File Content: option.php <?php /** * Option API * * @package WordPress * @subpackage Option */ /** * Retrieves an option value based on an option name. * * If the option does not exist, and a default value is not provided, * boolean false is returned. This could be used to check whether you need * to initialize an option during installation of a plugin, however that * can be done better by using add_option() which will not overwrite * existing options. * * Not initializing an option and using boolean `false` as a return value * is a bad practice as it triggers an additional database query. * * The type of the returned value can be different from the type that was passed * when saving or updating the option. If the option value was serialized, * then it will be unserialized when it is returned. In this case the type will * be the same. For example, storing a non-scalar value like an array will * return the same array. * * In most cases non-string scalar and null values will be converted and returned * as string equivalents. * * Exceptions: * 1. When the option has not been saved in the database, the `$default` value * is returned if provided. If not, boolean `false` is returned. * 2. When one of the Options API filters is used: {@see 'pre_option_{$option}'}, * {@see 'default_option_{$option}'}, or {@see 'option_{$option}'}, the returned * value may not match the expected type. * 3. When the option has just been saved in the database, and get_option() * is used right after, non-string scalar and null values are not converted to * string equivalents and the original type is returned. * * Examples: * * When adding options like this: `add_option( 'my_option_name', 'value' );` * and then retrieving them with `get_option( 'my_option_name' );`, the returned * values will be: * * `false` returns `string(0) ""` * `true` returns `string(1) "1"` * `0` returns `string(1) "0"` * `1` returns `string(1) "1"` * `'0'` returns `string(1) "0"` * `'1'` returns `string(1) "1"` * `null` returns `string(0) ""` * * When adding options with non-scalar values like * `add_option( 'my_array', array( false, 'str', null ) );`, the returned value * will be identical to the original as it is serialized before saving * it in the database: * * array(3) { * [0] => bool(false) * [1] => string(3) "str" * [2] => NULL * } * * @since 1.5.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $option Name of the option to retrieve. Expected to not be SQL-escaped. * @param mixed $default Optional. Default value to return if the option does not exist. * @return mixed Value of the option. A value of any type may be returned, including * scalar (string, boolean, float, integer), null, array, object. * Scalar and null values will be returned as strings as long as they originate * from a database stored option value. If there is no option in the database, * boolean `false` is returned. */ function get_option( $option, $default = false ) { global $wpdb; if ( is_scalar( $option ) ) { $option = trim( $option ); } if ( empty( $option ) ) { return false; } /* * Until a proper _deprecated_option() function can be introduced, * redirect requests to deprecated keys to the new, correct ones. */ $deprecated_keys = array( 'blacklist_keys' => 'disallowed_keys', 'comment_whitelist' => 'comment_previously_approved', ); if ( ! wp_installing() && isset( $deprecated_keys[ $option ] ) ) { _deprecated_argument( __FUNCTION__, '5.5.0', sprintf( /* translators: 1: Deprecated option key, 2: New option key. */ __( 'The "%1$s" option key has been renamed to "%2$s".' ), $option, $deprecated_keys[ $option ] ) ); return get_option( $deprecated_keys[ $option ], $default ); } /** * Filters the value of an existing option before it is retrieved. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * Returning a truthy value from the filter will effectively short-circuit retrieval * and return the passed value instead. * * @since 1.5.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.9.0 The `$default` parameter was added. * * @param mixed $pre_option The value to return instead of the option value. This differs * from `$default`, which is used as the fallback value in the event * the option doesn't exist elsewhere in get_option(). * Default false (to skip past the short-circuit). * @param string $option Option name. * @param mixed $default The fallback value to return if the option does not exist. * Default false. */ $pre = apply_filters( "pre_option_{$option}", false, $option, $default ); if ( false !== $pre ) { return $pre; } if ( defined( 'WP_SETUP_CONFIG' ) ) { return false; } // Distinguish between `false` as a default, and not passing one. $passed_default = func_num_args() > 1; if ( ! wp_installing() ) { // Prevent non-existent options from triggering multiple queries. $notoptions = wp_cache_get( 'notoptions', 'options' ); if ( isset( $notoptions[ $option ] ) ) { /** * Filters the default value for an option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 3.4.