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 formated by $dateformatstring or locale (if available).
25 function mysql2date( $dateformatstring, $mysqlstring, $translate = true ) {
30 if ( 'G' == $dateformatstring ) {
31 return strtotime( $m . ' +0000' );
36 if ( 'U' == $dateformatstring )
40 return date_i18n( $dateformatstring, $i );
42 return date( $dateformatstring, $i );
46 * Retrieve the current time based on specified type.
48 * The 'mysql' type will return the time in the format for MySQL DATETIME field.
49 * The 'timestamp' type will return the current timestamp.
51 * If $gmt is set to either '1' or 'true', then both types will use GMT time.
52 * if $gmt is false, the output is adjusted with the GMT offset in the WordPress option.
56 * @param string $type Either 'mysql' or 'timestamp'.
57 * @param int|bool $gmt Optional. Whether to use GMT timezone. Default is false.
58 * @return int|string String if $type is 'gmt', int if $type is 'timestamp'.
60 function current_time( $type, $gmt = 0 ) {
63 return ( $gmt ) ? gmdate( 'Y-m-d H:i:s' ) : gmdate( 'Y-m-d H:i:s', ( time() + ( get_option( 'gmt_offset' ) * 3600 ) ) );
66 return ( $gmt ) ? time() : time() + ( get_option( 'gmt_offset' ) * 3600 );
72 * Retrieve the date in localized format, based on timestamp.
74 * If the locale specifies the locale month and weekday, then the locale will
75 * take over the format for the date. If it isn't, then the date format string
76 * will be used instead.
80 * @param string $dateformatstring Format to display the date.
81 * @param int $unixtimestamp Optional. Unix timestamp.
82 * @param bool $gmt Optional, default is false. Whether to convert to GMT for time.
83 * @return string The date, translated if locale specifies it.
85 function date_i18n( $dateformatstring, $unixtimestamp = false, $gmt = false ) {
88 // Sanity check for PHP 5.1.0-
89 if ( false === $i || intval($i) < 0 ) {
91 $i = current_time( 'timestamp' );
94 // we should not let date() interfere with our
95 // specially computed timestamp
99 // store original value for language with untypical grammars
100 // see http://core.trac.wordpress.org/ticket/9396
101 $req_format = $dateformatstring;
103 $datefunc = $gmt? 'gmdate' : 'date';
105 if ( ( !empty( $wp_locale->month ) ) && ( !empty( $wp_locale->weekday ) ) ) {
106 $datemonth = $wp_locale->get_month( $datefunc( 'm', $i ) );
107 $datemonth_abbrev = $wp_locale->get_month_abbrev( $datemonth );
108 $dateweekday = $wp_locale->get_weekday( $datefunc( 'w', $i ) );
109 $dateweekday_abbrev = $wp_locale->get_weekday_abbrev( $dateweekday );
110 $datemeridiem = $wp_locale->get_meridiem( $datefunc( 'a', $i ) );
111 $datemeridiem_capital = $wp_locale->get_meridiem( $datefunc( 'A', $i ) );
112 $dateformatstring = ' '.$dateformatstring;
113 $dateformatstring = preg_replace( "/([^\\\])D/", "\\1" . backslashit( $dateweekday_abbrev ), $dateformatstring );
114 $dateformatstring = preg_replace( "/([^\\\])F/", "\\1" . backslashit( $datemonth ), $dateformatstring );
115 $dateformatstring = preg_replace( "/([^\\\])l/", "\\1" . backslashit( $dateweekday ), $dateformatstring );
116 $dateformatstring = preg_replace( "/([^\\\])M/", "\\1" . backslashit( $datemonth_abbrev ), $dateformatstring );
117 $dateformatstring = preg_replace( "/([^\\\])a/", "\\1" . backslashit( $datemeridiem ), $dateformatstring );
118 $dateformatstring = preg_replace( "/([^\\\])A/", "\\1" . backslashit( $datemeridiem_capital ), $dateformatstring );
120 $dateformatstring = substr( $dateformatstring, 1, strlen( $dateformatstring ) -1 );
122 $j = @$datefunc( $dateformatstring, $i );
123 // allow plugins to redo this entirely for languages with untypical grammars
124 $j = apply_filters('date_i18n', $j, $req_format, $i, $gmt);
129 * Convert integer number to format based on the locale.
133 * @param int $number The number to convert based on locale.
134 * @param int $decimals Precision of the number of decimal places.
135 * @return string Converted number in string format.
137 function number_format_i18n( $number, $decimals = 0 ) {
139 $formatted = number_format( $number, absint( $decimals ), $wp_locale->number_format['decimal_point'], $wp_locale->number_format['thousands_sep'] );
140 return apply_filters( 'number_format_i18n', $formatted );
144 * Convert number of bytes largest unit bytes will fit into.
146 * It is easier to read 1kB than 1024 bytes and 1MB than 1048576 bytes. Converts
147 * number of bytes to human readable number by taking the number of that unit
148 * that the bytes will go into it. Supports TB value.
150 * Please note that integers in PHP are limited to 32 bits, unless they are on
151 * 64 bit architecture, then they have 64 bit size. If you need to place the
152 * larger size then what PHP integer type will hold, then use a string. It will
153 * be converted to a double, which should always have 64 bit length.
155 * Technically the correct unit names for powers of 1024 are KiB, MiB etc.
156 * @link http://en.wikipedia.org/wiki/Byte
160 * @param int|string $bytes Number of bytes. Note max integer size for integers.
161 * @param int $decimals Precision of number of decimal places. Deprecated.
162 * @return bool|string False on failure. Number string on success.
164 function size_format( $bytes, $decimals = 0 ) {
166 // ========================= Origin ====
167 'TB' => 1099511627776, // pow( 1024, 4)
168 'GB' => 1073741824, // pow( 1024, 3)
169 'MB' => 1048576, // pow( 1024, 2)
170 'kB' => 1024, // pow( 1024, 1)
171 'B ' => 1, // pow( 1024, 0)
173 foreach ( $quant as $unit => $mag )
174 if ( doubleval($bytes) >= $mag )
175 return number_format_i18n( $bytes / $mag, $decimals ) . ' ' . $unit;
181 * Get the week start and end from the datetime or date string from mysql.
185 * @param string $mysqlstring Date or datetime field type from mysql.
186 * @param int $start_of_week Optional. Start of the week as an integer.
187 * @return array Keys are 'start' and 'end'.
189 function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
190 $my = substr( $mysqlstring, 0, 4 ); // Mysql string Year
191 $mm = substr( $mysqlstring, 8, 2 ); // Mysql string Month
192 $md = substr( $mysqlstring, 5, 2 ); // Mysql string day
193 $day = mktime( 0, 0, 0, $md, $mm, $my ); // The timestamp for mysqlstring day.
194 $weekday = date( 'w', $day ); // The day of the week from the timestamp
195 if ( !is_numeric($start_of_week) )
196 $start_of_week = get_option( 'start_of_week' );
198 if ( $weekday < $start_of_week )
201 $start = $day - 86400 * ( $weekday - $start_of_week ); // The most recent week start day on or before $day
202 $end = $start + 604799; // $start + 7 days - 1 second
203 return compact( 'start', 'end' );
207 * Unserialize value only if it was serialized.
211 * @param string $original Maybe unserialized original, if is needed.
212 * @return mixed Unserialized data can be any type.
214 function maybe_unserialize( $original ) {
215 if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
216 return @unserialize( $original );
221 * Check value to find if it was serialized.
223 * If $data is not an string, then returned value will always be false.
224 * Serialized data is always a string.
228 * @param mixed $data Value to check to see if was serialized.
229 * @return bool False if not serialized and true if it was.
231 function is_serialized( $data ) {
232 // if it isn't a string, it isn't serialized
233 if ( !is_string( $data ) )
235 $data = trim( $data );
238 if ( !preg_match( '/^([adObis]):/', $data, $badions ) )
240 switch ( $badions[1] ) {
244 if ( preg_match( "/^{$badions[1]}:[0-9]+:.*[;}]\$/s", $data ) )
250 if ( preg_match( "/^{$badions[1]}:[0-9.E-]+;\$/", $data ) )
258 * Check whether serialized data is of string type.
262 * @param mixed $data Serialized data
263 * @return bool False if not a serialized string, true if it is.
265 function is_serialized_string( $data ) {
266 // if it isn't a string, it isn't a serialized string
267 if ( !is_string( $data ) )
269 $data = trim( $data );
270 if ( preg_match( '/^s:[0-9]+:.*;$/s', $data ) ) // this should fetch all serialized strings
276 * Retrieve option value based on name of option.
278 * If the option does not exist or does not have a value, then the return value
279 * will be false. This is useful to check whether you need to install an option
280 * and is commonly used during installation of plugin options and to test
281 * whether upgrading is required.
283 * If the option was serialized then it will be unserialized when it is returned.
288 * @uses apply_filters() Calls 'pre_option_$option' before checking the option.
289 * Any value other than false will "short-circuit" the retrieval of the option
290 * and return the returned value. You should not try to override special options,
291 * but you will not be prevented from doing so.
292 * @uses apply_filters() Calls 'option_$option', after checking the option, with
295 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped.
296 * @return mixed Value set for the option.
298 function get_option( $option, $default = false ) {
301 // Allow plugins to short-circuit options.
302 $pre = apply_filters( 'pre_option_' . $option, false );
303 if ( false !== $pre )
306 $option = trim($option);
307 if ( empty($option) )
310 if ( defined( 'WP_SETUP_CONFIG' ) )
313 if ( ! defined( 'WP_INSTALLING' ) ) {
314 // prevent non-existent options from triggering multiple queries
315 $notoptions = wp_cache_get( 'notoptions', 'options' );
316 if ( isset( $notoptions[$option] ) )
319 $alloptions = wp_load_alloptions();
321 if ( isset( $alloptions[$option] ) ) {
322 $value = $alloptions[$option];
324 $value = wp_cache_get( $option, 'options' );
326 if ( false === $value ) {
327 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );
329 // Has to be get_row instead of get_var because of funkiness with 0, false, null values
330 if ( is_object( $row ) ) {
331 $value = $row->option_value;
332 wp_cache_add( $option, $value, 'options' );
333 } else { // option does not exist, so we must cache its non-existence
334 $notoptions[$option] = true;
335 wp_cache_set( 'notoptions', $notoptions, 'options' );
341 $suppress = $wpdb->suppress_errors();
342 $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) );
343 $wpdb->suppress_errors( $suppress );
344 if ( is_object( $row ) )
345 $value = $row->option_value;
350 // If home is not set use siteurl.
351 if ( 'home' == $option && '' == $value )
352 return get_option( 'siteurl' );
354 if ( in_array( $option, array('siteurl', 'home', 'category_base', 'tag_base') ) )
355 $value = untrailingslashit( $value );
357 return apply_filters( 'option_' . $option, maybe_unserialize( $value ) );
361 * Protect WordPress special option from being modified.
363 * Will die if $option is in protected list. Protected options are 'alloptions'
364 * and 'notoptions' options.
370 * @param string $option Option name.
372 function wp_protect_special_option( $option ) {
373 $protected = array( 'alloptions', 'notoptions' );
374 if ( in_array( $option, $protected ) )
375 wp_die( sprintf( __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) );
379 * Print option value after sanitizing for forms.
381 * @uses attr Sanitizes value.
386 * @param string $option Option name.
388 function form_option( $option ) {
389 echo esc_attr( get_option( $option ) );
393 * Loads and caches all autoloaded options, if available or all options.
399 * @return array List of all options.
401 function wp_load_alloptions() {
404 if ( !defined( 'WP_INSTALLING' ) || !is_multisite() )
405 $alloptions = wp_cache_get( 'alloptions', 'options' );
409 if ( !$alloptions ) {
410 $suppress = $wpdb->suppress_errors();
411 if ( !$alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ) )
412 $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" );
413 $wpdb->suppress_errors($suppress);
414 $alloptions = array();
415 foreach ( (array) $alloptions_db as $o )
416 $alloptions[$o->option_name] = $o->option_value;
417 if ( !defined( 'WP_INSTALLING' ) || !is_multisite() )
418 wp_cache_add( 'alloptions', $alloptions, 'options' );
425 * Loads and caches certain often requested site options if is_multisite() and a peristent cache is not being used.
431 * @param int $site_id Optional site ID for which to query the options. Defaults to the current site.
433 function wp_load_core_site_options( $site_id = null ) {
434 global $wpdb, $_wp_using_ext_object_cache;
436 if ( !is_multisite() || $_wp_using_ext_object_cache || defined( 'WP_INSTALLING' ) )
439 if ( empty($site_id) )
440 $site_id = $wpdb->siteid;
442 $core_options = array('site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'dashboard_blog', 'can_compress_scripts', 'global_terms_enabled' );
444 $core_options_in = "'" . implode("', '", $core_options) . "'";
445 $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) );
447 foreach ( $options as $option ) {
448 $key = $option->meta_key;
449 $cache_key = "{$site_id}:$key";
450 $option->meta_value = maybe_unserialize( $option->meta_value );
452 wp_cache_set( $cache_key, $option->meta_value, 'site-options' );
457 * Update the value of an option that was already added.
459 * You do not need to serialize values. If the value needs to be serialized, then
460 * it will be serialized before it is inserted into the database. Remember,
461 * resources can not be serialized or added as an option.
463 * If the option does not exist, then the option will be added with the option
464 * value, but you will not be able to set whether it is autoloaded. If you want
465 * to set whether an option is autoloaded, then you need to use the add_option().
471 * @uses apply_filters() Calls 'pre_update_option_$option' hook to allow overwriting the
472 * option value to be stored.
473 * @uses do_action() Calls 'update_option' hook before updating the option.
474 * @uses do_action() Calls 'update_option_$option' and 'updated_option' hooks on success.
476 * @param string $option Option name. Expected to not be SQL-escaped.
477 * @param mixed $newvalue Option value. Expected to not be SQL-escaped.
478 * @return bool False if value was not updated and true if value was updated.
480 function update_option( $option, $newvalue ) {
483 $option = trim($option);
484 if ( empty($option) )
487 wp_protect_special_option( $option );
489 if ( is_object($newvalue) )
490 $newvalue = wp_clone($newvalue);
492 $newvalue = sanitize_option( $option, $newvalue );
493 $oldvalue = get_option( $option );
494 $newvalue = apply_filters( 'pre_update_option_' . $option, $newvalue, $oldvalue );
496 // If the new and old values are the same, no need to update.
