an empty name
2316 if ( $name === $ext )
2319 // Increment the file number until we have a unique file to save in $dir. Use callback if supplied.
2320 if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) {
2321 $filename = call_user_func( $unique_filename_callback, $dir, $name, $ext );
2325 // change '.ext' to lower case
2326 if ( $ext && strtolower($ext) != $ext ) {
2327 $ext2 = strtolower($ext);
2328 $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );
2330 // check for both lower and upper case extension or image sub-sizes may be overwritten
2331 while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
2332 $new_number = $number + 1;
2333 $filename = str_replace( "$number$ext", "$new_number$ext", $filename );
2334 $filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );
2335 $number = $new_number;
2340 while ( file_exists( $dir . "/$filename" ) ) {
2341 if ( '' == "$number$ext" )
2342 $filename = $filename . ++$number . $ext;
2344 $filename = str_replace( "$number$ext", ++$number . $ext, $filename );
2352 * Create a file in the upload folder with given content.
2354 * If there is an error, then the key 'error' will exist with the error message.
2355 * If success, then the key 'file' will have the unique file path, the 'url' key
2356 * will have the link to the new file. and the 'error' key will be set to false.
2358 * This function will not move an uploaded file to the upload folder. It will
2359 * create a new file with the content in $bits parameter. If you move the upload
2360 * file, read the content of the uploaded file, and then you can give the
2361 * filename and content to this function, which will add it to the upload
2364 * The permissions will be set on the new file automatically by this function.
2368 * @param string $name
2369 * @param null $deprecated Never used. Set to null.
2370 * @param mixed $bits File content
2371 * @param string $time Optional. Time formatted in 'yyyy/mm'.
2374 function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
2375 if ( !empty( $deprecated ) )
2376 _deprecated_argument( __FUNCTION__, '2.0' );
2378 if ( empty( $name ) )
2379 return array( 'error' => __( 'Empty filename' ) );
2381 $wp_filetype = wp_check_filetype( $name );
2382 if ( !$wp_filetype['ext'] )
2383 return array( 'error' => __( 'Invalid file type' ) );
2385 $upload = wp_upload_dir( $time );
2387 if ( $upload['error'] !== false )
2390 $upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) );
2391 if ( !is_array( $upload_bits_error ) ) {
2392 $upload[ 'error' ] = $upload_bits_error;
2396 $filename = wp_unique_filename( $upload['path'], $name );
2398 $new_file = $upload['path'] . "/$filename";
2399 if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
2400 $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
2401 return array( 'error' => $message );
2404 $ifp = @ fopen( $new_file, 'wb' );
2406 return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
2408 @fwrite( $ifp, $bits );
2412 // Set correct file permissions
2413 $stat = @ stat( dirname( $new_file ) );
2414 $perms = $stat['mode'] & 0007777;
2415 $perms = $perms & 0000666;
2416 @ chmod( $new_file, $perms );
2420 $url = $upload['url'] . "/$filename";
2422 return array( 'file' => $new_file, 'url' => $url, 'error' => false );
2426 * Retrieve the file type based on the extension name.
2428 * @package WordPress
2430 * @uses apply_filters() Calls 'ext2type' hook on default supported types.
2432 * @param string $ext The extension to search.
2433 * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
2435 function wp_ext2type( $ext ) {
2436 $ext2type = apply_filters( 'ext2type', array(
2437 'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),
2438 'video' => array( 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),
2439 'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'rtf', 'wp', 'wpd' ),
2440 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsb', 'xlsm' ),
2441 'interactive' => array( 'key', 'ppt', 'pptx', 'pptm', 'odp', 'swf' ),
2442 'text' => array( 'asc', 'csv', 'tsv', 'txt' ),
2443 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip', '7z' ),
2444 'code' => array( 'css', 'htm', 'html', 'php', 'js' ),
2446 foreach ( $ext2type as $type => $exts )
2447 if ( in_array( $ext, $exts ) )
2452 * Retrieve the file type from the file name.
2454 * You can optionally define the mime array, if needed.
2458 * @param string $filename File name or path.
2459 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2460 * @return array Values with extension first and mime type.
2462 function wp_check_filetype( $filename, $mimes = null ) {
2463 if ( empty($mimes) )
2464 $mimes = get_allowed_mime_types();
2468 foreach ( $mimes as $ext_preg => $mime_match ) {
2469 $ext_preg = '!\.(' . $ext_preg . ')$!i';
2470 if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
2471 $type = $mime_match;
2472 $ext = $ext_matches[1];
2477 return compact( 'ext', 'type' );
2481 * Attempt to determine the real file type of a file.
2482 * If unable to, the file name extension will be used to determine type.
2484 * If it's determined that the extension does not match the file's real type,
2485 * then the "proper_filename" value will be set with a proper filename and extension.
2487 * Currently this function only supports validating images known to getimagesize().
2491 * @param string $file Full path to the image.