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$passed_default` parameter was added to distinguish between a `false` value and the default parameter value. * * @param mixed $default The default value to return if the option does not exist * in the database. * @param string $option Option name. * @param bool $passed_default Was `get_option()` passed a default value? */ return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); } $alloptions = wp_load_alloptions(); if ( isset( $alloptions[ $option ] ) ) { $value = $alloptions[ $option ]; } else { $value = wp_cache_get( $option, 'options' ); if ( false === $value ) { $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); // Has to be get_row() instead of get_var() because of funkiness with 0, false, null values. if ( is_object( $row ) ) { $value = $row->option_value; wp_cache_add( $option, $value, 'options' ); } else { // Option does not exist, so we must cache its non-existence. if ( ! is_array( $notoptions ) ) { $notoptions = array(); } $notoptions[ $option ] = true; wp_cache_set( 'notoptions', $notoptions, 'options' ); /** This filter is documented in wp-includes/option.php */ return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); } } } } else { $suppress = $wpdb->suppress_errors(); $row = $wpdb->get_row( $wpdb->prepare( "SELECT option_value FROM $wpdb->options WHERE option_name = %s LIMIT 1", $option ) ); $wpdb->suppress_errors( $suppress ); if ( is_object( $row ) ) { $value = $row->option_value; } else { /** This filter is documented in wp-includes/option.php */ return apply_filters( "default_option_{$option}", $default, $option, $passed_default ); } } // If home is not set, use siteurl. if ( 'home' === $option && '' === $value ) { return get_option( 'siteurl' ); } if ( in_array( $option, array( 'siteurl', 'home', 'category_base', 'tag_base' ), true ) ) { $value = untrailingslashit( $value ); } /** * Filters the value of an existing option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 1.5.0 As 'option_' . $setting * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * * @param mixed $value Value of the option. If stored serialized, it will be * unserialized prior to being returned. * @param string $option Option name. */ return apply_filters( "option_{$option}", maybe_unserialize( $value ), $option ); } /** * Protects WordPress special option from being modified. * * Will die if $option is in protected list. Protected options are 'alloptions' * and 'notoptions' options. * * @since 2.2.0 * * @param string $option Option name. */ function wp_protect_special_option( $option ) { if ( 'alloptions' === $option || 'notoptions' === $option ) { wp_die( sprintf( /* translators: %s: Option name. */ __( '%s is a protected WP option and may not be modified' ), esc_html( $option ) ) ); } } /** * Prints option value after sanitizing for forms. * * @since 1.5.0 * * @param string $option Option name. */ function form_option( $option ) { echo esc_attr( get_option( $option ) ); } /** * Loads and caches all autoloaded options, if available or all options. * * @since 2.2.0 * @since 5.3.1 The `$force_cache` parameter was added. * * @global wpdb $wpdb WordPress database abstraction object. * * @param bool $force_cache Optional. Whether to force an update of the local cache * from the persistent cache. Default false. * @return array List of all options. */ function wp_load_alloptions( $force_cache = false ) { global $wpdb; if ( ! wp_installing() || ! is_multisite() ) { $alloptions = wp_cache_get( 'alloptions', 'options', $force_cache ); } else { $alloptions = false; } if ( ! $alloptions ) { $suppress = $wpdb->suppress_errors(); $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE autoload = 'yes'" ); if ( ! $alloptions_db ) { $alloptions_db = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options" ); } $wpdb->suppress_errors( $suppress ); $alloptions = array(); foreach ( (array) $alloptions_db as $o ) { $alloptions[ $o->option_name ] = $o->option_value; } if ( ! wp_installing() || ! is_multisite() ) { /** * Filters all options before caching them. * * @since 4.9.0 * * @param array $alloptions Array with all options. */ $alloptions = apply_filters( 'pre_cache_alloptions', $alloptions ); wp_cache_add( 'alloptions', $alloptions, 'options' ); } } /** * Filters all options after retrieving them. * * @since 4.9.0 * * @param array $alloptions Array with all options. */ return apply_filters( 'alloptions', $alloptions ); } /** * Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used. * * @since 3.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id Optional site ID for which to query the options. Defaults to the current site. */ function wp_load_core_site_options( $network_id = null ) { global $wpdb; if ( ! is_multisite() || wp_using_ext_object_cache() || wp_installing() ) { return; } if ( empty( $network_id ) ) { $network_id = get_current_network_id(); } $core_options = array( 'site_name', 'siteurl', 'active_sitewide_plugins', '_site_transient_timeout_theme_roots', '_site_transient_theme_roots', 'site_admins', 'can_compress_scripts', 'global_terms_enabled', 'ms_files_rewriting' ); $core_options_in = "'" . implode( "', '", $core_options ) . "'"; $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", $network_id ) ); foreach ( $options as $option ) { $key = $option->meta_key; $cache_key = "{$network_id}:$key"; $option->meta_value = maybe_unserialize( $option->meta_value ); wp_cache_set( $cache_key, $option->meta_value, 'site-options' ); } } /** * Updates the value of an option that was already added. * * You do not need to serialize values. If the value needs to be serialized, * then it will be serialized before it is inserted into the database. * Remember, resources cannot