497 if ( $newvalue === $oldvalue )
500 if ( false === $oldvalue )
501 return add_option( $option, $newvalue );
503 $notoptions = wp_cache_get( 'notoptions', 'options' );
504 if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
505 unset( $notoptions[$option] );
506 wp_cache_set( 'notoptions', $notoptions, 'options' );
509 $_newvalue = $newvalue;
510 $newvalue = maybe_serialize( $newvalue );
512 do_action( 'update_option', $option, $oldvalue, $_newvalue );
513 if ( ! defined( 'WP_INSTALLING' ) ) {
514 $alloptions = wp_load_alloptions();
515 if ( isset( $alloptions[$option] ) ) {
516 $alloptions[$option] = $_newvalue;
517 wp_cache_set( 'alloptions', $alloptions, 'options' );
519 wp_cache_set( $option, $_newvalue, 'options' );
523 $result = $wpdb->update( $wpdb->options, array( 'option_value' => $newvalue ), array( 'option_name' => $option ) );
526 do_action( "update_option_{$option}", $oldvalue, $_newvalue );
527 do_action( 'updated_option', $option, $oldvalue, $_newvalue );
536 * You do not need to serialize values. If the value needs to be serialized, then
537 * it will be serialized before it is inserted into the database. Remember,
538 * resources can not be serialized or added as an option.
540 * You can create options without values and then add values later. Does not
541 * check whether the option has already been added, but does check that you
542 * aren't adding a protected WordPress option. Care should be taken to not name
543 * options the same as the ones which are protected and to not add options
544 * that were already added.
549 * @link http://alex.vort-x.net/blog/ Thanks Alex Stapleton
551 * @uses do_action() Calls 'add_option' hook before adding the option.
552 * @uses do_action() Calls 'add_option_$option' and 'added_option' hooks on success.
554 * @param string $option Name of option to add. Expected to not be SQL-escaped.
555 * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped.
556 * @param mixed $deprecated Optional. Description. Not used anymore.
557 * @param bool $autoload Optional. Default is enabled. Whether to load the option when WordPress starts up.
558 * @return null returns when finished.
560 function add_option( $option, $value = '', $deprecated = '', $autoload = 'yes' ) {
563 if ( !empty( $deprecated ) )
564 _deprecated_argument( __FUNCTION__, '2.3' );
566 $option = trim($option);
567 if ( empty($option) )
570 wp_protect_special_option( $option );
572 if ( is_object($value) )
573 $value = wp_clone($value);
575 $value = sanitize_option( $option, $value );
577 // Make sure the option doesn't already exist. We can check the 'notoptions' cache before we ask for a db query
578 $notoptions = wp_cache_get( 'notoptions', 'options' );
579 if ( !is_array( $notoptions ) || !isset( $notoptions[$option] ) )
580 if ( false !== get_option( $option ) )
584 $value = maybe_serialize( $value );
585 $autoload = ( 'no' === $autoload ) ? 'no' : 'yes';
586 do_action( 'add_option', $option, $_value );
587 if ( ! defined( 'WP_INSTALLING' ) ) {
588 if ( 'yes' == $autoload ) {
589 $alloptions = wp_load_alloptions();
590 $alloptions[$option] = $value;
591 wp_cache_set( 'alloptions', $alloptions, 'options' );
593 wp_cache_set( $option, $value, 'options' );
597 // This option exists now
598 $notoptions = wp_cache_get( 'notoptions', 'options' ); // yes, again... we need it to be fresh
599 if ( is_array( $notoptions ) && isset( $notoptions[$option] ) ) {
600 unset( $notoptions[$option] );
601 wp_cache_set( 'notoptions', $notoptions, 'options' );
604 $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, $autoload ) );
607 do_action( "add_option_{$option}", $option, $_value );
608 do_action( 'added_option', $option, $_value );
615 * Removes option by name. Prevents removal of protected WordPress options.
621 * @uses do_action() Calls 'delete_option' hook before option is deleted.
622 * @uses do_action() Calls 'deleted_option' and 'delete_option_$option' hooks on success.
624 * @param string $option Name of option to remove. Expected to not be SQL-escaped.
625 * @return bool True, if option is successfully deleted. False on failure.
627 function delete_option( $option ) {
630 wp_protect_special_option( $option );
632 // Get the ID, if no ID then return
633 $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) );
634 if ( is_null( $row ) )
636 do_action( 'delete_option', $option );
637 $result = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->options WHERE option_name = %s", $option) );
638 if ( ! defined( 'WP_INSTALLING' ) ) {
639 if ( 'yes' == $row->autoload ) {
640 $alloptions = wp_load_alloptions();
641 if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) {
642 unset( $alloptions[$option] );
643 wp_cache_set( 'alloptions', $alloptions, 'options' );
646 wp_cache_delete( $option, 'options' );
650 do_action( "delete_option_$option", $option );
651 do_action( 'deleted_option', $option );
662 * @subpackage Transient
664 * @uses do_action() Calls 'delete_transient_$transient' hook before transient is deleted.
665 * @uses do_action() Calls 'deleted_transient' hook on success.
667 * @param string $transient Transient name. Expected to not be SQL-escaped.
668 * @return bool true if successful, false otherwise
670 function delete_transient( $transient ) {
671 global $_wp_using_ext_object_cache;
673 do_action( 'delete_transient_' . $transient, $transient );
675 if ( $_wp_using_ext_object_cache ) {
676 $result = wp_cache_delete( $transient, 'transient' );
678 $option_timeout = '_transient_timeout_' . $transient;
679 $option = '_transient_' . $transient;
680 $result = delete_option( $option );
682 delete_option( $option_timeout );
686 do_action( 'deleted_transient', $transient );
691 * Get the value of a transient
693 * If the transient does not exist or does not have a value, then the return value
696 * @uses apply_filters() Calls 'pre_transient_$transient' hook before checking the transient.
697 * Any value other than false will "short-circuit" the retrieval of the transient
698 * and return the returned value.
699 * @uses apply_filters() Calls 'transient_$option' hook, after checking the transient, with
700 * the transient value.
704 * @subpackage Transient
706 * @param string $transient Transient name. Expected to not be SQL-escaped
707 * @return mixed Value of transient
709 function get_transient( $transient ) {
710 global $_wp_using_ext_object_cache;
712 $pre = apply_filters( 'pre_transient_' . $transient, false );
713 if ( false !== $pre )
716 if ( $_wp_using_ext_object_cache ) {
717 $value = wp_cache_get( $transient, 'transient' );
719 $transient_option = '_transient_' . $transient;
720 if ( ! defined( 'WP_INSTALLING' ) ) {
721 // If option is not in alloptions, it is not autoloaded and thus has a timeout
722 $alloptions = wp_load_alloptions();
723 if ( !isset( $alloptions[$transient_option] ) ) {
724 $transient_timeout = '_transient_timeout_' . $transient;
725 if ( get_option( $transient_timeout ) < time() ) {
726 delete_option( $transient_option );
727 delete_option( $transient_timeout );
733 $value = get_option( $transient_option );
736 return apply_filters( 'transient_' . $transient, $value );
740 * Set/update the value of a transient
742 * You do not need to serialize values. If the value needs to be serialized, then
743 * it will be serialized before it is set.
747 * @subpackage Transient
749 * @uses apply_filters() Calls 'pre_set_transient_$transient' hook to allow overwriting the
750 * transient value to be stored.
751 * @uses do_action() Calls 'set_transient_$transient' and 'setted_transient' hooks on success.
753 * @param string $transient Transient name. Expected to not be SQL-escaped.
754 * @param mixed $value Transient value. Expected to not be SQL-escaped.
755 * @param int $expiration Time until expiration in seconds, default 0
756 * @return bool False if value was not set and true if value was set.
758 function set_transient( $transient, $value, $expiration = 0 ) {
759 global $_wp_using_ext_object_cache;
761 $value = apply_filters( 'pre_set_transient_' . $transient, $value );
763 if ( $_wp_using_ext_object_cache ) {
764 $result = wp_cache_set( $transient, $value, 'transient', $expiration );
766 $transient_timeout = '_transient_timeout_' . $transient;
767 $transient = '_transient_' . $transient;
768 if ( false === get_option( $transient ) ) {
772 add_option( $transient_timeout, time() + $expiration, '', 'no' );
774 $result = add_option( $transient, $value, '', $autoload );
777 update_option( $transient_timeout, time() + $expiration );
778 $result = update_option( $transient, $value );
782 do_action( 'set_transient_' . $transient );
783 do_action( 'setted_transient', $transient );
789 * Saves and restores user interface settings stored in a cookie.
791 * Checks if the current user-settings cookie is updated and stores it. When no
792 * cookie exists (different browser used), adds the last saved cookie restoring
799 function wp_user_settings() {
804 if ( defined('DOING_AJAX') )
807 if ( ! $user = wp_get_current_user() )
810 $settings = get_user_option( 'user-settings', $user->ID );
812 if ( isset( $_COOKIE['wp-settings-' . $user->ID] ) ) {
813 $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
815 if ( ! empty( $cookie ) && strpos( $cookie, '=' ) ) {
816 if ( $cookie == $settings )
819 $last_time = (int) get_user_option( 'user-settings-time', $user->ID );
820 $saved = isset( $_COOKIE['wp-settings-time-' . $user->ID]) ? preg_replace( '/[^0-9]/', '', $_COOKIE['wp-settings-time-' . $user->ID] ) : 0;
822 if ( $saved > $last_time ) {
823 update_user_option( $user->ID, 'user-settings', $cookie, false );
824 update_user_option( $user->ID, 'user-settings-time', time() - 5, false );
830 setcookie( 'wp-settings-' . $user->ID, $settings, time() + 31536000, SITECOOKIEPATH );
831 setcookie( 'wp-settings-time-' . $user->ID, time(), time() + 31536000, SITECOOKIEPATH );
832 $_COOKIE['wp-settings-' . $user->ID] = $settings;
836 * Retrieve user interface setting value based on setting name.
842 * @param string $name The name of the setting.
843 * @param string $default Optional default value to return when $name is not set.
844 * @return mixed the last saved user setting or the default value/false if it doesn't exist.
846 function get_user_setting( $name, $default = false ) {
848 $all = get_all_user_settings();
850 return isset($all[$name]) ? $all[$name] : $default;
854 * Add or update user interface setting.
856 * Both $name and $value can contain only ASCII letters, numbers and underscores.
857 * This function has to be used before any output has started as it calls setcookie().
863 * @param string $name The name of the setting.
864 * @param string $value The value for the setting.
865 * @return bool true if set successfully/false if not.
867 function set_user_setting( $name, $value ) {
869 if ( headers_sent() )
872 $all = get_all_user_settings();
873 $name = preg_replace( '/[^A-Za-z0-9_]+/', '', $name );
878 $all[$name] = $value;
880 return wp_set_all_user_settings($all);
884 * Delete user interface settings.
886 * Deleting settings would reset them to the defaults.
887 * This function has to be used before any output has started as it calls setcookie().
893 * @param mixed $names The name or array of names of the setting to be deleted.
894 * @return bool true if deleted successfully/false if not.
896 function delete_user_setting( $names ) {
898 if ( headers_sent() )
901 $all = get_all_user_settings();
902 $names = (array) $names;
904 foreach ( $names as $name ) {
905 if ( isset($all[$name]) ) {
911 if ( isset($deleted) )
912 return wp_set_all_user_settings($all);
918 * Retrieve all user interface settings.
924 * @return array the last saved user settings or empty array.
926 function get_all_user_settings() {
927 global $_updated_user_settings;
929 if ( ! $user = wp_get_current_user() )
932 if ( isset($_updated_user_settings) && is_array($_updated_user_settings) )
933 return $_updated_user_settings;
936 if ( isset($_COOKIE['wp-settings-' . $user->ID]) ) {
937 $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE['wp-settings-' . $user->ID] );
939 if ( $cookie && strpos($cookie, '=') ) // the '=' cannot be 1st char
940 parse_str($cookie, $all);
943 $option = get_user_option('user-settings', $user->ID);
944 if ( $option && is_string($option) )
945 parse_str( $option, $all );
952 * Private. Set all user interface settings.
958 * @param unknown $all
961 function wp_set_all_user_settings($all) {
962 global $_updated_user_settings;
964 if ( ! $user = wp_get_current_user() )
967 $_updated_user_settings = $all;
969 foreach ( $all as $k => $v ) {
970 $v = preg_replace( '/[^A-Za-z0-9_]+/', '', $v );
971 $settings .= $k . '=' . $v . '&';
974 $settings = rtrim($settings, '&');
976 update_user_option( $user->ID, 'user-settings', $settings, false );
977 update_user_option( $user->ID, 'user-settings-time', time(), false );
983 * Delete the user settings of the current user.
989 function delete_all_user_settings() {
990 if ( ! $user = wp_get_current_user() )
993 update_user_option( $user->ID, 'user-settings', '', false );
994 setcookie('wp-settings-' . $user->ID, ' ', time() - 31536000, SITECOOKIEPATH);
998 * Serialize data, if needed.
1002 * @param mixed $data Data that might be serialized.
1003 * @return mixed A scalar data
1005 function maybe_serialize( $data ) {
1006 if ( is_array( $data ) || is_object( $data ) )
1007 return serialize( $data );
1009 if ( is_serialized( $data ) )
1010 return serialize( $data );
1016 * Retrieve post title from XMLRPC XML.
1018 * If the title element is not part of the XML, then the default post title from
1019 * the $post_default_title will be used instead.
1021 * @package WordPress
1022 * @subpackage XMLRPC
1025 * @global string $post_default_title Default XMLRPC post title.
1027 * @param string $content XMLRPC XML Request content
1028 * @return string Post title
1030 function xmlrpc_getposttitle( $content ) {
1031 global $post_default_title;
1032 if ( preg_match( '/<title>(.+?)<\/title>/is', $content, $matchtitle ) ) {
1033 $post_title = $matchtitle[1];
1035 $post_title = $post_default_title;
1041 * Retrieve the post category or categories from XMLRPC XML.
1043 * If the category element is not found, then the default post category will be
1044 * used. The return type then would be what $post_default_category. If the
1045 * category is found, then it will always be an array.
1047 * @package WordPress
1048 * @subpackage XMLRPC
1051 * @global string $post_default_category Default XMLRPC post category.