2492 * @param string $filename The filename of the image (may differ from $file due to $file being in a tmp directory)
2493 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2494 * @return array Values for the extension, MIME, and either a corrected filename or false if original $filename is valid
2496 function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
2498 $proper_filename = false;
2500 // Do basic extension validation and MIME mapping
2501 $wp_filetype = wp_check_filetype( $filename, $mimes );
2502 extract( $wp_filetype );
2504 // We can't do any further validation without a file to work with
2505 if ( ! file_exists( $file ) )
2506 return compact( 'ext', 'type', 'proper_filename' );
2508 // We're able to validate images using GD
2509 if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) {
2511 // Attempt to figure out what type of image it actually is
2512 $imgstats = @getimagesize( $file );
2514 // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME
2515 if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) {
2516 // This is a simplified array of MIMEs that getimagesize() can detect and their extensions
2517 // You shouldn't need to use this filter, but it's here just in case
2518 $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array(
2519 'image/jpeg' => 'jpg',
2520 'image/png' => 'png',
2521 'image/gif' => 'gif',
2522 'image/bmp' => 'bmp',
2523 'image/tiff' => 'tif',
2526 // Replace whatever is after the last period in the filename with the correct extension
2527 if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) {
2528 $filename_parts = explode( '.', $filename );
2529 array_pop( $filename_parts );
2530 $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ];
2531 $new_filename = implode( '.', $filename_parts );
2533 if ( $new_filename != $filename )
2534 $proper_filename = $new_filename; // Mark that it changed
2536 // Redefine the extension / MIME
2537 $wp_filetype = wp_check_filetype( $new_filename, $mimes );
2538 extract( $wp_filetype );
2543 // Let plugins try and validate other types of files
2544 // Should return an array in the style of array( 'ext' => $ext, 'type' => $type, 'proper_filename' => $proper_filename )
2545 return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes );
2549 * Retrieve list of allowed mime types and file extensions.
2553 * @return array Array of mime types keyed by the file extension regex corresponding to those types.
2555 function get_allowed_mime_types() {
2556 static $mimes = false;
2559 // Accepted MIME types are set here as PCRE unless provided.
2560 $mimes = apply_filters( 'upload_mimes', array(
2561 'jpg|jpeg|jpe' => 'image/jpeg',
2562 'gif' => 'image/gif',
2563 'png' => 'image/png',
2564 'bmp' => 'image/bmp',
2565 'tif|tiff' => 'image/tiff',
2566 'ico' => 'image/x-icon',
2567 'asf|asx|wax|wmv|wmx' => 'video/asf',
2568 'avi' => 'video/avi',
2569 'divx' => 'video/divx',
2570 'flv' => 'video/x-flv',
2571 'mov|qt' => 'video/quicktime',
2572 'mpeg|mpg|mpe' => 'video/mpeg',
2573 'txt|asc|c|cc|h' => 'text/plain',
2574 'csv' => 'text/csv',
2575 'tsv' => 'text/tab-separated-values',
2576 'ics' => 'text/calendar',
2577 'rtx' => 'text/richtext',
2578 'css' => 'text/css',
2579 'htm|html' => 'text/html',
2580 'mp3|m4a|m4b' => 'audio/mpeg',
2581 'mp4|m4v' => 'video/mp4',
2582 'ra|ram' => 'audio/x-realaudio',
2583 'wav' => 'audio/wav',
2584 'ogg|oga' => 'audio/ogg',
2585 'ogv' => 'video/ogg',
2586 'mid|midi' => 'audio/midi',
2587 'wma' => 'audio/wma',
2588 'mka' => 'audio/x-matroska',
2589 'mkv' => 'video/x-matroska',
2590 'rtf' => 'application/rtf',
2591 'js' => 'application/javascript',
2592 'pdf' => 'application/pdf',
2593 'doc|docx' => 'application/msword',
2594 'pot|pps|ppt|pptx|ppam|pptm|sldm|ppsm|potm' => 'application/vnd.ms-powerpoint',
2595 'wri' => 'application/vnd.ms-write',
2596 'xla|xls|xlsx|xlt|xlw|xlam|xlsb|xlsm|xltm' => 'application/vnd.ms-excel',
2597 'mdb' => 'application/vnd.ms-access',
2598 'mpp' => 'application/vnd.ms-project',
2599 'docm|dotm' => 'application/vnd.ms-word',
2600 'pptx|sldx|ppsx|potx' => 'application/vnd.openxmlformats-officedocument.presentationml',
2601 'xlsx|xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml',
2602 'docx|dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml',
2603 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',
2604 'swf' => 'application/x-shockwave-flash',
2605 'class' => 'application/java',
2606 'tar' => 'application/x-tar',
2607 'zip' => 'application/zip',
2608 'gz|gzip' => 'application/x-gzip',
2609 'rar' => 'application/rar',
2610 '7z' => 'application/x-7z-compressed',
2611 'exe' => 'application/x-msdownload',
2612 // openoffice formats
2613 'odt' => 'application/vnd.oasis.opendocument.text',
2614 'odp' => 'application/vnd.oasis.opendocument.presentation',
2615 'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
2616 'odg' => 'application/vnd.oasis.opendocument.graphics',
2617 'odc' => 'application/vnd.oasis.opendocument.chart',
2618 'odb' => 'application/vnd.oasis.opendocument.database',
2619 'odf' => 'application/vnd.oasis.opendocument.formula',
2620 // wordperfect formats
2621 'wp|wpd' => 'application/wordperfect',
2629 * Retrieve nonce action "Are you sure" message.
2631 * The action is split by verb and noun. The action format is as follows:
2632 * verb-action_extra. The verb is before the first dash and has the format of
2633 * letters and no spaces and numbers. The noun is after the dash and before the
2634 * underscore, if an underscore exists. The noun is also only letters.
2636 * The filter will be called for any action, which is not defined by WordPress.
2637 * You may use the filter for your plugin to explain nonce actions to the user,
2638 * when they get the "Are you sure?" message. The filter is in the format of
2639 * 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the
2640 * $noun replaced by the found noun. The two parameters that are given to the
2641 * hook are the localized "Are you sure you want to do this?" message with the
2642 * extra text (the text after the underscore).