be serialized or added as an option. * * If the option does not exist, it will be created. * This function is designed to work with or without a logged-in user. In terms of security, * plugin developers should check the current user's capabilities before updating any options. * * @since 1.0.0 * @since 4.2.0 The `$autoload` parameter was added. * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $option Name of the option to update. Expected to not be SQL-escaped. * @param mixed $value Option value. Must be serializable if non-scalar. Expected to not be SQL-escaped. * @param string|bool $autoload Optional. Whether to load the option when WordPress starts up. For existing options, * `$autoload` can only be updated using `update_option()` if `$value` is also changed. * Accepts 'yes'|true to enable or 'no'|false to disable. For non-existent options, * the default value is 'yes'. Default null. * @return bool True if the value was updated, false otherwise. */ function update_option( $option, $value, $autoload = null ) { global $wpdb; if ( is_scalar( $option ) ) { $option = trim( $option ); } if ( empty( $option ) ) { return false; } /* * Until a proper _deprecated_option() function can be introduced, * redirect requests to deprecated keys to the new, correct ones. */ $deprecated_keys = array( 'blacklist_keys' => 'disallowed_keys', 'comment_whitelist' => 'comment_previously_approved', ); if ( ! wp_installing() && isset( $deprecated_keys[ $option ] ) ) { _deprecated_argument( __FUNCTION__, '5.5.0', sprintf( /* translators: 1: Deprecated option key, 2: New option key. */ __( 'The "%1$s" option key has been renamed to "%2$s".' ), $option, $deprecated_keys[ $option ] ) ); return update_option( $deprecated_keys[ $option ], $value, $autoload ); } wp_protect_special_option( $option ); if ( is_object( $value ) ) { $value = clone $value; } $value = sanitize_option( $option, $value ); $old_value = get_option( $option ); /** * Filters a specific option before its value is (maybe) serialized and updated. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.6.0 * @since 4.4.0 The `$option` parameter was added. * * @param mixed $value The new, unserialized option value. * @param mixed $old_value The old option value. * @param string $option Option name. */ $value = apply_filters( "pre_update_option_{$option}", $value, $old_value, $option ); /** * Filters an option before its value is (maybe) serialized and updated. * * @since 3.9.0 * * @param mixed $value The new, unserialized option value. * @param string $option Name of the option. * @param mixed $old_value The old option value. */ $value = apply_filters( 'pre_update_option', $value, $option, $old_value ); /* * If the new and old values are the same, no need to update. * * Unserialized values will be adequate in most cases. If the unserialized * data differs, the (maybe) serialized data is checked to avoid * unnecessary database calls for otherwise identical object instances. * * See https://core.trac.wordpress.org/ticket/38903 */ if ( $value === $old_value || maybe_serialize( $value ) === maybe_serialize( $old_value ) ) { return false; } /** This filter is documented in wp-includes/option.php */ if ( apply_filters( "default_option_{$option}", false, $option, false ) === $old_value ) { // Default setting for new options is 'yes'. if ( null === $autoload ) { $autoload = 'yes'; } return add_option( $option, $value, '', $autoload ); } $serialized_value = maybe_serialize( $value ); /** * Fires immediately before an option value is updated. * * @since 2.9.0 * * @param string $option Name of the option to update. * @param mixed $old_value The old option value. * @param mixed $value The new option value. */ do_action( 'update_option', $option, $old_value, $value ); $update_args = array( 'option_value' => $serialized_value, ); if ( null !== $autoload ) { $update_args['autoload'] = ( 'no' === $autoload || false === $autoload ) ? 'no' : 'yes'; } $result = $wpdb->update( $wpdb->options, $update_args, array( 'option_name' => $option ) ); if ( ! $result ) { return false; } $notoptions = wp_cache_get( 'notoptions', 'options' ); if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { unset( $notoptions[ $option ] ); wp_cache_set( 'notoptions', $notoptions, 'options' ); } if ( ! wp_installing() ) { $alloptions = wp_load_alloptions( true ); if ( isset( $alloptions[ $option ] ) ) { $alloptions[ $option ] = $serialized_value; wp_cache_set( 'alloptions', $alloptions, 'options' ); } else { wp_cache_set( $option, $serialized_value, 'options' ); } } /** * Fires after the value of a specific option has been successfully updated. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.0.1 * @since 4.4.0 The `$option` parameter was added. * * @param mixed $old_value The old option value. * @param mixed $value The new option value. * @param string $option Option name. */ do_action( "update_option_{$option}", $old_value, $value, $option ); /** * Fires after the value of an option has been successfully updated. * * @since 2.9.0 * * @param string $option Name of the updated option. * @param mixed $old_value The old option value. * @param mixed $value The new option value. */ do_action( 'updated_option', $option, $old_value, $value ); return true; } /** * Adds a new option. * * You do not need to serialize values. If the value needs to be serialized, * then it will be serialized before it is inserted into the database. * Remember, resources cannot be serialized or added as an option. * * You can create options without values and then update the values later. * Existing options will not be updated and checks are performed to ensure that you * aren't adding a protected WordPress option. Care should be taken to not name * options the same as the ones which are protected. * * @since 1.