1053 * @param string $content XMLRPC XML Request content
1054 * @return string|array List of categories or category name.
1056 function xmlrpc_getpostcategory( $content ) {
1057 global $post_default_category;
1058 if ( preg_match( '/<category>(.+?)<\/category>/is', $content, $matchcat ) ) {
1059 $post_category = trim( $matchcat[1], ',' );
1060 $post_category = explode( ',', $post_category );
1062 $post_category = $post_default_category;
1064 return $post_category;
1068 * XMLRPC XML content without title and category elements.
1070 * @package WordPress
1071 * @subpackage XMLRPC
1074 * @param string $content XMLRPC XML Request content
1075 * @return string XMLRPC XML Request content without title and category elements.
1077 function xmlrpc_removepostdata( $content ) {
1078 $content = preg_replace( '/<title>(.+?)<\/title>/si', '', $content );
1079 $content = preg_replace( '/<category>(.+?)<\/category>/si', '', $content );
1080 $content = trim( $content );
1085 * Open the file handle for debugging.
1087 * This function is used for XMLRPC feature, but it is general purpose enough
1088 * to be used in anywhere.
1090 * @see fopen() for mode options.
1091 * @package WordPress
1094 * @uses $debug Used for whether debugging is enabled.
1096 * @param string $filename File path to debug file.
1097 * @param string $mode Same as fopen() mode parameter.
1098 * @return bool|resource File handle. False on failure.
1100 function debug_fopen( $filename, $mode ) {
1102 if ( 1 == $debug ) {
1103 $fp = fopen( $filename, $mode );
1111 * Write contents to the file used for debugging.
1113 * Technically, this can be used to write to any file handle when the global
1114 * $debug is set to 1 or true.
1116 * @package WordPress
1119 * @uses $debug Used for whether debugging is enabled.
1121 * @param resource $fp File handle for debugging file.
1122 * @param string $string Content to write to debug file.
1124 function debug_fwrite( $fp, $string ) {
1127 fwrite( $fp, $string );
1131 * Close the debugging file handle.
1133 * Technically, this can be used to close any file handle when the global $debug
1134 * is set to 1 or true.
1136 * @package WordPress
1139 * @uses $debug Used for whether debugging is enabled.
1141 * @param resource $fp Debug File handle.
1143 function debug_fclose( $fp ) {
1150 * Check content for video and audio links to add as enclosures.
1152 * Will not add enclosures that have already been added and will
1153 * remove enclosures that are no longer in the post. This is called as
1154 * pingbacks and trackbacks.
1156 * @package WordPress
1161 * @param string $content Post Content
1162 * @param int $post_ID Post ID
1164 function do_enclose( $content, $post_ID ) {
1166 include_once( ABSPATH . WPINC . '/class-IXR.php' );
1168 $log = debug_fopen( ABSPATH . 'enclosures.log', 'a' );
1169 $post_links = array();
1170 debug_fwrite( $log, 'BEGIN ' . date( 'YmdHis', time() ) . "\n" );
1172 $pung = get_enclosed( $post_ID );
1175 $gunk = '/#~:.?+=&%@!\-';
1177 $any = $ltrs . $gunk . $punc;
1179 preg_match_all( "{\b http : [$any] +? (?= [$punc] * [^$any] | $)}x", $content, $post_links_temp );
1181 debug_fwrite( $log, 'Post contents:' );
1182 debug_fwrite( $log, $content . "\n" );
1184 foreach ( $pung as $link_test ) {
1185 if ( !in_array( $link_test, $post_links_temp[0] ) ) { // link no longer in post
1186 $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, $link_test . '%') );
1187 do_action( 'delete_postmeta', $mid );
1188 $wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_id IN(%s)", implode( ',', $mid ) ) );
1189 do_action( 'deleted_postmeta', $mid );
1193 foreach ( (array) $post_links_temp[0] as $link_test ) {
1194 if ( !in_array( $link_test, $pung ) ) { // If we haven't pung it already
1195 $test = @parse_url( $link_test );
1196 if ( false === $test )
1198 if ( isset( $test['query'] ) )
1199 $post_links[] = $link_test;
1200 elseif ( $test['path'] != '/' && $test['path'] != '' )
1201 $post_links[] = $link_test;
1205 foreach ( (array) $post_links as $url ) {
1206 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, $url . '%' ) ) ) {
1208 if ( $headers = wp_get_http_headers( $url) ) {
1209 $len = (int) $headers['content-length'];
1210 $type = $headers['content-type'];
1211 $allowed_types = array( 'video', 'audio' );
1213 // Check to see if we can figure out the mime type from
1215 $url_parts = @parse_url( $url );
1216 if ( false !== $url_parts ) {
1217 $extension = pathinfo( $url_parts['path'], PATHINFO_EXTENSION );
1218 if ( !empty( $extension ) ) {
1219 foreach ( get_allowed_mime_types( ) as $exts => $mime ) {
1220 if ( preg_match( '!^(' . $exts . ')$!i', $extension ) ) {
1228 if ( in_array( substr( $type, 0, strpos( $type, "/" ) ), $allowed_types ) ) {
1229 $meta_value = "$url\n$len\n$type\n";
1230 $wpdb->insert($wpdb->postmeta, array('post_id' => $post_ID, 'meta_key' => 'enclosure', 'meta_value' => $meta_value) );
1231 do_action( 'added_postmeta', $wpdb->insert_id, $post_ID, 'enclosure', $meta_value );
1239 * Perform a HTTP HEAD or GET request.
1241 * If $file_path is a writable filename, this will do a GET request and write
1242 * the file to that path.
1246 * @param string $url URL to fetch.
1247 * @param string|bool $file_path Optional. File path to write request to.
1248 * @param int $red (private) The number of Redirects followed, Upon 5 being hit, returns false.
1249 * @return bool|string False on failure and string of headers if HEAD request.
1251 function wp_get_http( $url, $file_path = false, $red = 1 ) {
1252 @set_time_limit( 60 );
1258 $options['redirection'] = 5;
1260 if ( false == $file_path )
1261 $options['method'] = 'HEAD';
1263 $options['method'] = 'GET';
1265 $response = wp_remote_request($url, $options);
1267 if ( is_wp_error( $response ) )
1270 $headers = wp_remote_retrieve_headers( $response );
1271 $headers['response'] = $response['response']['code'];
1273 // WP_HTTP no longer follows redirects for HEAD requests.
1274 if ( 'HEAD' == $options['method'] && in_array($headers['response'], array(301, 302)) && isset( $headers['location'] ) ) {
1275 return wp_get_http( $headers['location'], $file_path, ++$red );
1278 if ( false == $file_path )
1281 // GET request - write it to the supplied filename
1282 $out_fp = fopen($file_path, 'w');
1286 fwrite( $out_fp, $response['body']);
1294 * Retrieve HTTP Headers from URL.
1298 * @param string $url
1299 * @param bool $deprecated Not Used.
1300 * @return bool|string False on failure, headers on success.
1302 function wp_get_http_headers( $url, $deprecated = false ) {
1303 if ( !empty( $deprecated ) )
1304 _deprecated_argument( __FUNCTION__, '2.7' );
1306 $response = wp_remote_head( $url );
1308 if ( is_wp_error( $response ) )
1311 return wp_remote_retrieve_headers( $response );
1315 * Whether today is a new day.
1319 * @uses $previousday Previous day
1321 * @return int 1 when new day, 0 if not a new day.
1323 function is_new_day() {
1324 global $day, $previousday;
1325 if ( $day != $previousday )
1332 * Build URL query based on an associative and, or indexed array.
1334 * This is a convenient function for easily building url queries. It sets the
1335 * separator to '&' and uses _http_build_query() function.
1337 * @see _http_build_query() Used to build the query
1338 * @link http://us2.php.net/manual/en/function.http-build-query.php more on what
1339 * http_build_query() does.
1343 * @param array $data URL-encode key/value pairs.
1344 * @return string URL encoded string
1346 function build_query( $data ) {
1347 return _http_build_query( $data, null, '&', '', false );
1351 * Retrieve a modified URL query string.
1353 * You can rebuild the URL and append a new query variable to the URL query by
1354 * using this function. You can also retrieve the full URL with query data.
1356 * Adding a single key & value or an associative array. Setting a key value to
1357 * emptystring removes the key. Omitting oldquery_or_uri uses the $_SERVER
1362 * @param mixed $param1 Either newkey or an associative_array
1363 * @param mixed $param2 Either newvalue or oldquery or uri
1364 * @param mixed $param3 Optional. Old query or uri
1365 * @return string New URL query string.
1367 function add_query_arg() {
1369 if ( is_array( func_get_arg(0) ) ) {
1370 if ( @func_num_args() < 2 || false === @func_get_arg( 1 ) )
1371 $uri = $_SERVER['REQUEST_URI'];
1373 $uri = @func_get_arg( 1 );
1375 if ( @func_num_args() < 3 || false === @func_get_arg( 2 ) )
1376 $uri = $_SERVER['REQUEST_URI'];
1378 $uri = @func_get_arg( 2 );
1381 if ( $frag = strstr( $uri, '#' ) )
1382 $uri = substr( $uri, 0, -strlen( $frag ) );
1386 if ( preg_match( '|^https?://|i', $uri, $matches ) ) {
1387 $protocol = $matches[0];
1388 $uri = substr( $uri, strlen( $protocol ) );
1393 if ( strpos( $uri, '?' ) !== false ) {
1394 $parts = explode( '?', $uri, 2 );
1395 if ( 1 == count( $parts ) ) {
1399 $base = $parts[0] . '?';
1402 } elseif ( !empty( $protocol ) || strpos( $uri, '=' ) === false ) {
1410 wp_parse_str( $query, $qs );
1411 $qs = urlencode_deep( $qs ); // this re-URL-encodes things that were already in the query string
1412 if ( is_array( func_get_arg( 0 ) ) ) {
1413 $kayvees = func_get_arg( 0 );
1414 $qs = array_merge( $qs, $kayvees );
1416 $qs[func_get_arg( 0 )] = func_get_arg( 1 );
1419 foreach ( (array) $qs as $k => $v ) {
1424 $ret = build_query( $qs );
1425 $ret = trim( $ret, '?' );
1426 $ret = preg_replace( '#=(&|$)#', '$1', $ret );
1427 $ret = $protocol . $base . $ret . $frag;
1428 $ret = rtrim( $ret, '?' );
1433 * Removes an item or list from the query string.
1437 * @param string|array $key Query key or keys to remove.
1438 * @param bool $query When false uses the $_SERVER value.
1439 * @return string New URL query string.
1441 function remove_query_arg( $key, $query=false ) {
1442 if ( is_array( $key ) ) { // removing multiple keys
1443 foreach ( $key as $k )
1444 $query = add_query_arg( $k, false, $query );
1447 return add_query_arg( $key, false, $query );
1451 * Walks the array while sanitizing the contents.
1455 * @param array $array Array to used to walk while sanitizing contents.
1456 * @return array Sanitized $array.
1458 function add_magic_quotes( $array ) {
1459 foreach ( (array) $array as $k => $v ) {
1460 if ( is_array( $v ) ) {
1461 $array[$k] = add_magic_quotes( $v );
1463 $array[$k] = addslashes( $v );
1470 * HTTP request for URI to retrieve content.
1473 * @uses wp_remote_get()
1475 * @param string $uri URI/URL of web page to retrieve.
1476 * @return bool|string HTTP content. False on failure.
1478 function wp_remote_fopen( $uri ) {
1479 $parsed_url = @parse_url( $uri );
1481 if ( !$parsed_url || !is_array( $parsed_url ) )
1485 $options['timeout'] = 10;
1487 $response = wp_remote_get( $uri, $options );
1489 if ( is_wp_error( $response ) )
1492 return $response['body'];
1496 * Set up the WordPress query.
1500 * @param string $query_vars Default WP_Query arguments.
1502 function wp( $query_vars = '' ) {
1503 global $wp, $wp_query, $wp_the_query;
1504 $wp->main( $query_vars );
1506 if ( !isset($wp_the_query) )
1507 $wp_the_query = $wp_query;
1511 * Retrieve the description for the HTTP status.
1515 * @param int $code HTTP status code.
1516 * @return string Empty string if not found, or description if found.
1518 function get_status_header_desc( $code ) {
1519 global $wp_header_to_desc;
1521 $code = absint( $code );
1523 if ( !isset( $wp_header_to_desc ) ) {
1524 $wp_header_to_desc = array(
1526 101 => 'Switching Protocols',
1527 102 => 'Processing',
1532 203 => 'Non-Authoritative Information',
1533 204 => 'No Content',
1534 205 => 'Reset Content',
1535 206 => 'Partial Content',
1536 207 => 'Multi-Status',
1539 300 => 'Multiple Choices',
1540 301 => 'Moved Permanently',
1543 304 => 'Not Modified',
1546 307 => 'Temporary Redirect',
1548 400 => 'Bad Request',
1549 401 => 'Unauthorized',
1550 402 => 'Payment Required',
1553 405 => 'Method Not Allowed',
1554 406 => 'Not Acceptable',
1555 407 => 'Proxy Authentication Required',
1556 408 => 'Request Timeout',
1559 411 => 'Length Required',
1560 412 => 'Precondition Failed',
1561 413 => 'Request Entity Too Large',
1562 414 => 'Request-URI Too Long',
1563 415 => 'Unsupported Media Type',
1564 416 => 'Requested Range Not Satisfiable',
1565 417 => 'Expectation Failed',
1566 422 => 'Unprocessable Entity',
1568 424 => 'Failed Dependency',
1569 426 => 'Upgrade Required',
1571 500 => 'Internal Server Error',
1572 501 => 'Not Implemented',
1573 502 => 'Bad Gateway',
1574 503 => 'Service Unavailable',
1575 504 => 'Gateway Timeout',
1576 505 => 'HTTP Version Not Supported',
1577 506 => 'Variant Also Negotiates',
1578 507 => 'Insufficient Storage',
1579 510 => 'Not Extended'
1583 if ( isset( $wp_header_to_desc[$code] ) )
1584 return $wp_header_to_desc[$code];
1590 * Set HTTP status header.