2644 * @package WordPress
2645 * @subpackage Security
2648 * @param string $action Nonce action.
2649 * @return string Are you sure message.
2651 function wp_explain_nonce( $action ) {
2652 if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) {
2653 $verb = $matches[1];
2654 $noun = $matches[2];
2657 $trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: “%s” has failed.' ), 'get_the_title' );
2659 $trans['add']['category'] = array( __( 'Your attempt to add this category has failed.' ), false );
2660 $trans['delete']['category'] = array( __( 'Your attempt to delete this category: “%s” has failed.' ), 'get_cat_name' );
2661 $trans['update']['category'] = array( __( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' );
2663 $trans['delete']['comment'] = array( __( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' );
2664 $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' );
2665 $trans['approve']['comment'] = array( __( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' );
2666 $trans['update']['comment'] = array( __( 'Your attempt to edit this comment: “%s” has failed.' ), 'use_id' );
2667 $trans['bulk']['comments'] = array( __( 'Your attempt to bulk modify comments has failed.' ), false );
2668 $trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false );
2670 $trans['add']['bookmark'] = array( __( 'Your attempt to add this link has failed.' ), false );
2671 $trans['delete']['bookmark'] = array( __( 'Your attempt to delete this link: “%s” has failed.' ), 'use_id' );
2672 $trans['update']['bookmark'] = array( __( 'Your attempt to edit this link: “%s” has failed.' ), 'use_id' );
2673 $trans['bulk']['bookmarks'] = array( __( 'Your attempt to bulk modify links has failed.' ), false );
2675 $trans['add']['page'] = array( __( 'Your attempt to add this page has failed.' ), false );
2676 $trans['delete']['page'] = array( __( 'Your attempt to delete this page: “%s” has failed.' ), 'get_the_title' );
2677 $trans['update']['page'] = array( __( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' );
2679 $trans['edit']['plugin'] = array( __( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' );
2680 $trans['activate']['plugin'] = array( __( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' );
2681 $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' );
2682 $trans['upgrade']['plugin'] = array( __( 'Your attempt to update this plugin: “%s” has failed.' ), 'use_id' );
2684 $trans['add']['post'] = array( __( 'Your attempt to add this post has failed.' ), false );
2685 $trans['delete']['post'] = array( __( 'Your attempt to delete this post: “%s” has failed.' ), 'get_the_title' );
2686 $trans['update']['post'] = array( __( 'Your attempt to edit this post: “%s” has failed.' ), 'get_the_title' );
2688 $trans['add']['user'] = array( __( 'Your attempt to add this user has failed.' ), false );
2689 $trans['delete']['users'] = array( __( 'Your attempt to delete users has failed.' ), false );
2690 $trans['bulk']['users'] = array( __( 'Your attempt to bulk modify users has failed.' ), false );
2691 $trans['update']['user'] = array( __( 'Your attempt to edit this user: “%s” has failed.' ), 'get_the_author_meta', 'display_name' );
2692 $trans['update']['profile'] = array( __( 'Your attempt to modify the profile for: “%s” has failed.' ), 'get_the_author_meta', 'display_name' );
2694 $trans['update']['options'] = array( __( 'Your attempt to edit your settings has failed.' ), false );
2695 $trans['update']['permalink'] = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
2696 $trans['edit']['file'] = array( __( 'Your attempt to edit this file: “%s” has failed.' ), 'use_id' );
2697 $trans['edit']['theme'] = array( __( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' );
2698 $trans['switch']['theme'] = array( __( 'Your attempt to switch to this theme: “%s” has failed.' ), 'use_id' );
2700 $trans['log']['out'] = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false );
2702 if ( isset( $trans[$verb][$noun] ) ) {
2703 if ( !empty( $trans[$verb][$noun][1] ) ) {
2704 $lookup = $trans[$verb][$noun][1];
2705 if ( isset($trans[$verb][$noun][2]) )
2706 $lookup_value = $trans[$verb][$noun][2];
2707 $object = $matches[4];
2708 if ( 'use_id' != $lookup ) {
2709 if ( isset( $lookup_value ) )
2710 $object = call_user_func( $lookup, $lookup_value, $object );
2712 $object = call_user_func( $lookup, $object );
2714 return sprintf( $trans[$verb][$noun][0], esc_html($object) );
2716 return $trans[$verb][$noun][0];
2720 return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $matches[4] : '' );
2722 return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) );
2727 * Display "Are You Sure" message to confirm the action being taken.
2729 * If the action has the nonce explain message, then it will be displayed along
2730 * with the "Are you sure?" message.
2732 * @package WordPress
2733 * @subpackage Security
2736 * @param string $action The nonce action.
2738 function wp_nonce_ays( $action ) {
2739 $title = __( 'WordPress Failure Notice' );
2740 $html = esc_html( wp_explain_nonce( $action ) );
2741 if ( 'log-out' == $action )
2742 $html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() );
2743 elseif ( wp_get_referer() )
2744 $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
2746 wp_die( $html, $title, array('response' => 403) );
2751 * Kill WordPress execution and display HTML message with error message.
2753 * This function complements the die() PHP function. The difference is that
2754 * HTML will be displayed to the user. It is recommended to use this function
2755 * only, when the execution should not continue any further. It is not
2756 * recommended to call this function very often and try to handle as many errors
2757 * as possible silently.