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $option Name of the option to add. Expected to not be SQL-escaped. * @param mixed $value Optional. Option value. Must be serializable if non-scalar. * Expected to not be SQL-escaped. * @param string $deprecated Optional. Description. Not used anymore. * @param string|bool $autoload Optional. Whether to load the option when WordPress starts up. * Default is enabled. Accepts 'no' to disable for legacy reasons. * @return bool True if the option was added, false otherwise. */ function add_option( $option, $value = '', $deprecated = '', $autoload = 'yes' ) { global $wpdb; if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, '2.3.0' ); } if ( is_scalar( $option ) ) { $option = trim( $option ); } if ( empty( $option ) ) { return false; } /* * Until a proper _deprecated_option() function can be introduced, * redirect requests to deprecated keys to the new, correct ones. */ $deprecated_keys = array( 'blacklist_keys' => 'disallowed_keys', 'comment_whitelist' => 'comment_previously_approved', ); if ( ! wp_installing() && isset( $deprecated_keys[ $option ] ) ) { _deprecated_argument( __FUNCTION__, '5.5.0', sprintf( /* translators: 1: Deprecated option key, 2: New option key. */ __( 'The "%1$s" option key has been renamed to "%2$s".' ), $option, $deprecated_keys[ $option ] ) ); return add_option( $deprecated_keys[ $option ], $value, $deprecated, $autoload ); } wp_protect_special_option( $option ); if ( is_object( $value ) ) { $value = clone $value; } $value = sanitize_option( $option, $value ); // Make sure the option doesn't already exist. // We can check the 'notoptions' cache before we ask for a DB query. $notoptions = wp_cache_get( 'notoptions', 'options' ); if ( ! is_array( $notoptions ) || ! isset( $notoptions[ $option ] ) ) { /** This filter is documented in wp-includes/option.php */ if ( apply_filters( "default_option_{$option}", false, $option, false ) !== get_option( $option ) ) { return false; } } $serialized_value = maybe_serialize( $value ); $autoload = ( 'no' === $autoload || false === $autoload ) ? 'no' : 'yes'; /** * Fires before an option is added. * * @since 2.9.0 * * @param string $option Name of the option to add. * @param mixed $value Value of the option. */ do_action( 'add_option', $option, $value ); $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, $serialized_value, $autoload ) ); if ( ! $result ) { return false; } if ( ! wp_installing() ) { if ( 'yes' === $autoload ) { $alloptions = wp_load_alloptions( true ); $alloptions[ $option ] = $serialized_value; wp_cache_set( 'alloptions', $alloptions, 'options' ); } else { wp_cache_set( $option, $serialized_value, 'options' ); } } // This option exists now. $notoptions = wp_cache_get( 'notoptions', 'options' ); // Yes, again... we need it to be fresh. if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { unset( $notoptions[ $option ] ); wp_cache_set( 'notoptions', $notoptions, 'options' ); } /** * Fires after a specific option has been added. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.5.0 As "add_option_{$name}" * @since 3.0.0 * * @param string $option Name of the option to add. * @param mixed $value Value of the option. */ do_action( "add_option_{$option}", $option, $value ); /** * Fires after an option has been added. * * @since 2.9.0 * * @param string $option Name of the added option. * @param mixed $value Value of the option. */ do_action( 'added_option', $option, $value ); return true; } /** * Removes option by name. Prevents removal of protected WordPress options. * * @since 1.2.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $option Name of the option to delete. Expected to not be SQL-escaped. * @return bool True if the option was deleted, false otherwise. */ function delete_option( $option ) { global $wpdb; if ( is_scalar( $option ) ) { $option = trim( $option ); } if ( empty( $option ) ) { return false; } wp_protect_special_option( $option ); // Get the ID, if no ID then return. $row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) ); if ( is_null( $row ) ) { return false; } /** * Fires immediately before an option is deleted. * * @since 2.9.0 * * @param string $option Name of the option to delete. */ do_action( 'delete_option', $option ); $result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) ); if ( ! wp_installing() ) { if ( 'yes' === $row->autoload ) { $alloptions = wp_load_alloptions( true ); if ( is_array( $alloptions ) && isset( $alloptions[ $option ] ) ) { unset( $alloptions[ $option ] ); wp_cache_set( 'alloptions', $alloptions, 'options' ); } } else { wp_cache_delete( $option, 'options' ); } } if ( $result ) { /** * Fires after a specific option has been deleted. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 3.0.0 * * @param string $option Name of the deleted option. */ do_action( "delete_option_{$option}", $option ); /** * Fires after an option has been deleted. * * @since 2.9.0 * * @param string $option Name of the deleted option. */ do_action( 'deleted_option', $option ); return true; } return false; } /** * Deletes a transient. * * @since 2.8.0 * * @param string $transient Transient name. Expected to not be SQL-escaped. * @return bool True if the transient was deleted, false otherwise. */ function delete_transient( $transient ) { /** * Fires immediately before a specific transient is deleted. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * * @param string $transient Transient name. */ do_action( "delete_transient_{$transient}", $transient ); if ( wp_using_ext_object_cache() || wp_installing() ) { $result = wp_cache_delete( $transient, 'transient' ); } else { $option_timeout = '_transient_timeout_' . $transient; $option = '_transient_' . $transient; $result = delete_option( $option ); if ( $result ) { delete_option( $option_timeout ); } } if ( $result ) { /** * Fires after a transient is deleted. * * @since 3.0.0 * * @param string $transient Deleted transient name. */ do_action( 'deleted_transient', $transient ); } return $result; } /** * Retrieves the value of a transient. * * If the transient does not exist, does not have a value, or has expired, * then the return value will be false. * * @since 2.8.0 * * @param string $transient Transient name. Expected to not be SQL-escaped. * @return mixed Value of transient. */ function get_transient( $transient ) { /** * Filters the value of an existing transient before it is retrieved. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * Returning a truthy value from the filter will effectively short-circuit retrieval * and return the passed value instead. * * @since 2.8.0 * @since 4.4.0 The `$transient` parameter was added * * @param mixed $pre_transient The default value to return if the transient does not exist. * Any value other than false will short-circuit the retrieval * of the transient, and return that value. * @param string $transient Transient name. */ $pre = apply_filters( "pre_transient_{$transient}", false, $transient ); if ( false !== $pre ) { return $pre; } if ( wp_using_ext_object_cache() || wp_installing() ) { $value = wp_cache_get( $transient, 'transient' ); } else { $transient_option = '_transient_' . $transient; if ( ! wp_installing() ) { // If option is not in alloptions, it is not autoloaded and thus has a timeout. $alloptions = wp_load_alloptions(); if ( ! isset( $alloptions[ $transient_option ] ) ) { $transient_timeout = '_transient_timeout_' . $transient; $timeout = get_option( $transient_timeout ); if ( false !== $timeout && $timeout < time() ) { delete_option( $transient_option ); delete_option( $transient_timeout ); $value = false; } } } if ( ! isset( $value ) ) { $value = get_option( $transient_option ); } } /** * Filters an existing transient's value. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 2.8.0 * @since 4.4.0 The `$transient` parameter was added * * @param mixed $value Value of transient. * @param string $transient Transient name. */ return apply_filters( "transient_{$transient}", $value, $transient ); } /** * Sets/updates the value of a transient. * * You do not need to serialize values. If the value needs to be serialized, * then it will be serialized before it is set. * * @since 2.8.0 * * @param string $transient Transient name. Expected to not be SQL-escaped. * Must be 172 characters or fewer in length. * @param mixed $value Transient value. Must be serializable if non-scalar. * Expected to not be SQL-escaped. * @param int $expiration Optional. Time until expiration in seconds. Default 0 (no expiration). * @return bool True if the value was set, false otherwise. */ function set_transient( $transient, $value, $expiration = 0 ) { $expiration = (int) $expiration; /** * Filters a specific transient before its value is set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * @since 4.2.0 The `$expiration` parameter was added. * @since 4.4.0 The `$transient` parameter was added. * * @param mixed $value New value of transient. * @param int $expiration Time until expiration in seconds. * @param string $transient Transient name. */ $value = apply_filters( "pre_set_transient_{$transient}", $value, $expiration, $transient ); /** * Filters the expiration for a transient before its value is set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 4.4.0 * * @param int $expiration Time until expiration in seconds. Use 0 for no expiration. * @param mixed $value New value of transient. * @param string $transient Transient name. */ $expiration = apply_filters( "expiration_of_transient_{$transient}", $expiration, $value, $transient ); if ( wp_using_ext_object_cache() || wp_installing() ) { $result = wp_cache_set( $transient, $value, 'transient', $expiration ); } else { $transient_timeout = '_transient_timeout_' . $transient; $transient_option = '_transient_' . $transient; if ( false === get_option( $transient_option ) ) { $autoload = 'yes'; if ( $expiration ) { $autoload = 'no'; add_option( $transient_timeout, time() + $expiration, '', 'no' ); } $result = add_option( $transient_option, $value, '', $autoload ); } else { // If expiration is requested, but the transient has no timeout option, // delete, then re-create transient rather than update. $update = true; if ( $expiration ) { if ( false === get_option( $transient_timeout ) ) { delete_option( $transient_option ); add_option( $transient_timeout, time() + $expiration, '', 'no' ); $result = add_option( $transient_option, $value, '', 'no' ); $update = false; } else { update_option( $transient_timeout, time() + $expiration ); } } if ( $update ) { $result = update_option( $transient_option, $value ); } } } if ( $result ) { /** * Fires after the value for a specific transient has been set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * @since 3.6.0 The `$value` and `$expiration` parameters were added. * @since 4.4.0 The `$transient` parameter was added. * * @param mixed $value Transient value. * @param int $expiration Time until expiration in seconds. * @param string $transient The name of the transient. */ do_action( "set_transient_{$transient}", $value, $expiration, $transient ); /** * Fires after the value for a transient has been set. * * @since 3.0.0 * @since 3.6.0 The `$value` and `$expiration` parameters were added. * * @param string $transient The name of the transient. * @param mixed $value Transient value. * @param int $expiration Time until expiration in seconds. */ do_action( 'setted_transient', $transient, $value, $expiration ); } return $result; } /** * Deletes all expired transients. * * The multi-table delete syntax is used to delete the transient record * from table a, and the corresponding transient_timeout record from table b. * * @since 4.9.0 * * @param bool $force_db Optional. Force cleanup to run against the database even when an external object cache is used. */ function delete_expired_transients( $force_db = false ) { global $wpdb; if ( ! $force_db && wp_using_ext_object_cache() ) { return; } $wpdb->query( $wpdb->prepare( "DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b WHERE a.option_name LIKE %s AND a.option_name NOT LIKE %s AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) ) AND b.option_value < %d", $wpdb->esc_like( '_transient_' ) . '%', $wpdb->esc_like( '_transient_timeout_' ) . '%', time() ) ); if ( ! is_multisite() ) { // Single site stores site transients in the options table. $wpdb->query( $wpdb->prepare( "DELETE a, b FROM {$wpdb->options} a, {$wpdb->options} b WHERE a.option_name LIKE %s AND a.option_name NOT LIKE %s AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) ) AND b.option_value < %d", $wpdb->esc_like( '_site_transient_' ) . '%', $wpdb->esc_like( '_site_transient_timeout_' ) . '%', time() ) ); } elseif ( is_multisite() && is_main_site() && is_main_network() ) { // Multisite stores site transients in the sitemeta table. $wpdb->query( $wpdb->prepare( "DELETE a, b FROM {$wpdb->sitemeta} a, {$wpdb->sitemeta} b WHERE a.meta_key LIKE %s AND a.meta_key NOT LIKE %s AND b.meta_key = CONCAT( '_site_transient_timeout_', SUBSTRING( a.meta_key, 17 ) ) AND b.meta_value < %d", $wpdb->esc_like( '_site_transient_' ) . '%', $wpdb->esc_like( '_site_transient_timeout_' ) . '%', time() ) ); } } /** * Saves and restores user interface settings stored in a cookie. * * Checks if the current user-settings cookie is updated and stores it. When no * cookie exists (different browser used), adds the last saved cookie restoring * the settings. * * @since 2.7.0 */ function wp_user_settings() { if ( ! is_admin() || wp_doing_ajax() ) { return; } $user_id = get_current_user_id(); if ( ! $user_id ) { return; } if ( ! is_user_member_of_blog() ) { return; } $settings = (string) get_user_option( 'user-settings', $user_id ); if ( isset( $_COOKIE[ 'wp-settings-' . $user_id ] ) ) { $cookie = preg_replace( '/[^A-Za-z0-9=&_]/', '', $_COOKIE[ 'wp-settings-' . $user_id ] ); // No change or both empty. if ( $cookie == $settings ) { return; } $last_saved = (int) get_user_option( 'user-settings-time', $user_id ); $current = isset( $_COOKIE[ 'wp-settings-time-' . $user_id ] ) ? preg_replace( '/[^0-9]/', '', $_COOKIE[ 'wp-settings-time-' . $user_id ] ) : 0; // The cookie is newer than the saved value. Update the user_option and leave the cookie as-is. if ( $current > $last_saved ) { update_user_option( $user_id, 'user-settings', $cookie, false ); update_user_option( $user_id, 'user-settings-time', time() - 5, false ); return; } } // The cookie is not set in the current browser or the saved value is newer. $secure = ( 'https' === parse_url( admin_url(), PHP_URL_SCHEME ) ); setcookie( 'wp-settings-' . $user_id, $settings, time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure ); setcookie( 'wp-settings-time-' . $user_id, time(), time() + YEAR_IN_SECONDS, SITECOOKIEPATH, null, $secure ); $_COOKIE[ 'wp-settings-' . $user_id ] = $settings; } /** * Retrieves user interface setting value based on setting name. * * @since 2.7.0 * * @param string $name The name of the setting. * @param string|false $default Optional. Default value to return when $name is not set. Default false. * @return mixed The last saved user setting or the default value/false if it doesn't exist. */ function get_user_setting( $name, $default = false ) { $all_user_settings = get_all_user_settings(); return isset( $all_user_settings[ $name ] ) ? $all_user_settings[ $name ] : $default; } /** * Adds or updates user interface setting. * * Both $name and $value can contain only ASCII letters, numbers, hyphens, and underscores. * * This function has to be used before any output has started as it calls setcookie(). * * @since 2.8.0 * * @param string $name The name of the