1593 * @uses apply_filters() Calls 'status_header' on status header string, HTTP
1594 * HTTP code, HTTP code description, and protocol string as separate
1597 * @param int $header HTTP status code
1600 function status_header( $header ) {
1601 $text = get_status_header_desc( $header );
1603 if ( empty( $text ) )
1606 $protocol = $_SERVER["SERVER_PROTOCOL"];
1607 if ( 'HTTP/1.1' != $protocol && 'HTTP/1.0' != $protocol )
1608 $protocol = 'HTTP/1.0';
1609 $status_header = "$protocol $header $text";
1610 if ( function_exists( 'apply_filters' ) )
1611 $status_header = apply_filters( 'status_header', $status_header, $header, $text, $protocol );
1613 return @header( $status_header, true, $header );
1617 * Gets the header information to prevent caching.
1619 * The several different headers cover the different ways cache prevention is handled
1620 * by different browsers
1624 * @uses apply_filters()
1625 * @return array The associative array of header names and field values.
1627 function wp_get_nocache_headers() {
1629 'Expires' => 'Wed, 11 Jan 1984 05:00:00 GMT',
1630 'Last-Modified' => gmdate( 'D, d M Y H:i:s' ) . ' GMT',
1631 'Cache-Control' => 'no-cache, must-revalidate, max-age=0',
1632 'Pragma' => 'no-cache',
1635 if ( function_exists('apply_filters') ) {
1636 $headers = apply_filters('nocache_headers', $headers);
1642 * Sets the headers to prevent caching for the different browsers.
1644 * Different browsers support different nocache headers, so several headers must
1645 * be sent so that all of them get the point that no caching should occur.
1648 * @uses wp_get_nocache_headers()
1650 function nocache_headers() {
1651 $headers = wp_get_nocache_headers();
1652 foreach( (array) $headers as $name => $field_value )
1653 @header("{$name}: {$field_value}");
1657 * Set the headers for caching for 10 days with JavaScript content type.
1661 function cache_javascript_headers() {
1662 $expiresOffset = 864000; // 10 days
1663 header( "Content-Type: text/javascript; charset=" . get_bloginfo( 'charset' ) );
1664 header( "Vary: Accept-Encoding" ); // Handle proxies
1665 header( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $expiresOffset ) . " GMT" );
1669 * Retrieve the number of database queries during the WordPress execution.
1673 * @return int Number of database queries
1675 function get_num_queries() {
1677 return $wpdb->num_queries;
1681 * Whether input is yes or no. Must be 'y' to be true.
1685 * @param string $yn Character string containing either 'y' or 'n'
1686 * @return bool True if yes, false on anything else
1688 function bool_from_yn( $yn ) {
1689 return ( strtolower( $yn ) == 'y' );
1693 * Loads the feed template from the use of an action hook.
1695 * If the feed action does not have a hook, then the function will die with a
1696 * message telling the visitor that the feed is not valid.
1698 * It is better to only have one hook for each feed.
1701 * @uses $wp_query Used to tell if the use a comment feed.
1702 * @uses do_action() Calls 'do_feed_$feed' hook, if a hook exists for the feed.
1704 function do_feed() {
1707 $feed = get_query_var( 'feed' );
1709 // Remove the pad, if present.
1710 $feed = preg_replace( '/^_+/', '', $feed );
1712 if ( $feed == '' || $feed == 'feed' )
1713 $feed = get_default_feed();
1715 $hook = 'do_feed_' . $feed;
1716 if ( !has_action($hook) ) {
1717 $message = sprintf( __( 'ERROR: %s is not a valid feed template.' ), esc_html($feed));
1718 wp_die( $message, '', array( 'response' => 404 ) );
1721 do_action( $hook, $wp_query->is_comment_feed );
1725 * Load the RDF RSS 0.91 Feed template.
1729 function do_feed_rdf() {
1730 load_template( ABSPATH . WPINC . '/feed-rdf.php' );
1734 * Load the RSS 1.0 Feed Template
1738 function do_feed_rss() {
1739 load_template( ABSPATH . WPINC . '/feed-rss.php' );
1743 * Load either the RSS2 comment feed or the RSS2 posts feed.
1747 * @param bool $for_comments True for the comment feed, false for normal feed.
1749 function do_feed_rss2( $for_comments ) {
1750 if ( $for_comments )
1751 load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
1753 load_template( ABSPATH . WPINC . '/feed-rss2.php' );
1757 * Load either Atom comment feed or Atom posts feed.
1761 * @param bool $for_comments True for the comment feed, false for normal feed.
1763 function do_feed_atom( $for_comments ) {
1765 load_template( ABSPATH . WPINC . '/feed-atom-comments.php');
1767 load_template( ABSPATH . WPINC . '/feed-atom.php' );
1771 * Display the robot.txt file content.
1773 * The echo content should be with usage of the permalinks or for creating the
1777 * @uses do_action() Calls 'do_robotstxt' hook for displaying robot.txt rules.
1779 function do_robots() {
1780 header( 'Content-Type: text/plain; charset=utf-8' );
1782 do_action( 'do_robotstxt' );
1785 $public = get_option( 'blog_public' );
1786 if ( '0' == $public ) {
1787 $output .= "User-agent: *\n";
1788 $output .= "Disallow: /\n";
1790 $output .= "User-agent: *\n";
1791 $output .= "Disallow:\n";
1794 echo apply_filters('robots_txt', $output, $public);
1798 * Test whether blog is already installed.
1800 * The cache will be checked first. If you have a cache plugin, which saves the
1801 * cache values, then this will work. If you use the default WordPress cache,
1802 * and the database goes away, then you might have problems.
1804 * Checks for the option siteurl for whether WordPress is installed.
1809 * @return bool Whether blog is already installed.
1811 function is_blog_installed() {
1814 // Check cache first. If options table goes away and we have true cached, oh well.
1815 if ( wp_cache_get( 'is_blog_installed' ) )
1818 $suppress = $wpdb->suppress_errors();
1819 if ( ! defined( 'WP_INSTALLING' ) ) {
1820 $alloptions = wp_load_alloptions();
1822 // If siteurl is not set to autoload, check it specifically
1823 if ( !isset( $alloptions['siteurl'] ) )
1824 $installed = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'siteurl'" );
1826 $installed = $alloptions['siteurl'];
1827 $wpdb->suppress_errors( $suppress );
1829 $installed = !empty( $installed );
1830 wp_cache_set( 'is_blog_installed', $installed );
1835 $suppress = $wpdb->suppress_errors();
1836 $tables = $wpdb->get_col('SHOW TABLES');
1837 $wpdb->suppress_errors( $suppress );
1839 $wp_tables = $wpdb->tables();
1840 // Loop over the WP tables. If none exist, then scratch install is allowed.
1841 // If one or more exist, suggest table repair since we got here because the options
1842 // table could not be accessed.
1843 foreach ( $wp_tables as $table ) {
1844 // If one of the WP tables exist, then we are in an insane state.
1845 if ( in_array( $table, $tables ) ) {
1846 // The existence of custom user tables shouldn't suggest an insane state or prevent a clean install.
1847 if ( defined( 'CUSTOM_USER_TABLE' ) && CUSTOM_USER_TABLE == $table )
1849 if ( defined( 'CUSTOM_USER_META_TABLE' ) && CUSTOM_USER_META_TABLE == $table )
1852 // If visiting repair.php, return true and let it take over.
1853 if ( defined('WP_REPAIRING') )
1855 // Die with a DB error.
1856 $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' );
1861 wp_cache_set( 'is_blog_installed', false );
1867 * Retrieve URL with nonce added to URL query.
1869 * @package WordPress
1870 * @subpackage Security
1873 * @param string $actionurl URL to add nonce action
1874 * @param string $action Optional. Nonce action name
1875 * @return string URL with nonce action added.
1877 function wp_nonce_url( $actionurl, $action = -1 ) {
1878 $actionurl = str_replace( '&', '&', $actionurl );
1879 return esc_html( add_query_arg( '_wpnonce', wp_create_nonce( $action ), $actionurl ) );
1883 * Retrieve or display nonce hidden field for forms.
1885 * The nonce field is used to validate that the contents of the form came from
1886 * the location on the current site and not somewhere else. The nonce does not
1887 * offer absolute protection, but should protect against most cases. It is very
1888 * important to use nonce field in forms.
1890 * If you set $echo to true and set $referer to true, then you will need to
1891 * retrieve the {@link wp_referer_field() wp referer field}. If you have the
1892 * $referer set to true and are echoing the nonce field, it will also echo the
1895 * The $action and $name are optional, but if you want to have better security,
1896 * it is strongly suggested to set those two parameters. It is easier to just
1897 * call the function without any parameters, because validation of the nonce
1898 * doesn't require any parameters, but since crackers know what the default is
1899 * it won't be difficult for them to find a way around your nonce and cause
1902 * The input name will be whatever $name value you gave. The input value will be
1903 * the nonce creation value.
1905 * @package WordPress
1906 * @subpackage Security
1909 * @param string $action Optional. Action name.
1910 * @param string $name Optional. Nonce name.
1911 * @param bool $referer Optional, default true. Whether to set the referer field for validation.
1912 * @param bool $echo Optional, default true. Whether to display or return hidden form field.
1913 * @return string Nonce field.
1915 function wp_nonce_field( $action = -1, $name = "_wpnonce", $referer = true , $echo = true ) {
1916 $name = esc_attr( $name );
1917 $nonce_field = '<input type="hidden" id="' . $name . '" name="' . $name . '" value="' . wp_create_nonce( $action ) . '" />';
1922 wp_referer_field( $echo );
1924 return $nonce_field;
1928 * Retrieve or display referer hidden field for forms.
1930 * The referer link is the current Request URI from the server super global. The
1931 * input name is '_wp_http_referer', in case you wanted to check manually.
1933 * @package WordPress
1934 * @subpackage Security
1937 * @param bool $echo Whether to echo or return the referer field.
1938 * @return string Referer field.
1940 function wp_referer_field( $echo = true ) {
1941 $ref = esc_attr( $_SERVER['REQUEST_URI'] );
1942 $referer_field = '<input type="hidden" name="_wp_http_referer" value="'. $ref . '" />';
1945 echo $referer_field;
1946 return $referer_field;
1950 * Retrieve or display original referer hidden field for forms.
1952 * The input name is '_wp_original_http_referer' and will be either the same
1953 * value of {@link wp_referer_field()}, if that was posted already or it will
1954 * be the current page, if it doesn't exist.
1956 * @package WordPress
1957 * @subpackage Security
1960 * @param bool $echo Whether to echo the original http referer
1961 * @param string $jump_back_to Optional, default is 'current'. Can be 'previous' or page you want to jump back to.
1962 * @return string Original referer field.
1964 function wp_original_referer_field( $echo = true, $jump_back_to = 'current' ) {
1965 $jump_back_to = ( 'previous' == $jump_back_to ) ? wp_get_referer() : $_SERVER['REQUEST_URI'];
1966 $ref = ( wp_get_original_referer() ) ? wp_get_original_referer() : $jump_back_to;
1967 $orig_referer_field = '<input type="hidden" name="_wp_original_http_referer" value="' . esc_attr( stripslashes( $ref ) ) . '" />';
1969 echo $orig_referer_field;
1970 return $orig_referer_field;
1974 * Retrieve referer from '_wp_http_referer', HTTP referer, or current page respectively.
1976 * @package WordPress
1977 * @subpackage Security
1980 * @return string|bool False on failure. Referer URL on success.
1982 function wp_get_referer() {
1984 if ( ! empty( $_REQUEST['_wp_http_referer'] ) )
1985 $ref = $_REQUEST['_wp_http_referer'];
1986 else if ( ! empty( $_SERVER['HTTP_REFERER'] ) )
1987 $ref = $_SERVER['HTTP_REFERER'];
1989 if ( $ref !== $_SERVER['REQUEST_URI'] )
1995 * Retrieve original referer that was posted, if it exists.
1997 * @package WordPress
1998 * @subpackage Security
2001 * @return string|bool False if no original referer or original referer if set.
2003 function wp_get_original_referer() {
2004 if ( !empty( $_REQUEST['_wp_original_http_referer'] ) )
2005 return $_REQUEST['_wp_original_http_referer'];
2010 * Recursive directory creation based on full path.
2012 * Will attempt to set permissions on folders.
2016 * @param string $target Full path to attempt to create.
2017 * @return bool Whether the path was created. True if path already exists.
2019 function wp_mkdir_p( $target ) {
2020 // from php.net/mkdir user contributed notes
2021 $target = str_replace( '//', '/', $target );
2023 // safe mode fails with a trailing slash under certain PHP versions.
2024 $target = rtrim($target, '/'); // Use rtrim() instead of untrailingslashit to avoid formatting.php dependency.
2025 if ( empty($target) )
2028 if ( file_exists( $target ) )
2029 return @is_dir( $target );
2031 // Attempting to create the directory may clutter up our display.
2032 if ( @mkdir( $target ) ) {
2033 $stat = @stat( dirname( $target ) );
2034 $dir_perms = $stat['mode'] & 0007777; // Get the permission bits.
2035 @chmod( $target, $dir_perms );
2037 } elseif ( is_dir( dirname( $target ) ) ) {
2041 // If the above failed, attempt to create the parent node, then try again.
2042 if ( ( $target != '/' ) && ( wp_mkdir_p( dirname( $target ) ) ) )
2043 return wp_mkdir_p( $target );
2049 * Test if a give filesystem path is absolute ('/foo/bar', 'c:\windows').
2053 * @param string $path File path
2054 * @return bool True if path is absolute, false is not absolute.
2056 function path_is_absolute( $path ) {
2057 // this is definitive if true but fails if $path does not exist or contains a symbolic link
2058 if ( realpath($path) == $path )
2061 if ( strlen($path) == 0 || $path{0} == '.' )
2064 // windows allows absolute paths like this
2065 if ( preg_match('#^[a-zA-Z]:\\\\#', $path) )
2068 // a path starting with / or \ is absolute; anything else is relative
2069 return (bool) preg_match('#^[/\\\\]#', $path);
2073 * Join two filesystem paths together (e.g. 'give me $path relative to $base').
2075 * If the $path is absolute, then it the full path is returned.
2079 * @param string $base
2080 * @param string $path
2081 * @return string The path with the base or absolute path.
2083 function path_join( $base, $path ) {
2084 if ( path_is_absolute($path) )
2087 return rtrim($base, '/') . '/' . ltrim($path, '/');
2091 * Get an array containing the current upload directory's path and url.