2761 * @param string $message Error message.
2762 * @param string $title Error title.
2763 * @param string|array $args Optional arguments to control behavior.
2765 function wp_die( $message, $title = '', $args = array() ) {
2766 if ( defined( 'DOING_AJAX' ) && DOING_AJAX )
2769 if ( function_exists( 'apply_filters' ) ) {
2770 $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler');
2772 $function = '_default_wp_die_handler';
2775 call_user_func( $function, $message, $title, $args );
2779 * Kill WordPress execution and display HTML message with error message.
2781 * This is the default handler for wp_die if you want a custom one for your
2782 * site then you can overload using the wp_die_handler filter in wp_die
2787 * @param string $message Error message.
2788 * @param string $title Error title.
2789 * @param string|array $args Optional arguments to control behavior.
2791 function _default_wp_die_handler( $message, $title = '', $args = array() ) {
2792 $defaults = array( 'response' => 500 );
2793 $r = wp_parse_args($args, $defaults);
2795 $have_gettext = function_exists('__');
2797 if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
2798 if ( empty( $title ) ) {
2799 $error_data = $message->get_error_data();
2800 if ( is_array( $error_data ) && isset( $error_data['title'] ) )
2801 $title = $error_data['title'];
2803 $errors = $message->get_error_messages();
2804 switch ( count( $errors ) ) :
2809 $message = "<p>{$errors[0]}</p>";
2812 $message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
2815 } elseif ( is_string( $message ) ) {
2816 $message = "<p>$message</p>";
2819 if ( isset( $r['back_link'] ) && $r['back_link'] ) {
2820 $back_text = $have_gettext? __('« Back') : '« Back';
2821 $message .= "\n<p><a href='javascript:history.back()'>$back_text</a></p>";
2824 if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
2825 if ( !headers_sent() ) {
2826 status_header( $r['response'] );
2828 header( 'Content-Type: text/html; charset=utf-8' );
2831 if ( empty($title) )
2832 $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error';
2834 $text_direction = 'ltr';
2835 if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] )
2836 $text_direction = 'rtl';
2837 elseif ( function_exists( 'is_rtl' ) && is_rtl() )
2838 $text_direction = 'rtl';
2841 <!-- Ticket #11289, IE bug fix: always pad the error page with enough characters such that it is greater than 512 bytes, even after gzip compression abcdefghijklmnopqrstuvwxyz1234567890aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz11223344556677889900abacbcbdcdcededfefegfgfhghgihihjijikjkjlklkmlmlnmnmononpopoqpqprqrqsrsrtstsubcbcdcdedefefgfabcadefbghicjkldmnoepqrfstugvwxhyz1i234j567k890laabmbccnddeoeffpgghqhiirjjksklltmmnunoovppqwqrrxsstytuuzvvw0wxx1yyz2z113223434455666777889890091abc2def3ghi4jkl5mno6pqr7stu8vwx9yz11aab2bcc3dd4ee5ff6gg7hh8ii9j0jk1kl2lmm3nnoo4p5pq6qrr7ss8tt9uuvv0wwx1x2yyzz13aba4cbcb5dcdc6dedfef8egf9gfh0ghg1ihi2hji3jik4jkj5lkl6kml7mln8mnm9ono
2843 <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) && function_exists( 'is_rtl' ) ) language_attributes(); else echo "dir='$text_direction'"; ?>>
2845 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
2846 <title><?php echo $title ?></title>
2847 <style type="text/css">
2849 background: #f9f9f9;
2854 font-family: sans-serif;
2857 -webkit-border-radius: 3px;
2859 border: 1px solid #dfdfdf;
2868 margin: 25px 0 20px;
2871 font-family: Consolas, Monaco, monospace;
2874 margin-bottom: 10px;
2879 text-decoration: none;
2886 font-family: sans-serif;
2887 text-decoration: none;
2888 font-size: 14px !important;
2892 border: 1px solid #bbb;
2894 -webkit-border-radius: 15px;
2895 border-radius: 15px;
2896 -moz-box-sizing: content-box;
2897 -webkit-box-sizing: content-box;
2898 box-sizing: content-box;
2907 background: #f2f2f2 url(<?php echo wp_guess_url(); ?>/wp-admin/images/white-grad.png) repeat-x scroll left top;
2911 background: #eee url(<?php echo wp_guess_url(); ?>/wp-admin/images/white-grad-active.png) repeat-x scroll left top;
2913 <?php if ( 'rtl' == $text_direction ) : ?>
2914 body { font-family: Tahoma, Arial; }
2918 <body id="error-page">
2919 <?php endif; // !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ?>
2920 <?php echo $message; ?>
2928 * Kill WordPress execution and display XML message with error message.
2930 * This is the handler for wp_die when processing XMLRPC requests.
2935 * @param string $message Error message.
2936 * @param string $title Error title.
2937 * @param string|array $args Optional arguments to control behavior.
2939 function _xmlrpc_wp_die_handler( $message, $title = '', $args = array() ) {
2940 global $wp_xmlrpc_server;
2941 $defaults = array( 'response' => 500 );
2943 $r = wp_parse_args($args, $defaults);
2945 if ( $wp_xmlrpc_server ) {
2946 $error = new IXR_Error( $r['response'] , $message);
2947 $wp_xmlrpc_server->output( $error->getXml() );
2953 * Filter to enable special wp_die handler for xmlrpc requests.
2958 function _xmlrpc_wp_die_filter() {
2959 return '_xmlrpc_wp_die_handler';
2964 * Retrieve the WordPress home page URL.