setting. * @param string $value The value for the setting. * @return bool|null True if set successfully, false otherwise. * Null if the current user is not a member of the site. */ function set_user_setting( $name, $value ) { if ( headers_sent() ) { return false; } $all_user_settings = get_all_user_settings(); $all_user_settings[ $name ] = $value; return wp_set_all_user_settings( $all_user_settings ); } /** * Deletes user interface settings. * * Deleting settings would reset them to the defaults. * * This function has to be used before any output has started as it calls setcookie(). * * @since 2.7.0 * * @param string $names The name or array of names of the setting to be deleted. * @return bool|null True if deleted successfully, false otherwise. * Null if the current user is not a member of the site. */ function delete_user_setting( $names ) { if ( headers_sent() ) { return false; } $all_user_settings = get_all_user_settings(); $names = (array) $names; $deleted = false; foreach ( $names as $name ) { if ( isset( $all_user_settings[ $name ] ) ) { unset( $all_user_settings[ $name ] ); $deleted = true; } } if ( $deleted ) { return wp_set_all_user_settings( $all_user_settings ); } return false; } /** * Retrieves all user interface settings. * * @since 2.7.0 * * @global array $_updated_user_settings * * @return array The last saved user settings or empty array. */ function get_all_user_settings() { global $_updated_user_settings; $user_id = get_current_user_id(); if ( ! $user_id ) { return array(); } if ( isset( $_updated_user_settings ) && is_array( $_updated_user_settings ) ) { return $_updated_user_settings; } $user_settings = array(); if ( isset( $_COOKIE[ 'wp-settings-' . $user_id ] ) ) { $cookie = preg_replace( '/[^A-Za-z0-9=&_-]/', '', $_COOKIE[ 'wp-settings-' . $user_id ] ); if ( strpos( $cookie, '=' ) ) { // '=' cannot be 1st char. parse_str( $cookie, $user_settings ); } } else { $option = get_user_option( 'user-settings', $user_id ); if ( $option && is_string( $option ) ) { parse_str( $option, $user_settings ); } } $_updated_user_settings = $user_settings; return $user_settings; } /** * Private. Sets all user interface settings. * * @since 2.8.0 * @access private * * @global array $_updated_user_settings * * @param array $user_settings User settings. * @return bool|null True if set successfully, false if the current user could not be found. * Null if the current user is not a member of the site. */ function wp_set_all_user_settings( $user_settings ) { global $_updated_user_settings; $user_id = get_current_user_id(); if ( ! $user_id ) { return false; } if ( ! is_user_member_of_blog() ) { return; } $settings = ''; foreach ( $user_settings as $name => $value ) { $_name = preg_replace( '/[^A-Za-z0-9_-]+/', '', $name ); $_value = preg_replace( '/[^A-Za-z0-9_-]+/', '', $value ); if ( ! empty( $_name ) ) { $settings .= $_name . '=' . $_value . '&'; } } $settings = rtrim( $settings, '&' ); parse_str( $settings, $_updated_user_settings ); update_user_option( $user_id, 'user-settings', $settings, false ); update_user_option( $user_id, 'user-settings-time', time(), false ); return true; } /** * Deletes the user settings of the current user. * * @since 2.7.0 */ function delete_all_user_settings() { $user_id = get_current_user_id(); if ( ! $user_id ) { return; } update_user_option( $user_id, 'user-settings', '', false ); setcookie( 'wp-settings-' . $user_id, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH ); } /** * Retrieve an option value for the current network based on name of option. * * @since 2.8.0 * @since 4.4.0 The `$use_cache` parameter was deprecated. * @since 4.4.0 Modified into wrapper for get_network_option() * * @see get_network_option() * * @param string $option Name of the option to retrieve. Expected to not be SQL-escaped. * @param mixed $default Optional. Value to return if the option doesn't exist. Default false. * @param bool $deprecated Whether to use cache. Multisite only. Always set to true. * @return mixed Value set for the option. */ function get_site_option( $option, $default = false, $deprecated = true ) { return get_network_option( null, $option, $default ); } /** * Adds a new option for the current network. * * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. * * @since 2.8.0 * @since 4.4.0 Modified into wrapper for add_network_option() * * @see add_network_option() * * @param string $option Name of the option to add. Expected to not be SQL-escaped. * @param mixed $value Option value, can be anything. Expected to not be SQL-escaped. * @return bool True if the option was added, false otherwise. */ function add_site_option( $option, $value ) { return add_network_option( null, $option, $value ); } /** * Removes a option by name for the current network. * * @since 2.8.0 * @since 4.4.0 Modified into wrapper for delete_network_option() * * @see delete_network_option() * * @param string $option Name of the option to delete. Expected to not be SQL-escaped. * @return bool True if the option was deleted, false otherwise. */ function delete_site_option( $option ) { return delete_network_option( null, $option ); } /** * Updates the value of an option that was already added for the current network. * * @since 2.8.0 * @since 4.4.0 Modified into wrapper for update_network_option() * * @see update_network_option() * * @param string $option Name of the