2093 * Checks the 'upload_path' option, which should be from the web root folder,
2094 * and if it isn't empty it will be used. If it is empty, then the path will be
2095 * 'WP_CONTENT_DIR/uploads'. If the 'UPLOADS' constant is defined, then it will
2096 * override the 'upload_path' option and 'WP_CONTENT_DIR/uploads' path.
2098 * The upload URL path is set either by the 'upload_url_path' option or by using
2099 * the 'WP_CONTENT_URL' constant and appending '/uploads' to the path.
2101 * If the 'uploads_use_yearmonth_folders' is set to true (checkbox if checked in
2102 * the administration settings panel), then the time will be used. The format
2103 * will be year first and then month.
2105 * If the path couldn't be created, then an error will be returned with the key
2106 * 'error' containing the error message. The error suggests that the parent
2107 * directory is not writable by the server.
2109 * On success, the returned array will have many indices:
2110 * 'path' - base directory and sub directory or full path to upload directory.
2111 * 'url' - base url and sub directory or absolute URL to upload directory.
2112 * 'subdir' - sub directory if uploads use year/month folders option is on.
2113 * 'basedir' - path without subdir.
2114 * 'baseurl' - URL path without subdir.
2115 * 'error' - set to false.
2118 * @uses apply_filters() Calls 'upload_dir' on returned array.
2120 * @param string $time Optional. Time formatted in 'yyyy/mm'.
2121 * @return array See above for description.
2123 function wp_upload_dir( $time = null ) {
2125 $siteurl = get_option( 'siteurl' );
2126 $upload_path = get_option( 'upload_path' );
2127 $upload_path = trim($upload_path);
2128 $main_override = is_multisite() && defined( 'MULTISITE' ) && is_main_site();
2129 if ( empty($upload_path) ) {
2130 $dir = WP_CONTENT_DIR . '/uploads';
2132 $dir = $upload_path;
2133 if ( 'wp-content/uploads' == $upload_path ) {
2134 $dir = WP_CONTENT_DIR . '/uploads';
2135 } elseif ( 0 !== strpos($dir, ABSPATH) ) {
2136 // $dir is absolute, $upload_path is (maybe) relative to ABSPATH
2137 $dir = path_join( ABSPATH, $dir );
2141 if ( !$url = get_option( 'upload_url_path' ) ) {
2142 if ( empty($upload_path) || ( 'wp-content/uploads' == $upload_path ) || ( $upload_path == $dir ) )
2143 $url = WP_CONTENT_URL . '/uploads';
2145 $url = trailingslashit( $siteurl ) . $upload_path;
2148 if ( defined('UPLOADS') && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
2149 $dir = ABSPATH . UPLOADS;
2150 $url = trailingslashit( $siteurl ) . UPLOADS;
2153 if ( is_multisite() && !$main_override && ( !isset( $switched ) || $switched === false ) ) {
2154 if ( defined( 'BLOGUPLOADDIR' ) )
2155 $dir = untrailingslashit(BLOGUPLOADDIR);
2156 $url = str_replace( UPLOADS, 'files', $url );
2163 if ( get_option( 'uploads_use_yearmonth_folders' ) ) {
2164 // Generate the yearly and monthly dirs
2166 $time = current_time( 'mysql' );
2167 $y = substr( $time, 0, 4 );
2168 $m = substr( $time, 5, 2 );
2175 $uploads = apply_filters( 'upload_dir', array( 'path' => $dir, 'url' => $url, 'subdir' => $subdir, 'basedir' => $bdir, 'baseurl' => $burl, 'error' => false ) );
2177 // Make sure we have an uploads dir
2178 if ( ! wp_mkdir_p( $uploads['path'] ) ) {
2179 $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), $uploads['path'] );
2180 return array( 'error' => $message );
2187 * Get a filename that is sanitized and unique for the given directory.
2189 * If the filename is not unique, then a number will be added to the filename
2190 * before the extension, and will continue adding numbers until the filename is
2193 * The callback must accept two parameters, the first one is the directory and
2194 * the second is the filename. The callback must be a function.
2198 * @param string $dir
2199 * @param string $filename
2200 * @param string $unique_filename_callback Function name, must be a function.
2201 * @return string New filename, if given wasn't unique.
2203 function wp_unique_filename( $dir, $filename, $unique_filename_callback = null ) {
2204 // sanitize the file name before we begin processing
2205 $filename = sanitize_file_name($filename);
2207 // separate the filename into a name and extension
2208 $info = pathinfo($filename);
2209 $ext = !empty($info['extension']) ? '.' . $info['extension'] : '';
2210 $name = basename($filename, $ext);
2212 // edge case: if file is named '.ext', treat as an empty name
2213 if ( $name === $ext )
2216 // Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
2217 if ( $unique_filename_callback && is_callable( $unique_filename_callback ) ) {
2218 $filename = $unique_filename_callback( $dir, $name );
2222 // change '.ext' to lower case
2223 if ( $ext && strtolower($ext) != $ext ) {
2224 $ext2 = strtolower($ext);
2225 $filename2 = preg_replace( '|' . preg_quote($ext) . '$|', $ext2, $filename );
2227 // check for both lower and upper case extension or image sub-sizes may be overwritten
2228 while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
2229 $new_number = $number + 1;
2230 $filename = str_replace( "$number$ext", "$new_number$ext", $filename );
2231 $filename2 = str_replace( "$number$ext2", "$new_number$ext2", $filename2 );
2232 $number = $new_number;
2237 while ( file_exists( $dir . "/$filename" ) ) {
2238 if ( '' == "$number$ext" )
2239 $filename = $filename . ++$number . $ext;
2241 $filename = str_replace( "$number$ext", ++$number . $ext, $filename );
2249 * Create a file in the upload folder with given content.
2251 * If there is an error, then the key 'error' will exist with the error message.
2252 * If success, then the key 'file' will have the unique file path, the 'url' key
2253 * will have the link to the new file. and the 'error' key will be set to false.
2255 * This function will not move an uploaded file to the upload folder. It will
2256 * create a new file with the content in $bits parameter. If you move the upload
2257 * file, read the content of the uploaded file, and then you can give the
2258 * filename and content to this function, which will add it to the upload
2261 * The permissions will be set on the new file automatically by this function.
2265 * @param string $name
2266 * @param null $deprecated Never used. Set to null.
2267 * @param mixed $bits File content
2268 * @param string $time Optional. Time formatted in 'yyyy/mm'.
2271 function wp_upload_bits( $name, $deprecated, $bits, $time = null ) {
2272 if ( !empty( $deprecated ) )
2273 _deprecated_argument( __FUNCTION__, '2.0' );
2275 if ( empty( $name ) )
2276 return array( 'error' => __( 'Empty filename' ) );
2278 $wp_filetype = wp_check_filetype( $name );
2279 if ( !$wp_filetype['ext'] )
2280 return array( 'error' => __( 'Invalid file type' ) );
2282 $upload = wp_upload_dir( $time );
2284 if ( $upload['error'] !== false )
2287 $upload_bits_error = apply_filters( 'wp_upload_bits', array( 'name' => $name, 'bits' => $bits, 'time' => $time ) );
2288 if ( !is_array( $upload_bits_error ) ) {
2289 $upload[ 'error' ] = $upload_bits_error;
2293 $filename = wp_unique_filename( $upload['path'], $name );
2295 $new_file = $upload['path'] . "/$filename";
2296 if ( ! wp_mkdir_p( dirname( $new_file ) ) ) {
2297 $message = sprintf( __( 'Unable to create directory %s. Is its parent directory writable by the server?' ), dirname( $new_file ) );
2298 return array( 'error' => $message );
2301 $ifp = @ fopen( $new_file, 'wb' );
2303 return array( 'error' => sprintf( __( 'Could not write file %s' ), $new_file ) );
2305 @fwrite( $ifp, $bits );
2309 // Set correct file permissions
2310 $stat = @ stat( dirname( $new_file ) );
2311 $perms = $stat['mode'] & 0007777;
2312 $perms = $perms & 0000666;
2313 @ chmod( $new_file, $perms );
2317 $url = $upload['url'] . "/$filename";
2319 return array( 'file' => $new_file, 'url' => $url, 'error' => false );
2323 * Retrieve the file type based on the extension name.
2325 * @package WordPress
2327 * @uses apply_filters() Calls 'ext2type' hook on default supported types.
2329 * @param string $ext The extension to search.
2330 * @return string|null The file type, example: audio, video, document, spreadsheet, etc. Null if not found.
2332 function wp_ext2type( $ext ) {
2333 $ext2type = apply_filters( 'ext2type', array(
2334 'audio' => array( 'aac', 'ac3', 'aif', 'aiff', 'm3a', 'm4a', 'm4b', 'mka', 'mp1', 'mp2', 'mp3', 'ogg', 'oga', 'ram', 'wav', 'wma' ),
2335 'video' => array( 'asf', 'avi', 'divx', 'dv', 'flv', 'm4v', 'mkv', 'mov', 'mp4', 'mpeg', 'mpg', 'mpv', 'ogm', 'ogv', 'qt', 'rm', 'vob', 'wmv' ),
2336 'document' => array( 'doc', 'docx', 'docm', 'dotm', 'odt', 'pages', 'pdf', 'rtf', 'wp', 'wpd' ),
2337 'spreadsheet' => array( 'numbers', 'ods', 'xls', 'xlsx', 'xlsb', 'xlsm' ),
2338 'interactive' => array( 'key', 'ppt', 'pptx', 'pptm', 'odp', 'swf' ),
2339 'text' => array( 'asc', 'csv', 'tsv', 'txt' ),
2340 'archive' => array( 'bz2', 'cab', 'dmg', 'gz', 'rar', 'sea', 'sit', 'sqx', 'tar', 'tgz', 'zip' ),
2341 'code' => array( 'css', 'htm', 'html', 'php', 'js' ),
2343 foreach ( $ext2type as $type => $exts )
2344 if ( in_array( $ext, $exts ) )
2349 * Retrieve the file type from the file name.
2351 * You can optionally define the mime array, if needed.
2355 * @param string $filename File name or path.
2356 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2357 * @return array Values with extension first and mime type.
2359 function wp_check_filetype( $filename, $mimes = null ) {
2360 if ( empty($mimes) )
2361 $mimes = get_allowed_mime_types();
2365 foreach ( $mimes as $ext_preg => $mime_match ) {
2366 $ext_preg = '!\.(' . $ext_preg . ')$!i';
2367 if ( preg_match( $ext_preg, $filename, $ext_matches ) ) {
2368 $type = $mime_match;
2369 $ext = $ext_matches[1];
2374 return compact( 'ext', 'type' );
2378 * Attempt to determine the real file type of a file.
2379 * If unable to, the file name extension will be used to determine type.
2381 * If it's determined that the extension does not match the file's real type,
2382 * then the "proper_filename" value will be set with a proper filename and extension.
2384 * Currently this function only supports validating images known to getimagesize().
2388 * @param string $file Full path to the image.
2389 * @param string $filename The filename of the image (may differ from $file due to $file being in a tmp directory)
2390 * @param array $mimes Optional. Key is the file extension with value as the mime type.
2391 * @return array Values for the extension, MIME, and either a corrected filename or false if original $filename is valid
2393 function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
2395 $proper_filename = false;
2397 // Do basic extension validation and MIME mapping
2398 $wp_filetype = wp_check_filetype( $filename, $mimes );
2399 extract( $wp_filetype );
2401 // We can't do any further validation without a file to work with
2402 if ( ! file_exists( $file ) )
2403 return compact( 'ext', 'type', 'proper_filename' );
2405 // We're able to validate images using GD
2406 if ( $type && 0 === strpos( $type, 'image/' ) && function_exists('getimagesize') ) {
2408 // Attempt to figure out what type of image it actually is
2409 $imgstats = @getimagesize( $file );
2411 // If getimagesize() knows what kind of image it really is and if the real MIME doesn't match the claimed MIME
2412 if ( !empty($imgstats['mime']) && $imgstats['mime'] != $type ) {
2413 // This is a simplified array of MIMEs that getimagesize() can detect and their extensions
2414 // You shouldn't need to use this filter, but it's here just in case
2415 $mime_to_ext = apply_filters( 'getimagesize_mimes_to_exts', array(
2416 'image/jpeg' => 'jpg',
2417 'image/png' => 'png',
2418 'image/gif' => 'gif',
2419 'image/bmp' => 'bmp',
2420 'image/tiff' => 'tif',
2423 // Replace whatever is after the last period in the filename with the correct extension
2424 if ( ! empty( $mime_to_ext[ $imgstats['mime'] ] ) ) {
2425 $filename_parts = explode( '.', $filename );
2426 array_pop( $filename_parts );
2427 $filename_parts[] = $mime_to_ext[ $imgstats['mime'] ];
2428 $new_filename = implode( '.', $filename_parts );
2430 if ( $new_filename != $filename )
2431 $proper_filename = $new_filename; // Mark that it changed
2433 // Redefine the extension / MIME
2434 $wp_filetype = wp_check_filetype( $new_filename, $mimes );
2435 extract( $wp_filetype );
2440 // Let plugins try and validate other types of files
2441 // Should return an array in the style of array( 'ext' => $ext, 'type' => $type, 'proper_filename' => $proper_filename )
2442 return apply_filters( 'wp_check_filetype_and_ext', compact( 'ext', 'type', 'proper_filename' ), $file, $filename, $mimes );
2446 * Retrieve list of allowed mime types and file extensions.
2450 * @return array Array of mime types keyed by the file extension regex corresponding to those types.
2452 function get_allowed_mime_types() {
2453 static $mimes = false;
2456 // Accepted MIME types are set here as PCRE unless provided.