2966 * If the constant named 'WP_HOME' exists, then it will be used and returned by
2967 * the function. This can be used to counter the redirection on your local
2968 * development environment.
2971 * @package WordPress
2974 * @param string $url URL for the home location
2975 * @return string Homepage location.
2977 function _config_wp_home( $url = '' ) {
2978 if ( defined( 'WP_HOME' ) )
2979 return untrailingslashit( WP_HOME );
2984 * Retrieve the WordPress site URL.
2986 * If the constant named 'WP_SITEURL' is defined, then the value in that
2987 * constant will always be returned. This can be used for debugging a site on
2988 * your localhost while not having to change the database to your URL.
2991 * @package WordPress
2994 * @param string $url URL to set the WordPress site location.
2995 * @return string The WordPress Site URL
2997 function _config_wp_siteurl( $url = '' ) {
2998 if ( defined( 'WP_SITEURL' ) )
2999 return untrailingslashit( WP_SITEURL );
3004 * Set the localized direction for MCE plugin.
3006 * Will only set the direction to 'rtl', if the WordPress locale has the text
3007 * direction set to 'rtl'.
3009 * Fills in the 'directionality', 'plugins', and 'theme_advanced_button1' array
3010 * keys. These keys are then returned in the $input array.
3013 * @package WordPress
3017 * @param array $input MCE plugin array.
3018 * @return array Direction set for 'rtl', if needed by locale.
3020 function _mce_set_direction( $input ) {
3022 $input['directionality'] = 'rtl';
3023 $input['plugins'] .= ',directionality';
3024 $input['theme_advanced_buttons1'] .= ',ltr';
3032 * Convert smiley code to the icon graphic file equivalent.
3034 * You can turn off smilies, by going to the write setting screen and unchecking
3035 * the box, or by setting 'use_smilies' option to false or removing the option.
3037 * Plugins may override the default smiley list by setting the $wpsmiliestrans
3038 * to an array, with the key the code the blogger types in and the value the
3041 * The $wp_smiliessearch global is for the regular expression and is set each
3042 * time the function is called.
3044 * The full list of smilies can be found in the function and won't be listed in
3045 * the description. Probably should create a Codex page for it, so that it is
3048 * @global array $wpsmiliestrans
3049 * @global array $wp_smiliessearch
3052 function smilies_init() {
3053 global $wpsmiliestrans, $wp_smiliessearch;
3055 // don't bother setting up smilies if they are disabled
3056 if ( !get_option( 'use_smilies' ) )
3059 if ( !isset( $wpsmiliestrans ) ) {
3060 $wpsmiliestrans = array(
3061 ':mrgreen:' => 'icon_mrgreen.gif',
3062 ':neutral:' => 'icon_neutral.gif',
3063 ':twisted:' => 'icon_twisted.gif',
3064 ':arrow:' => 'icon_arrow.gif',
3065 ':shock:' => 'icon_eek.gif',
3066 ':smile:' => 'icon_smile.gif',
3067 ':???:' => 'icon_confused.gif',
3068 ':cool:' => 'icon_cool.gif',
3069 ':evil:' => 'icon_evil.gif',
3070 ':grin:' => 'icon_biggrin.gif',
3071 ':idea:' => 'icon_idea.gif',
3072 ':oops:' => 'icon_redface.gif',
3073 ':razz:' => 'icon_razz.gif',
3074 ':roll:' => 'icon_rolleyes.gif',
3075 ':wink:' => 'icon_wink.gif',
3076 ':cry:' => 'icon_cry.gif',
3077 ':eek:' => 'icon_surprised.gif',
3078 ':lol:' => 'icon_lol.gif',
3079 ':mad:' => 'icon_mad.gif',
3080 ':sad:' => 'icon_sad.gif',
3081 '8-)' => 'icon_cool.gif',
3082 '8-O' => 'icon_eek.gif',
3083 ':-(' => 'icon_sad.gif',
3084 ':-)' => 'icon_smile.gif',
3085 ':-?' => 'icon_confused.gif',
3086 ':-D' => 'icon_biggrin.gif',
3087 ':-P' => 'icon_razz.gif',
3088 ':-o' => 'icon_surprised.gif',
3089 ':-x' => 'icon_mad.gif',
3090 ':-|' => 'icon_neutral.gif',
3091 ';-)' => 'icon_wink.gif',
3092 '8)' => 'icon_cool.gif',
3093 '8O' => 'icon_eek.gif',
3094 ':(' => 'icon_sad.gif',
3095 ':)' => 'icon_smile.gif',
3096 ':?' => 'icon_confused.gif',
3097 ':D' => 'icon_biggrin.gif',
3098 ':P' => 'icon_razz.gif',
3099 ':o' => 'icon_surprised.gif',
3100 ':x' => 'icon_mad.gif',
3101 ':|' => 'icon_neutral.gif',
3102 ';)' => 'icon_wink.gif',
3103 ':!:' => 'icon_exclaim.gif',
3104 ':?:' => 'icon_question.gif',
3108 if (count($wpsmiliestrans) == 0) {
3113 * NOTE: we sort the smilies in reverse key order. This is to make sure
3114 * we match the longest possible smilie (:???: vs :?) as the regular
3115 * expression used below is first-match
3117 krsort($wpsmiliestrans);
3119 $wp_smiliessearch = '/(?:\s|^)';
3122 foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
3123 $firstchar = substr($smiley, 0, 1);
3124 $rest = substr($smiley, 1);
3127 if ($firstchar != $subchar) {
3128 if ($subchar != '') {
3129 $wp_smiliessearch .= ')|(?:\s|^)';
3131 $subchar = $firstchar;
3132 $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';
3134 $wp_smiliessearch .= '|';
3136 $wp_smiliessearch .= preg_quote($rest, '/');
3139 $wp_smiliessearch .= ')(?:\s|$)/m';
3143 * Merge user defined arguments into defaults array.