2457 $mimes = apply_filters( 'upload_mimes', array(
2458 'jpg|jpeg|jpe' => 'image/jpeg',
2459 'gif' => 'image/gif',
2460 'png' => 'image/png',
2461 'bmp' => 'image/bmp',
2462 'tif|tiff' => 'image/tiff',
2463 'ico' => 'image/x-icon',
2464 'asf|asx|wax|wmv|wmx' => 'video/asf',
2465 'avi' => 'video/avi',
2466 'divx' => 'video/divx',
2467 'flv' => 'video/x-flv',
2468 'mov|qt' => 'video/quicktime',
2469 'mpeg|mpg|mpe' => 'video/mpeg',
2470 'txt|asc|c|cc|h' => 'text/plain',
2471 'csv' => 'text/csv',
2472 'tsv' => 'text/tab-separated-values',
2473 'rtx' => 'text/richtext',
2474 'css' => 'text/css',
2475 'htm|html' => 'text/html',
2476 'mp3|m4a|m4b' => 'audio/mpeg',
2477 'mp4|m4v' => 'video/mp4',
2478 'ra|ram' => 'audio/x-realaudio',
2479 'wav' => 'audio/wav',
2480 'ogg|oga' => 'audio/ogg',
2481 'ogv' => 'video/ogg',
2482 'mid|midi' => 'audio/midi',
2483 'wma' => 'audio/wma',
2484 'mka' => 'audio/x-matroska',
2485 'mkv' => 'video/x-matroska',
2486 'rtf' => 'application/rtf',
2487 'js' => 'application/javascript',
2488 'pdf' => 'application/pdf',
2489 'doc|docx' => 'application/msword',
2490 'pot|pps|ppt|pptx|ppam|pptm|sldm|ppsm|potm' => 'application/vnd.ms-powerpoint',
2491 'wri' => 'application/vnd.ms-write',
2492 'xla|xls|xlsx|xlt|xlw|xlam|xlsb|xlsm|xltm' => 'application/vnd.ms-excel',
2493 'mdb' => 'application/vnd.ms-access',
2494 'mpp' => 'application/vnd.ms-project',
2495 'docm|dotm' => 'application/vnd.ms-word',
2496 'pptx|sldx|ppsx|potx' => 'application/vnd.openxmlformats-officedocument.presentationml',
2497 'xlsx|xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml',
2498 'docx|dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml',
2499 'onetoc|onetoc2|onetmp|onepkg' => 'application/onenote',
2500 'swf' => 'application/x-shockwave-flash',
2501 'class' => 'application/java',
2502 'tar' => 'application/x-tar',
2503 'zip' => 'application/zip',
2504 'gz|gzip' => 'application/x-gzip',
2505 'exe' => 'application/x-msdownload',
2506 // openoffice formats
2507 'odt' => 'application/vnd.oasis.opendocument.text',
2508 'odp' => 'application/vnd.oasis.opendocument.presentation',
2509 'ods' => 'application/vnd.oasis.opendocument.spreadsheet',
2510 'odg' => 'application/vnd.oasis.opendocument.graphics',
2511 'odc' => 'application/vnd.oasis.opendocument.chart',
2512 'odb' => 'application/vnd.oasis.opendocument.database',
2513 'odf' => 'application/vnd.oasis.opendocument.formula',
2514 // wordperfect formats
2515 'wp|wpd' => 'application/wordperfect',
2523 * Retrieve nonce action "Are you sure" message.
2525 * The action is split by verb and noun. The action format is as follows:
2526 * verb-action_extra. The verb is before the first dash and has the format of
2527 * letters and no spaces and numbers. The noun is after the dash and before the
2528 * underscore, if an underscore exists. The noun is also only letters.
2530 * The filter will be called for any action, which is not defined by WordPress.
2531 * You may use the filter for your plugin to explain nonce actions to the user,
2532 * when they get the "Are you sure?" message. The filter is in the format of
2533 * 'explain_nonce_$verb-$noun' with the $verb replaced by the found verb and the
2534 * $noun replaced by the found noun. The two parameters that are given to the
2535 * hook are the localized "Are you sure you want to do this?" message with the
2536 * extra text (the text after the underscore).
2538 * @package WordPress
2539 * @subpackage Security
2542 * @param string $action Nonce action.
2543 * @return string Are you sure message.
2545 function wp_explain_nonce( $action ) {
2546 if ( $action !== -1 && preg_match( '/([a-z]+)-([a-z]+)(_(.+))?/', $action, $matches ) ) {
2547 $verb = $matches[1];
2548 $noun = $matches[2];
2551 $trans['update']['attachment'] = array( __( 'Your attempt to edit this attachment: “%s” has failed.' ), 'get_the_title' );
2553 $trans['add']['category'] = array( __( 'Your attempt to add this category has failed.' ), false );
2554 $trans['delete']['category'] = array( __( 'Your attempt to delete this category: “%s” has failed.' ), 'get_cat_name' );
2555 $trans['update']['category'] = array( __( 'Your attempt to edit this category: “%s” has failed.' ), 'get_cat_name' );
2557 $trans['delete']['comment'] = array( __( 'Your attempt to delete this comment: “%s” has failed.' ), 'use_id' );
2558 $trans['unapprove']['comment'] = array( __( 'Your attempt to unapprove this comment: “%s” has failed.' ), 'use_id' );
2559 $trans['approve']['comment'] = array( __( 'Your attempt to approve this comment: “%s” has failed.' ), 'use_id' );
2560 $trans['update']['comment'] = array( __( 'Your attempt to edit this comment: “%s” has failed.' ), 'use_id' );
2561 $trans['bulk']['comments'] = array( __( 'Your attempt to bulk modify comments has failed.' ), false );
2562 $trans['moderate']['comments'] = array( __( 'Your attempt to moderate comments has failed.' ), false );
2564 $trans['add']['bookmark'] = array( __( 'Your attempt to add this link has failed.' ), false );
2565 $trans['delete']['bookmark'] = array( __( 'Your attempt to delete this link: “%s” has failed.' ), 'use_id' );
2566 $trans['update']['bookmark'] = array( __( 'Your attempt to edit this link: “%s” has failed.' ), 'use_id' );
2567 $trans['bulk']['bookmarks'] = array( __( 'Your attempt to bulk modify links has failed.' ), false );
2569 $trans['add']['page'] = array( __( 'Your attempt to add this page has failed.' ), false );
2570 $trans['delete']['page'] = array( __( 'Your attempt to delete this page: “%s” has failed.' ), 'get_the_title' );
2571 $trans['update']['page'] = array( __( 'Your attempt to edit this page: “%s” has failed.' ), 'get_the_title' );
2573 $trans['edit']['plugin'] = array( __( 'Your attempt to edit this plugin file: “%s” has failed.' ), 'use_id' );
2574 $trans['activate']['plugin'] = array( __( 'Your attempt to activate this plugin: “%s” has failed.' ), 'use_id' );
2575 $trans['deactivate']['plugin'] = array( __( 'Your attempt to deactivate this plugin: “%s” has failed.' ), 'use_id' );
2576 $trans['upgrade']['plugin'] = array( __( 'Your attempt to upgrade this plugin: “%s” has failed.' ), 'use_id' );
2578 $trans['add']['post'] = array( __( 'Your attempt to add this post has failed.' ), false );
2579 $trans['delete']['post'] = array( __( 'Your attempt to delete this post: “%s” has failed.' ), 'get_the_title' );
2580 $trans['update']['post'] = array( __( 'Your attempt to edit this post: “%s” has failed.' ), 'get_the_title' );
2582 $trans['add']['user'] = array( __( 'Your attempt to add this user has failed.' ), false );
2583 $trans['delete']['users'] = array( __( 'Your attempt to delete users has failed.' ), false );
2584 $trans['bulk']['users'] = array( __( 'Your attempt to bulk modify users has failed.' ), false );
2585 $trans['update']['user'] = array( __( 'Your attempt to edit this user: “%s” has failed.' ), 'get_the_author_meta', 'display_name' );
2586 $trans['update']['profile'] = array( __( 'Your attempt to modify the profile for: “%s” has failed.' ), 'get_the_author_meta', 'display_name' );
2588 $trans['update']['options'] = array( __( 'Your attempt to edit your settings has failed.' ), false );
2589 $trans['update']['permalink'] = array( __( 'Your attempt to change your permalink structure to: %s has failed.' ), 'use_id' );
2590 $trans['edit']['file'] = array( __( 'Your attempt to edit this file: “%s” has failed.' ), 'use_id' );
2591 $trans['edit']['theme'] = array( __( 'Your attempt to edit this theme file: “%s” has failed.' ), 'use_id' );
2592 $trans['switch']['theme'] = array( __( 'Your attempt to switch to this theme: “%s” has failed.' ), 'use_id' );
2594 $trans['log']['out'] = array( sprintf( __( 'You are attempting to log out of %s' ), get_bloginfo( 'sitename' ) ), false );
2596 if ( isset( $trans[$verb][$noun] ) ) {
2597 if ( !empty( $trans[$verb][$noun][1] ) ) {
2598 $lookup = $trans[$verb][$noun][1];
2599 if ( isset($trans[$verb][$noun][2]) )
2600 $lookup_value = $trans[$verb][$noun][2];
2601 $object = $matches[4];
2602 if ( 'use_id' != $lookup ) {
2603 if ( isset( $lookup_value ) )
2604 $object = call_user_func( $lookup, $lookup_value, $object );
2606 $object = call_user_func( $lookup, $object );
2608 return sprintf( $trans[$verb][$noun][0], esc_html($object) );
2610 return $trans[$verb][$noun][0];
2614 return apply_filters( 'explain_nonce_' . $verb . '-' . $noun, __( 'Are you sure you want to do this?' ), isset($matches[4]) ? $matches[4] : '' );
2616 return apply_filters( 'explain_nonce_' . $action, __( 'Are you sure you want to do this?' ) );
2621 * Display "Are You Sure" message to confirm the action being taken.
2623 * If the action has the nonce explain message, then it will be displayed along
2624 * with the "Are you sure?" message.
2626 * @package WordPress
2627 * @subpackage Security
2630 * @param string $action The nonce action.
2632 function wp_nonce_ays( $action ) {
2633 $title = __( 'WordPress Failure Notice' );
2634 $html = esc_html( wp_explain_nonce( $action ) );
2635 if ( 'log-out' == $action )
2636 $html .= "</p><p>" . sprintf( __( "Do you really want to <a href='%s'>log out</a>?"), wp_logout_url() );
2637 elseif ( wp_get_referer() )
2638 $html .= "</p><p><a href='" . esc_url( remove_query_arg( 'updated', wp_get_referer() ) ) . "'>" . __( 'Please try again.' ) . "</a>";
2640 wp_die( $html, $title, array('response' => 403) );
2645 * Kill WordPress execution and display HTML message with error message.
2647 * This function complements the die() PHP function. The difference is that
2648 * HTML will be displayed to the user. It is recommended to use this function
2649 * only, when the execution should not continue any further. It is not
2650 * recommended to call this function very often and try to handle as many errors
2651 * as possible siliently.
2655 * @param string $message Error message.
2656 * @param string $title Error title.
2657 * @param string|array $args Optional arguements to control behaviour.
2659 function wp_die( $message, $title = '', $args = array() ) {
2660 if ( function_exists( 'apply_filters' ) ) {
2661 $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler');
2663 $function = '_default_wp_die_handler';
2666 call_user_func( $function, $message, $title, $args );
2670 * Kill WordPress execution and display HTML message with error message.
2672 * This is the default handler for wp_die if you want a custom one for your
2673 * site then you can overload using the wp_die_handler filter in wp_die
2678 * @param string $message Error message.
2679 * @param string $title Error title.
2680 * @param string|array $args Optional arguements to control behaviour.
2682 function _default_wp_die_handler( $message, $title = '', $args = array() ) {
2683 $defaults = array( 'response' => 500 );
2684 $r = wp_parse_args($args, $defaults);
2686 $have_gettext = function_exists('__');
2688 if ( function_exists( 'is_wp_error' ) && is_wp_error( $message ) ) {
2689 if ( empty( $title ) ) {
2690 $error_data = $message->get_error_data();
2691 if ( is_array( $error_data ) && isset( $error_data['title'] ) )
2692 $title = $error_data['title'];
2694 $errors = $message->get_error_messages();
2695 switch ( count( $errors ) ) :
2700 $message = "<p>{$errors[0]}</p>";
2703 $message = "<ul>\n\t\t<li>" . join( "</li>\n\t\t<li>", $errors ) . "</li>\n\t</ul>";
2706 } elseif ( is_string( $message ) ) {
2707 $message = "<p>$message</p>";
2710 if ( isset( $r['back_link'] ) && $r['back_link'] ) {
2711 $back_text = $have_gettext? __('« Back') : '« Back';
2712 $message .= "\n<p><a href='javascript:history.back()'>$back_text</p>";
2715 if ( defined( 'WP_SITEURL' ) && '' != WP_SITEURL )
2716 $admin_dir = WP_SITEURL . '/wp-admin/';
2717 elseif ( function_exists( 'get_bloginfo' ) && '' != get_bloginfo( 'wpurl' ) )
2718 $admin_dir = get_bloginfo( 'wpurl' ) . '/wp-admin/';
2719 elseif ( strpos( $_SERVER['PHP_SELF'], 'wp-admin' ) !== false )
2722 $admin_dir = 'wp-admin/';
2724 if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
2725 if ( !headers_sent() ) {
2726 status_header( $r['response'] );
2728 header( 'Content-Type: text/html; charset=utf-8' );
2731 if ( empty($title) )
2732 $title = $have_gettext ? __('WordPress › Error') : 'WordPress › Error';
2734 $text_direction = 'ltr';
2735 if ( isset($r['text_direction']) && 'rtl' == $r['text_direction'] )
2736 $text_direction = 'rtl';
2737 elseif ( function_exists( 'is_rtl' ) && is_rtl() )
2738 $text_direction = 'rtl';
2740 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2741 <!-- 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 -->
2742 <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
2744 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
2745 <title><?php echo $title ?></title>
2746 <link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install.css" type="text/css" />
2748 if ( 'rtl' == $text_direction ) : ?>
2749 <link rel="stylesheet" href="<?php echo $admin_dir; ?>css/install-rtl.css" type="text/css" />
2752 <body id="error-page">
2754 <?php echo $message; ?>
2762 * Retrieve the WordPress home page URL.
2764 * If the constant named 'WP_HOME' exists, then it willl be used and returned by
2765 * the function. This can be used to counter the redirection on your local
2766 * development environment.
2769 * @package WordPress
2772 * @param string $url URL for the home location
2773 * @return string Homepage location.
2775 function _config_wp_home( $url = '' ) {
2776 if ( defined( 'WP_HOME' ) )
2782 * Retrieve the WordPress site URL.
2784 * If the constant named 'WP_SITEURL' is defined, then the value in that
2785 * constant will always be returned. This can be used for debugging a site on
2786 * your localhost while not having to change the database to your URL.
2789 * @package WordPress
2792 * @param string $url URL to set the WordPress site location.
2793 * @return string The WordPress Site URL
2795 function _config_wp_siteurl( $url = '' ) {
2796 if ( defined( 'WP_SITEURL' ) )
2802 * Set the localized direction for MCE plugin.
2804 * Will only set the direction to 'rtl', if the WordPress locale has the text
2805 * direction set to 'rtl'.
2807 * Fills in the 'directionality', 'plugins', and 'theme_advanced_button1' array
2808 * keys. These keys are then returned in the $input array.
2811 * @package WordPress
2815 * @param array $input MCE plugin array.
2816 * @return array Direction set for 'rtl', if needed by locale.
2818 function _mce_set_direction( $input ) {
2820 $input['directionality'] = 'rtl';
2821 $input['plugins'] .= ',directionality';
2822 $input['theme_advanced_buttons1'] .= ',ltr';
2830 * Convert smiley code to the icon graphic file equivalent.
2832 * You can turn off smilies, by going to the write setting screen and unchecking
2833 * the box, or by setting 'use_smilies' option to false or removing the option.
2835 * Plugins may override the default smiley list by setting the $wpsmiliestrans
2836 * to an array, with the key the code the blogger types in and the value the
2839 * The $wp_smiliessearch global is for the regular expression and is set each
2840 * time the function is called.
2842 * The full list of smilies can be found in the function and won't be listed in
2843 * the description. Probably should create a Codex page for it, so that it is
2846 * @global array $wpsmiliestrans
2847 * @global array $wp_smiliessearch
2850 function smilies_init() {
2851 global $wpsmiliestrans, $wp_smiliessearch;
2853 // don't bother setting up smilies if they are disabled
2854 if ( !get_option( 'use_smilies' ) )
2857 if ( !isset( $wpsmiliestrans ) ) {
2858 $wpsmiliestrans = array(
2859 ':mrgreen:' => 'icon_mrgreen.gif',
2860 ':neutral:' => 'icon_neutral.gif',
2861 ':twisted:' => 'icon_twisted.gif',
2862 ':arrow:' => 'icon_arrow.gif',
2863 ':shock:' => 'icon_eek.gif',
2864 ':smile:' => 'icon_smile.gif',
2865 ':???:' => 'icon_confused.gif',
2866 ':cool:' => 'icon_cool.gif',
2867 ':evil:' => 'icon_evil.gif',
2868 ':grin:' => 'icon_biggrin.gif',
2869 ':idea:' => 'icon_idea.gif',
2870 ':oops:' => 'icon_redface.gif',
2871 ':razz:' => 'icon_razz.gif',
2872 ':roll:' => 'icon_rolleyes.gif',
2873 ':wink:' => 'icon_wink.gif',
2874 ':cry:' => 'icon_cry.gif',
2875 ':eek:' => 'icon_surprised.gif',
2876 ':lol:' => 'icon_lol.gif',
2877 ':mad:' => 'icon_mad.gif',
2878 ':sad:' => 'icon_sad.gif',
2879 '8-)' => 'icon_cool.gif',
2880 '8-O' => 'icon_eek.gif',
2881 ':-(' => 'icon_sad.gif',
2882 ':-)' => 'icon_smile.gif',
2883 ':-?' => 'icon_confused.gif',
2884 ':-D' => 'icon_biggrin.gif',
2885 ':-P' => 'icon_razz.gif',
2886 ':-o' => 'icon_surprised.gif',
2887 ':-x' => 'icon_mad.gif',
2888 ':-|' => 'icon_neutral.gif',
2889 ';-)' => 'icon_wink.gif',
2890 '8)' => 'icon_cool.gif',
2891 '8O' => 'icon_eek.gif',
2892 ':(' => 'icon_sad.gif',
2893 ':)' => 'icon_smile.gif',
2894 ':?' => 'icon_confused.gif',
2895 ':D' => 'icon_biggrin.gif',
2896 ':P' => 'icon_razz.gif',
2897 ':o' => 'icon_surprised.gif',
2898 ':x' => 'icon_mad.gif',
2899 ':|' => 'icon_neutral.gif',
2900 ';)' => 'icon_wink.gif',
2901 ':!:' => 'icon_exclaim.gif',
2902 ':?:' => 'icon_question.gif',
2906 if (count($wpsmiliestrans) == 0) {
2911 * NOTE: we sort the smilies in reverse key order. This is to make sure
2912 * we match the longest possible smilie (:???: vs :?) as the regular
2913 * expression used below is first-match
2915 krsort($wpsmiliestrans);
2917 $wp_smiliessearch = '/(?:\s|^)';
2920 foreach ( (array) $wpsmiliestrans as $smiley => $img ) {
2921 $firstchar = substr($smiley, 0, 1);
2922 $rest = substr($smiley, 1);
2925 if ($firstchar != $subchar) {
2926 if ($subchar != '') {
2927 $wp_smiliessearch .= ')|(?:\s|^)';
2929 $subchar = $firstchar;
2930 $wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';
2932 $wp_smiliessearch .= '|';
2934 $wp_smiliessearch .= preg_quote($rest, '/');
2937 $wp_smiliessearch .= ')(?:\s|$)/m';
2941 * Merge user defined arguments into defaults array.
2943 * This function is used throughout WordPress to allow for both string or array
2944 * to be merged into another array.
2948 * @param string|array $args Value to merge with $defaults
2949 * @param array $defaults Array that serves as the defaults.
2950 * @return array Merged user defined values with defaults.
2952 function wp_parse_args( $args, $defaults = '' ) {
2953 if ( is_object( $args ) )
2954 $r = get_object_vars( $args );
2955 elseif ( is_array( $args ) )
2958 wp_parse_str( $args, $r );
2960 if ( is_array( $defaults ) )
2961 return array_merge( $defaults, $r );
2966 * Clean up an array, comma- or space-separated list of IDs
2970 * @param array|string $list
2971 * @return array Sanitized array of IDs
2973 function wp_parse_id_list( $list ) {
2974 if ( !is_array($list) )
2975 $list = preg_split('/[\s,]+/', $list);
2977 return array_unique(array_map('absint', $list));
2981 * Filters a list of objects, based on a set of key => value arguments
2985 * @param array $list An array of objects to filter
2986 * @param array $args An array of key => value arguments to match against each object
2987 * @param string $operator The logical operation to perform. 'or' means only one element
2988 * from the array needs to match; 'and' means all elements must match. The default is 'and'.
2989 * @param bool|string $field A field from the object to place instead of the entire object
2990 * @return array A list of objects or object fields
2992 function wp_filter_object_list( $list, $args = array(), $operator = 'and', $field = false ) {
2993 if ( !is_array($list) )
2999 if ( empty($args) && !$field )
3000 return $list; // nothing to do
3002 $count = count($args);
3004 $filtered = array();
3006 foreach ( $list as $key => $obj ) {
3007 $matched = count(array_intersect_assoc(get_object_vars($obj), $args));
3008 if ( ('and' == $operator && $matched == $count) || ('or' == $operator && $matched <= $count) ) {
3010 $filtered[] = $obj->$field;
3012 $filtered[$key] = $obj;
3020 * Determines if default embed handlers should be loaded.
3022 * Checks to make sure that the embeds library hasn't already been loaded. If
3023 * it hasn't, then it will load the embeds library.
3027 function wp_maybe_load_embeds() {
3028 if ( ! apply_filters('load_default_embeds', true) )
3030 require_once( ABSPATH . WPINC . '/default-embeds.php' );
3034 * Determines if Widgets library should be loaded.
3036 * Checks to make sure that the widgets library hasn't already been loaded. If
3037 * it hasn't, then it will load the widgets library and run an action hook.
3040 * @uses add_action() Calls '_admin_menu' hook with 'wp_widgets_add_menu' value.
3042 function wp_maybe_load_widgets() {
3043 if ( ! apply_filters('load_default_widgets', true) )
3045 require_once( ABSPATH . WPINC . '/default-widgets.php' );
3046 add_action( '_admin_menu', 'wp_widgets_add_menu' );
3050 * Append the Widgets menu to the themes main menu.
3053 * @uses $submenu The administration submenu list.
3055 function wp_widgets_add_menu() {
3057 $submenu['themes.php'][7] = array( __( 'Widgets' ), 'edit_theme_options', 'widgets.php' );
3058 ksort( $submenu['themes.php'], SORT_NUMERIC );
3062 * Flush all output buffers for PHP 5.2.
3064 * Make sure all output buffers are flushed before our singletons our destroyed.
3068 function wp_ob_end_flush_all() {
3069 $levels = ob_get_level();
3070 for ($i=0; $i<$levels; $i++)
3075 * Load the correct database class file.
3077 * This function is used to load the database class file either at runtime or by
3078 * wp-admin/setup-config.php We must globalise $wpdb to ensure that it is
3079 * defined globally by the inline code in wp-db.php.
3082 * @global $wpdb WordPress Database Object
3084 function require_wp_db() {
3086 if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
3087 require_once( WP_CONTENT_DIR . '/db.php' );
3089 require_once( ABSPATH . WPINC . '/wp-db.php' );
3093 * Load custom DB error or display WordPress DB error.
3095 * If a file exists in the wp-content directory named db-error.php, then it will
3096 * be loaded instead of displaying the WordPress DB error. If it is not found,
3097 * then the WordPress DB error will be displayed instead.
3099 * The WordPress DB error sets the HTTP status header to 500 to try to prevent
3100 * search engines from caching the message. Custom DB messages should do the
3103 * This function was backported to the the WordPress 2.3.2, but originally was
3104 * added in WordPress 2.5.0.
3109 function dead_db() {
3112 // Load custom DB error template, if present.
3113 if ( file_exists( WP_CONTENT_DIR . '/db-error.php' ) ) {
3114 require_once( WP_CONTENT_DIR . '/db-error.php' );
3118 // If installing or in the admin, provide the verbose message.
3119 if ( defined('WP_INSTALLING') || defined('WP_ADMIN') )
3120 wp_die($wpdb->error);
3122 // Otherwise, be terse.
3123 status_header( 500 );
3125 header( 'Content-Type: text/html; charset=utf-8' );
3127 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
3128 <html xmlns="http://www.w3.org/1999/xhtml" <?php if ( function_exists( 'language_attributes' ) ) language_attributes(); ?>>
3130 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
3131 <title>Database Error</title>
3135 <h1>Error establishing a database connection</h1>
3143 * Converts value to nonnegative integer.
3147 * @param mixed $maybeint Data you wish to have convered to an nonnegative integer
3148 * @return int An nonnegative integer
3150 function absint( $maybeint ) {
3151 return abs( intval( $maybeint ) );
3155 * Determines if the blog can be accessed over SSL.
3157 * Determines if blog can be accessed over SSL by using cURL to access the site
3158 * using the https in the siteurl. Requires cURL extension to work correctly.
3162 * @param string $url
3163 * @return bool Whether SSL access is available
3165 function url_is_accessable_via_ssl($url)
3167 if (in_array('curl', get_loaded_extensions())) {
3168 $ssl = preg_replace( '/^http:\/\//', 'https://', $url );
3171 curl_setopt($ch, CURLOPT_URL, $ssl);
3172 curl_setopt($ch, CURLOPT_FAILONERROR, true);
3173 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
3174 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
3175 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
3179 $status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
3182 if ($status == 200 || $status == 401) {
3190 * Secure URL, if available or the given URL.
3194 * @param string $url Complete URL path with transport.
3195 * @return string Secure or regular URL path.
3197 function atom_service_url_filter($url)
3199 if ( url_is_accessable_via_ssl($url) )
3200 return preg_replace( '/^http:\/\//', 'https://', $url );
3206 * Marks a function as deprecated and informs when it has been used.
3208 * There is a hook deprecated_function_run that will be called that can be used
3209 * to get the backtrace up to what file and function called the deprecated
3212 * The current behavior is to trigger an user error if WP_DEBUG is true.
3214 * This function is to be used in every function in depreceated.php
3216 * @package WordPress
3221 * @uses do_action() Calls 'deprecated_function_run' and passes the function name, what to use instead,
3222 * and the version the function was deprecated in.
3223 * @uses apply_filters() Calls 'deprecated_function_trigger_error' and expects boolean value of true to do
3224 * trigger or false to not trigger error.
3226 * @param string $function The function that was called
3227 * @param string $version The version of WordPress that deprecated the function
3228 * @param string $replacement Optional. The function that should have been called
3230 function _deprecated_function( $function, $version, $replacement=null ) {
3232 do_action( 'deprecated_function_run', $function, $replacement, $version );
3234 // Allow plugin to filter the output error trigger
3235 if ( WP_DEBUG && apply_filters( 'deprecated_function_trigger_error', true ) ) {
3236 if ( ! is_null($replacement) )
3237 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $function, $version, $replacement ) );
3239 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
3244 * Marks a file as deprecated and informs when it has been used.
3246 * There is a hook deprecated_file_included that will be called that can be used
3247 * to get the backtrace up to what file and function included the deprecated
3250 * The current behavior is to trigger an user error if WP_DEBUG is true.
3252 * This function is to be used in every file that is depreceated
3254 * @package WordPress
3259 * @uses do_action() Calls 'deprecated_file_included' and passes the file name, what to use instead,
3260 * the version in which the file was deprecated, and any message regarding the change.
3261 * @uses apply_filters() Calls 'deprecated_file_trigger_error' and expects boolean value of true to do
3262 * trigger or false to not trigger error.
3264 * @param string $file The file that was included
3265 * @param string $version The version of WordPress that deprecated the file
3266 * @param string $replacement Optional. The file that should have been included based on ABSPATH
3267 * @param string $message Optional. A message regarding the change
3269 function _deprecated_file( $file, $version, $replacement = null, $message = '' ) {
3271 do_action( 'deprecated_file_included', $file, $replacement, $version, $message );
3273 // Allow plugin to filter the output error trigger
3274 if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) {
3275 $message = empty( $message ) ? '' : ' ' . $message;
3276 if ( ! is_null( $replacement ) )
3277 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.'), $file, $version, $replacement ) . $message );
3279 trigger_error( sprintf( __('%1$s is <strong>deprecated</strong> since version %2$s with no alternative available.'), $file, $version ) . $message );
3283 * Marks a function argument as deprecated and informs when it has been used.
3285 * This function is to be used whenever a deprecated function argument is used.
3286 * Before this function is called, the argument must be checked for whether it was
3287 * used by comparing it to its default value or evaluating whether it is empty.