3145 * This function is used throughout WordPress to allow for both string or array
3146 * to be merged into another array.
3150 * @param string|array $args Value to merge with $defaults
3151 * @param array $defaults Array that serves as the defaults.
3152 * @return array Merged user defined values with defaults.
3154 function wp_parse_args( $args, $defaults = '' ) {
3155 if ( is_object( $args ) )
3156 $r = get_object_vars( $args );
3157 elseif ( is_array( $args ) )
3160 wp_parse_str( $args, $r );
3162 if ( is_array( $defaults ) )
3163 return array_merge( $defaults, $r );
3168 * Clean up an array, comma- or space-separated list of IDs.
3172 * @param array|string $list
3173 * @return array Sanitized array of IDs
3175 function wp_parse_id_list( $list ) {
3176 if ( !is_array($list) )
3177 $list = preg_split('/[\s,]+/', $list);
3179 return array_unique(array_map('absint', $list));
3183 * Extract a slice of an array, given a list of keys.
3187 * @param array $array The original array
3188 * @param array $keys The list of keys
3189 * @return array The array slice
3191 function wp_array_slice_assoc( $array, $keys ) {
3193 foreach ( $keys as $key )
3194 if ( isset( $array[ $key ] ) )
3195 $slice[ $key ] = $array[ $key ];
3201 * Filters a list of objects, based on a set of key => value arguments.
3205 * @param array $list An array of objects to filter
3206 * @param array $args An array of key => value arguments to match against each object
3207 * @param string $operator The logical operation to perform. 'or' means only one element
3208 * from the array needs to match; 'and' means all elements must match. The default is 'and'.
3209 * @param bool|string $field A field from the object to place instead of the entire object
3210 * @return array A list of objects or object fields
3212 function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) {
3213 if ( ! is_array( $list ) )
3216 $list = wp_list_filter( $list, $args, $operator );
3219 $list = wp_list_pluck( $list, $field );
3225 * Filters a list of objects, based on a set of key => value arguments.
3229 * @param array $list An array of objects to filter
3230 * @param array $args An array of key => value arguments to match against each object
3231 * @param string $operator The logical operation to perform:
3232 * 'AND' means all elements from the array must match;
3233 * 'OR' means only one element needs to match;
3234 * 'NOT' means no elements may match.
3235 * The default is 'AND'.
3238 function wp_list_filter( $list, $args = array(), $operator = 'AND' ) {
3239 if ( ! is_array( $list ) )
3242 if ( empty( $args ) )
3245 $operator = strtoupper( $operator );
3246 $count = count( $args );
3247 $filtered = array();
3249 foreach ( $list as $key => $obj ) {
3250 $to_match = (array) $obj;
3253 foreach ( $args as $m_key => $m_value ) {
3254 if ( $m_value == $to_match[ $m_key ] )
3258 if ( ( 'AND' == $operator && $matched == $count )
3259 || ( 'OR' == $operator && $matched > 0 )
3260 || ( 'NOT' == $operator && 0 == $matched ) ) {
3261 $filtered[$key] = $obj;
3269 * Pluck a certain field out of each object in a list.
3273 * @param array $list A list of objects or arrays
3274 * @param int|string $field A field from the object to place instead of the entire object
3277 function wp_list_pluck( $list, $field ) {
3278 foreach ( $list as $key => $value ) {
3279 if ( is_object( $value ) )
3280 $list[ $key ] = $value->$field;
3282 $list[ $key ] = $value[ $field ];
3289 * Determines if Widgets library should be loaded.
3291 * Checks to make sure that the widgets library hasn't already been loaded. If
3292 * it hasn't, then it will load the widgets library and run an action hook.
3295 * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value.
3297 function wp_maybe_load_widgets() {
3298 if ( ! apply_filters('load_default_widgets', true) )
3300 require_once( ABSPATH . WPINC . '/default-widgets.php' );
3301 add_action( '_admin_menu', 'wp_widgets_add_menu' );
3305 * Append the Widgets menu to the themes main menu.
3308 * @uses $submenu The administration submenu list.
3310 function wp_widgets_add_menu() {
3312 $submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' );
3313 ksort( $submenu['themes.php'], SORT_NUMERIC );
3317 * Flush all output buffers for PHP 5.2.
3319 * Make sure all output buffers are flushed before our singletons our destroyed.
3323 function wp_ob_end_flush_all() {
3324 $levels = ob_get_level();
3325 for ($i=0; $i<$levels; $i++)
3330 * Load custom DB error or display WordPress DB error.
3332 * If a file exists in the wp-content directory named db-error.php, then it will
3333 * be loaded instead of displaying the WordPress DB error. If it is not found,
3334 * then the WordPress DB error will be displayed instead.
3336 * The WordPress DB error sets the HTTP status header to 500 to try to prevent
3337 * search engines from caching the message. Custom DB messages should do the
3340 * This function was backported to the the WordPress 2.3.2, but originally was
3341 * added in WordPress 2.5.0.
3346 function dead_db() {
3349 // Load custom DB error template, if present.