3290 * if ( !empty($deprecated) )
3291 * _deprecated_argument( __FUNCTION__, '3.0' );
3294 * There is a hook deprecated_argument_run that will be called that can be used
3295 * to get the backtrace up to what file and function used the deprecated
3298 * The current behavior is to trigger an user error if WP_DEBUG is true.
3300 * @package WordPress
3305 * @uses do_action() Calls 'deprecated_argument_run' and passes the function name, a message on the change,
3306 * and the version in which the argument was deprecated.
3307 * @uses apply_filters() Calls 'deprecated_argument_trigger_error' and expects boolean value of true to do
3308 * trigger or false to not trigger error.
3310 * @param string $function The function that was called
3311 * @param string $version The version of WordPress that deprecated the argument used
3312 * @param string $message Optional. A message regarding the change.
3314 function _deprecated_argument( $function, $version, $message = null ) {
3316 do_action( 'deprecated_argument_run', $function, $message, $version );
3318 // Allow plugin to filter the output error trigger
3319 if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) {
3320 if ( ! is_null( $message ) )
3321 trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s'), $function, $version, $message ) );
3323 trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) );
3328 * Is the server running earlier than 1.5.0 version of lighttpd
3332 * @return bool Whether the server is running lighttpd < 1.5.0
3334 function is_lighttpd_before_150() {
3335 $server_parts = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] )? $_SERVER['SERVER_SOFTWARE'] : '' );
3336 $server_parts[1] = isset( $server_parts[1] )? $server_parts[1] : '';
3337 return 'lighttpd' == $server_parts[0] && -1 == version_compare( $server_parts[1], '1.5.0' );
3341 * Does the specified module exist in the apache config?
3345 * @param string $mod e.g. mod_rewrite
3346 * @param bool $default The default return value if the module is not found
3349 function apache_mod_loaded($mod, $default = false) {
3355 if ( function_exists('apache_get_modules') ) {
3356 $mods = apache_get_modules();
3357 if ( in_array($mod, $mods) )
3359 } elseif ( function_exists('phpinfo') ) {
3362 $phpinfo = ob_get_clean();
3363 if ( false !== strpos($phpinfo, $mod) )
3370 * File validates against allowed set of defined rules.
3372 * A return value of '1' means that the $file contains either '..' or './'. A
3373 * return value of '2' means that the $file contains ':' after the first
3374 * character. A return value of '3' means that the file is not in the allowed
3379 * @param string $file File path.
3380 * @param array $allowed_files List of allowed files.
3381 * @return int 0 means nothing is wrong, greater than 0 means something was wrong.
3383 function validate_file( $file, $allowed_files = '' ) {
3384 if ( false !== strpos( $file, '..' ))
3387 if ( false !== strpos( $file, './' ))
3390 if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) )
3393 if (':' == substr( $file, 1, 1 ))
3400 * Determine if SSL is used.
3404 * @return bool True if SSL, false if not used.
3407 if ( isset($_SERVER['HTTPS']) ) {
3408 if ( 'on' == strtolower($_SERVER['HTTPS']) )
3410 if ( '1' == $_SERVER['HTTPS'] )
3412 } elseif ( isset($_SERVER['SERVER_PORT']) && ( '443' == $_SERVER['SERVER_PORT'] ) ) {
3419 * Whether SSL login should be forced.
3423 * @param string|bool $force Optional.
3424 * @return bool True if forced, false if not forced.
3426 function force_ssl_login( $force = null ) {
3427 static $forced = false;
3429 if ( !is_null( $force ) ) {
3430 $old_forced = $forced;
3439 * Whether to force SSL used for the Administration Panels.
3443 * @param string|bool $force
3444 * @return bool True if forced, false if not forced.
3446 function force_ssl_admin( $force = null ) {
3447 static $forced = false;
3449 if ( !is_null( $force ) ) {
3450 $old_forced = $forced;
3459 * Guess the URL for the site.
3461 * Will remove wp-admin links to retrieve only return URLs not in the wp-admin
3468 function wp_guess_url() {
3469 if ( defined('WP_SITEURL') && '' != WP_SITEURL ) {
3472 $schema = is_ssl() ? 'https://' : 'http://';
3473 $url = preg_replace('|/wp-admin/.*|i', '', $schema . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
3479 * Suspend cache invalidation.
3481 * Turns cache invalidation on and off. Useful during imports where you don't wont to do invalidations
3482 * every time a post is inserted. Callers must be sure that what they are doing won't lead to an inconsistent
3483 * cache when invalidation is suspended.
3487 * @param bool $suspend Whether to suspend or enable cache invalidation
3488 * @return bool The current suspend setting
3490 function wp_suspend_cache_invalidation($suspend = true) {
3491 global $_wp_suspend_cache_invalidation;
3493 $current_suspend = $_wp_suspend_cache_invalidation;
3494 $_wp_suspend_cache_invalidation = $suspend;
3495 return $current_suspend;
3499 * Retrieve site option value based on name of option.
3502 * @package WordPress
3503 * @subpackage Option
3506 * @uses apply_filters() Calls 'pre_site_option_$option' before checking the option.
3507 * Any value other than false will "short-circuit" the retrieval of the option
3508 * and return the returned value.
3509 * @uses apply_filters() Calls 'site_option_$option', after checking the option, with
3512 * @param string $option Name of option to retrieve. Expected to not be SQL-escaped.
3513 * @param mixed $default Optional value to return if option doesn't exist. Default false.
3514 * @param bool $use_cache Whether to use cache. Multisite only. Default true.
3515 * @return mixed Value set for the option.
3517 function get_site_option( $option, $default = false, $use_cache = true ) {
3520 // Allow plugins to short-circuit site options.
3521 $pre = apply_filters( 'pre_site_option_' . $option, false );
3522 if ( false !== $pre )
3525 if ( !is_multisite() ) {
3526 $value = get_option($option, $default);
3528 $cache_key = "{$wpdb->siteid}:$option";
3530 $value = wp_cache_get($cache_key, 'site-options');
3532 if ( !isset($value) || (false === $value) ) {
3533 $row = $wpdb->get_row( $wpdb->prepare("SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) );
3535 // Has to be get_row instead of get_var because of funkiness with 0, false, null values
3536 if ( is_object( $row ) )
3537 $value = $row->meta_value;
3541 $value = maybe_unserialize( $value );
3543 wp_cache_set( $cache_key, $value, 'site-options' );
3547 return apply_filters( 'site_option_' . $option, $value );
3551 * Add a new site option.
3554 * @package WordPress
3555 * @subpackage Option
3558 * @uses apply_filters() Calls 'pre_add_site_option_$option' hook to allow overwriting the
3559 * option value to be stored.
3560 * @uses do_action() Calls 'add_site_option_$option' and 'add_site_option' hooks on success.
3562 * @param string $option Name of option to add. Expected to not be SQL-escaped.
3563 * @param mixed $value Optional. Option value, can be anything. Expected to not be SQL-escaped.
3564 * @return bool False if option was not added and true if option was added.
3566 function add_site_option( $option, $value ) {
3569 $value = apply_filters( 'pre_add_site_option_' . $option, $value );
3571 if ( !is_multisite() ) {
3572 $result = add_option( $option, $value );
3574 $cache_key = "{$wpdb->siteid}:$option";
3576 if ( $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) )
3577 return update_site_option( $option, $value );
3579 $value = sanitize_option( $option, $value );
3580 wp_cache_set( $cache_key, $value, 'site-options' );
3583 $value = maybe_serialize($value);
3584 $result = $wpdb->insert( $wpdb->sitemeta, array('site_id' => $wpdb->siteid, 'meta_key' => $option, 'meta_value' => $value ) );
3588 do_action( "add_site_option_{$option}", $option, $value );
3589 do_action( "add_site_option", $option, $value );
3595 * Removes site option by name.
3597 * @see delete_option()
3598 * @package WordPress
3599 * @subpackage Option
3602 * @uses do_action() Calls 'pre_delete_site_option_$option' hook before option is deleted.
3603 * @uses do_action() Calls 'delete_site_option' and 'delete_site_option_$option'
3606 * @param string $option Name of option to remove. Expected to not be SQL-escaped.
3607 * @return bool True, if succeed. False, if failure.
3609 function delete_site_option( $option ) {
3612 // ms_protect_special_option( $option ); @todo
3614 do_action( 'pre_delete_site_option_' . $option );
3616 if ( !is_multisite() ) {
3617 $result = delete_option( $option );
3619 $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) );
3620 if ( is_null( $row ) || !$row->meta_id )
3622 $cache_key = "{$wpdb->siteid}:$option";
3623 wp_cache_delete( $cache_key, 'site-options' );
3625 $result = $wpdb->query( $wpdb->prepare( "DELETE FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) );
3629 do_action( "delete_site_option_{$option}", $option );
3630 do_action( "delete_site_option", $option );
3637 * Update the value of a site option that was already added.
3639 * @see update_option()
3641 * @package WordPress
3642 * @subpackage Option
3644 * @uses apply_filters() Calls 'pre_update_site_option_$option' hook to allow overwriting the
3645 * option value to be stored.
3646 * @uses do_action() Calls 'update_site_option_$option' and 'update_site_option' hooks on success.
3648 * @param string $option Name of option. Expected to not be SQL-escaped.
3649 * @param mixed $value Option value. Expected to not be SQL-escaped.
3650 * @return bool False if value was not updated and true if value was updated.
3652 function update_site_option( $option, $value ) {
3655 $oldvalue = get_site_option( $option );
3656 $value = apply_filters( 'pre_update_site_option_' . $option, $value, $oldvalue );
3658 if ( $value === $oldvalue )
3661 if ( !is_multisite() ) {
3662 $result = update_option( $option, $value );
3664 $cache_key = "{$wpdb->siteid}:$option";
3666 if ( $value && !$wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $wpdb->siteid ) ) )
3667 return add_site_option( $option, $value );
3668 $value = sanitize_option( $option, $value );
3669 wp_cache_set( $cache_key, $value, 'site-options' );
3672 $value = maybe_serialize( $value );
3673 $result = $wpdb->update( $wpdb->sitemeta, array( 'meta_value' => $value ), array( 'site_id' => $wpdb->siteid, 'meta_key' => $option ) );
3678 do_action( "update_site_option_{$option}", $option, $value );
3679 do_action( "update_site_option", $option, $value );
3686 * Delete a site transient
3689 * @package WordPress
3690 * @subpackage Transient
3692 * @uses do_action() Calls 'delete_site_transient_$transient' hook before transient is deleted.
3693 * @uses do_action() Calls 'deleted_site_transient' hook on success.
3695 * @param string $transient Transient name. Expected to not be SQL-escaped.
3696 * @return bool True if successful, false otherwise
3698 function delete_site_transient( $transient ) {
3699 global $_wp_using_ext_object_cache;
3701 do_action( 'delete_site_transient_' . $transient, $transient );
3702 if ( $_wp_using_ext_object_cache ) {
3703 $result = wp_cache_delete( $transient, 'site-transient' );
3705 $option_timeout = '_site_transient_timeout_' . $transient;
3706 $option = '_site_transient_' . $transient;
3707 $result = delete_site_option( $option );
3709 delete_site_option( $option_timeout );
3712 do_action( 'deleted_site_transient', $transient );
3717 * Get the value of a site transient
3719 * If the transient does not exist or does not have a value, then the return value
3722 * @see get_transient()
3724 * @package WordPress
3725 * @subpackage Transient
3727 * @uses apply_filters() Calls 'pre_site_transient_$transient' hook before checking the transient.
3728 * Any value other than false will "short-circuit" the retrieval of the transient
3729 * and return the returned value.
3730 * @uses apply_filters() Calls 'site_transient_$option' hook, after checking the transient, with
3731 * the transient value.
3733 * @param string $transient Transient name. Expected to not be SQL-escaped.
3734 * @return mixed Value of transient
3736 function get_site_transient( $transient ) {
3737 global $_wp_using_ext_object_cache;
3739 $pre = apply_filters( 'pre_site_transient_' . $transient, false );
3740 if ( false !== $pre )
3743 if ( $_wp_using_ext_object_cache ) {
3744 $value = wp_cache_get( $transient, 'site-transient' );
3746 // Core transients that do not have a timeout. Listed here so querying timeouts can be avoided.
3747 $no_timeout = array('update_core', 'update_plugins', 'update_themes');
3748 $transient_option = '_site_transient_' . $transient;
3749 if ( ! in_array( $transient, $no_timeout ) ) {
3750 $transient_timeout = '_site_transient_timeout_' . $transient;
3751 $timeout = get_site_option( $transient_timeout );
3752 if ( false !== $timeout && $timeout < time() ) {
3753 delete_site_option( $transient_option );
3754 delete_site_option( $transient_timeout );
3759 $value = get_site_option( $transient_option );
3762 return apply_filters( 'site_transient_' . $transient, $value );
3766 * Set/update the value of a site transient
3768 * You do not need to serialize values, if the value needs to be serialize, then
3769 * it will be serialized before it is set.
3771 * @see set_transient()
3773 * @package WordPress
3774 * @subpackage Transient
3776 * @uses apply_filters() Calls 'pre_set_site_transient_$transient' hook to allow overwriting the
3777 * transient value to be stored.
3778 * @uses do_action() Calls 'set_site_transient_$transient' and 'setted_site_transient' hooks on success.
3780 * @param string $transient Transient name. Expected to not be SQL-escaped.
3781 * @param mixed $value Transient value. Expected to not be SQL-escaped.
3782 * @param int $expiration Time until expiration in seconds, default 0
3783 * @return bool False if value was not set and true if value was set.
3785 function set_site_transient( $transient, $value, $expiration = 0 ) {
3786 global $_wp_using_ext_object_cache;
3788 $value = apply_filters( 'pre_set_site_transient_' . $transient, $value );
3790 if ( $_wp_using_ext_object_cache ) {
3791 $result = wp_cache_set( $transient, $value, 'site-transient', $expiration );
3793 $transient_timeout = '_site_transient_timeout_' . $transient;
3794 $transient = '_site_transient_' . $transient;
3795 if ( false === get_site_option( $transient ) ) {
3797 add_site_option( $transient_timeout, time() + $expiration );
3798 $result = add_site_option( $transient, $value );
3801 update_site_option( $transient_timeout, time() + $expiration );
3802 $result = update_site_option( $transient, $value );
3806 do_action( 'set_site_transient_' . $transient );
3807 do_action( 'setted_site_transient', $transient );