3350 if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {
3351 require_once( WP_CONTENT_DIR . '/db-error.php' );
3355 // If installing or in the admin, provide the verbose message.
3356 if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )
3357 wp_die($wpdb->error);
3359 // Otherwise, be terse.
3360 status_header( 500 );
3362 header( 'Content-Type: text/html; charset=utf-8' );
3365 <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
3367 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
3368 <title><?php echo /*WP_I18N_DB_ERROR*/'Database Error'/*/WP_I18N_DB_ERROR*/; ?></title>
3372 <h1><?php echo /*WP_I18N_DB_CONNECTION_ERROR*/'Error establishing a database connection'/*/WP_I18N_DB_CONNECTION_ERROR*/; ?></h1>
3380 * Converts value to nonnegative integer.
3384 * @param mixed $maybeint Data you wish to have converted to a nonnegative integer
3385 * @return int An nonnegative integer
3387 function absint( $maybeint ) {
3388 return abs( intval( $maybeint ) );
3392 * Determines if the blog can be accessed over SSL.
3394 * Determines if blog can be accessed over SSL by using cURL to access the site
3395 * using the https in the siteurl. Requires cURL extension to work correctly.
3399 * @param string $url
3400 * @return bool Whether SSL access is available
3402 function url_is_accessable_via_ssl($url)
3404 if (in_array('curl', get_loaded_extensions())) {
3405 $ssl = preg_replace( '/^http:\/\//', 'https://', $url );
3408 curl_setopt($ch, CURLOPT_URL, $ssl);
3409 curl_setopt($ch, CURLOPT_FAILONERROR, true);
3410 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
3411 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
3412 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
3416 $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
3419 if ($status == 200 || $status == 401) {
3427 * Marks a function as deprecated and informs when it has been used.
3429 * There is a hook deprecated_function_run that will be called that can be used
3430 * to get the backtrace up to what file and function called the deprecated
3433 * The current behavior is to trigger a user error if WP_DEBUG is true.
3435 * This function is to be used in every function that is deprecated.
3437 * @package WordPress
3442 * @uses do_action() Calls 'deprecated_function_run' and passes the function name, what to use instead,
3443 * and the version the function was deprecated in.
3444 * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do
3445 * trigger or false to not trigger error.
3447 * @param string $function The function that was called
3448 * @param string $version The version of WordPress that deprecated the function
3449 * @param string $replacement Optional. The function that should have been called
3451 function _deprecated_function( $function, $version, $replacement = null ) {
3453 do_action( 'deprecated_function_run', $function, $replacement, $version );
3455 // Allow plugin to filter the output error trigger
3456 if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) {
3457 if ( ! is_null($replacement) )
3458 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
3460 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
3465 * Marks a file as deprecated and informs when it has been used.
3467 * There is a hook deprecated_file_included that will be called that can be used
3468 * to get the backtrace up to what file and function included the deprecated
3471 * The current behavior is to trigger a user error if WP_DEBUG is true.
3473 * This function is to be used in every file that is deprecated.
3475 * @package WordPress
3480 * @uses do_action() Calls 'deprecated_file_included' and passes the file name, what to use instead,
3481 * the version in which the file was deprecated, and any message regarding the change.
3482 * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do
3483 * trigger or false to not trigger error.
3485 * @param string $file The file that was included
3486 * @param string $version The version of WordPress that deprecated the file
3487 * @param string $replacement Optional. The file that should have been included based on ABSPATH
3488 * @param string $message Optional. A message regarding the change
3490 function _deprecated_file( $file, $version, $replacement = null, $message = '' ) {
3492 do_action( 'deprecated_file_included', $file, $replacement, $version, $message );
3494 // Allow plugin to filter the output error trigger
3495 if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) {
3496 $message = empty( $message ) ? '' : ' ' . $message;
3497 if ( ! is_null( $replacement ) )
3498 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message );
3500 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $file, $version ) . $message );
3504 * Marks a function argument as deprecated and informs when it has been used.
3506 * This function is to be used whenever a deprecated function argument is used.
3507 * Before this function is called, the argument must be checked for whether it was
3508 * used by comparing it to its default value or evaluating whether it is empty.
3511 * if ( !empty($deprecated) )
3512 * _deprecated_argument( __FUNCTION__, '3.0' );
3515 * There is a hook deprecated_argument_run that will be called that can be used
3516 * to get the backtrace up to what file and function used the deprecated
3519 * The current behavior is to trigger a user error if WP_DEBUG is true.
3521 * @package WordPress
3526 * @uses do_action() Calls 'deprecated_argument_run' and passes the function name, a message on the change,
3527 * and the version in which the argument was deprecated.
3528 * @uses apply_filters() Calls 'deprecated_argument_trigger_error' and expects boolean value of true to do
3529 * trigger or false to not trigger error.
3531 * @param string $function The function that was called
3532 * @param string $version The version of WordPress that deprecated the argument used
3533 * @param string $message Optional. A message regarding the change.
3535 function _deprecated_argument( $function, $version, $message = null ) {
3537 do_action( 'deprecated_argument_run', $function, $message, $version );
3539 // Allow plugin to filter the output error trigger
3540 if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {
3541 if ( ! is_null( $message ) )
3542 trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s'), $function, $version, $message ) );
3544 trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
3549 * Marks something as being incorrectly called.
3551 * There is a hook doing_it_wrong_run that will be called that can be used
3552 * to get the backtrace up to what file and function called the deprecated
3555 * The current behavior is to trigger a user error if WP_DEBUG is true.
3557 * @package WordPress
3562 * @uses do_action() Calls 'doing_it_wrong_run' and passes the function arguments.
3563 * @uses apply_filters() Calls 'doing_it_wrong_trigger_error' and expects boolean value of true to do
3564 * trigger or false to not trigger error.
3566 * @param string $function The function that was called.
3567 * @param string $message A message explaining what has been done incorrectly.
3568 * @param string $version The version of WordPress where the message was added.
3570 function _doing_it_wrong( $function, $message, $version ) {
3572 do_action( 'doing_it_wrong_run', $function, $message, $version );
3574 // Allow plugin to filter the output error trigger
3575 if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) {
3576 $version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version );
3577 $message .= ' ' . __( 'Please see <a href="http://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information.' );
3578 trigger_error( sprintf( __( '%1$s was called <strong>incorrectly</strong>. %2$s %3$s' ), $function, $message, $version ) );
3583 * Is the server running earlier than 1.5.0 version of lighttpd?
3587 * @return bool Whether the server is running lighttpd < 1.5.0
3589 function is_lighttpd_before_150() {
3590 $server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );
3591 $server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';
3592 return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );
3596 * Does the specified module exist in the Apache config?
3600 * @param string $mod e.g. mod_rewrite
3601 * @param bool $default The default return value if the module is not found
3604 function apache_mod_loaded($mod, $default = false) {
3610 if ( function_exists('apache_get_modules') ) {
3611 $mods = apache_get_modules();
3612 if ( in_array($mod, $mods) )
3614 } elseif ( function_exists('phpinfo') ) {
3617 $phpinfo = ob_get_clean();
3618 if ( false !== strpos($phpinfo, $mod) )
3625 * Check if IIS 7 supports pretty permalinks.
3631 function iis7_supports_permalinks() {
3634 $supports_permalinks = false;
3636 /* First we check if the DOMDocument class exists. If it does not exist,
3637 * which is the case for PHP 4.X, then we cannot easily update the xml configuration file,
3638 * hence we just bail out and tell user that pretty permalinks cannot be used.
3639 * This is not a big issue because PHP 4.X is going to be deprecated and for IIS it
3640 * is recommended to use PHP 5.X NTS.
3641 * Next we check if the URL Rewrite Module 1.1 is loaded and enabled for the web site. When
3642 * URL Rewrite 1.1 is loaded it always sets a server variable called 'IIS_UrlRewriteModule'.
3643 * Lastly we make sure that PHP is running via FastCGI. This is important because if it runs
3644 * via ISAPI then pretty permalinks will not work.
3646 $supports_permalinks = class_exists('DOMDocument') && isset($_SERVER['IIS_UrlRewriteModule']) && ( php_sapi_name() == 'cgi-fcgi' );
3649 return apply_filters('iis7_supports_permalinks', $supports_permalinks);
3653 * File validates against allowed set of defined rules.
3655 * A return value of '1' means that the $file contains either '..' or './'. A
3656 * return value of '2' means that the $file contains ':' after the first
3657 * character. A return value of '3' means that the file is not in the allowed
3662 * @param string $file File path.
3663 * @param array $allowed_files List of allowed files.
3664 * @return int 0 means nothing is wrong, greater than 0 means something was wrong.
3666 function validate_file( $file, $allowed_files = '' ) {
3667 if ( false !== strpos( $file, '..' ) )
3670 if ( false !== strpos( $file, './' ) )
3673 if ( ! empty( $allowed_files ) && ! in_array( $file, $allowed_files ) )
3676 if (':' == substr( $file, 1, 1 ) )
3683 * Determine if SSL is used.
3687 * @return bool True if SSL, false if not used.
3690 if ( isset($_SERVER['HTTPS']) ) {
3691 if ( 'on' == strtolower($_SERVER['HTTPS']) )
3693 if ( '1' == $_SERVER['HTTPS'] )
3695 } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
3702 * Whether SSL login should be forced.
3706 * @param string|bool $force Optional.
3707 * @return bool True if forced, false if not forced.
3709 function force_ssl_login( $force = null ) {
3710 static $forced = false;
3712 if ( !is_null( $force ) ) {
3713 $old_forced = $forced;
3722 * Whether to force SSL used for the Administration Screens.
3726 * @param string|bool $force
3727 * @return bool True if forced, false if not forced.
3729 function force_ssl_admin( $force = null ) {
3730 static $forced = false;
3732 if ( !is_null( $force ) ) {
3733 $old_forced = $forced;
3742 * Guess the URL for the site.
3744 * Will remove wp-admin links to retrieve only return URLs not in the wp-admin
3751 function wp_guess_url() {
3752 if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {
3755 $schema = is_ssl() ? 'https://' : 'http://';
3756 $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
3758 return rtrim($url, '/');
3762 * Temporarily suspend cache additions.
3764 * Stops more data being added to the cache, but still allows cache retrieval.
3765 * This is useful for actions, such as imports, when a lot of data would otherwise
3766 * be almost uselessly added to the cache.
3768 * Suspension lasts for a single page load at most. Remember to call this
3769 * function again if you wish to re-enable cache adds earlier.
3773 * @param bool $suspend Optional. Suspends additions if true, re-enables them if false.
3774 * @return bool The current suspend setting
3776 function wp_suspend_cache_addition( $suspend = null ) {
3777 static $_suspend = false;
3779 if ( is_bool( $suspend ) )
3780 $_suspend = $suspend;