option. Expected to not be SQL-escaped. * @param mixed $value Option value. Expected to not be SQL-escaped. * @return bool True if the value was updated, false otherwise. */ function update_site_option( $option, $value ) { return update_network_option( null, $option, $value ); } /** * Retrieves a network's option value based on the option name. * * @since 4.4.0 * * @see get_option() * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id ID of the network. Can be null to default to the current network ID. * @param string $option Name of the option to retrieve. Expected to not be SQL-escaped. * @param mixed $default Optional. Value to return if the option doesn't exist. Default false. * @return mixed Value set for the option. */ function get_network_option( $network_id, $option, $default = false ) { global $wpdb; if ( $network_id && ! is_numeric( $network_id ) ) { return false; } $network_id = (int) $network_id; // Fallback to the current network if a network ID is not specified. if ( ! $network_id ) { $network_id = get_current_network_id(); } /** * Filters the value of an existing network option before it is retrieved. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * Returning a truthy value from the filter will effectively short-circuit retrieval * and return the passed value instead. * * @since 2.9.0 As 'pre_site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * @since 4.9.0 The `$default` parameter was added. * * @param mixed $pre_option The value to return instead of the option value. This differs * from `$default`, which is used as the fallback value in the event * the option doesn't exist elsewhere in get_network_option(). * Default false (to skip past the short-circuit). * @param string $option Option name. * @param int $network_id ID of the network. * @param mixed $default The fallback value to return if the option does not exist. * Default false. */ $pre = apply_filters( "pre_site_option_{$option}", false, $option, $network_id, $default ); if ( false !== $pre ) { return $pre; } // Prevent non-existent options from triggering multiple queries. $notoptions_key = "$network_id:notoptions"; $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { /** * Filters a specific default network option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 3.4.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $default The value to return if the site option does not exist * in the database. * @param string $option Option name. * @param int $network_id ID of the network. */ return apply_filters( "default_site_option_{$option}", $default, $option, $network_id ); } if ( ! is_multisite() ) { /** This filter is documented in wp-includes/option.php */ $default = apply_filters( 'default_site_option_' . $option, $default, $option, $network_id ); $value = get_option( $option, $default ); } else { $cache_key = "$network_id:$option"; $value = wp_cache_get( $cache_key, 'site-options' ); if ( ! isset( $value ) || false === $value ) { $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $network_id ) ); // Has to be get_row() instead of get_var() because of funkiness with 0, false, null values. if ( is_object( $row ) ) { $value = $row->meta_value; $value = maybe_unserialize( $value ); wp_cache_set( $cache_key, $value, 'site-options' ); } else { if ( ! is_array( $notoptions ) ) { $notoptions = array(); } $notoptions[ $option ] = true; wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); /** This filter is documented in wp-includes/option.php */ $value = apply_filters( 'default_site_option_' . $option, $default, $option, $network_id ); } } } if ( ! is_array( $notoptions ) ) { $notoptions = array(); wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); } /** * Filters the value of an existing network option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As 'site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $value Value of network option. * @param string $option Option name. * @param int $network_id ID of the network. */ return apply_filters( "site_option_{$option}", $value, $option, $network_id ); } /** * Adds a new network option. * * Existing options will not be updated. * * @since 4.4.0 * * @see add_option() * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id ID of the network. Can be null to default to the current network ID. * @param string $option Name of the option to add. Expected to not be SQL-escaped. * @param mixed $value Option value, can be anything. Expected to not be SQL-escaped. * @return bool True if the option was added, false otherwise. */ function add_network_option( $network_id, $option, $value ) { global $wpdb; if ( $network_id && ! is_numeric( $network_id ) ) { return false; } $network_id = (int) $network_id; // Fallback to the current network if a network ID is not specified. if ( ! $network_id ) { $network_id = get_current_network_id(); } wp_protect_special_option( $option ); /** * Filters the value of a specific network option before it is added. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As 'pre_add_site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $value Value of network option. * @param string $option Option name. * @param int $network_id ID of the network. */ $value = apply_filters( "pre_add_site_option_{$option}", $value, $option, $network_id ); $notoptions_key = "$network_id:notoptions"; if ( ! is_multisite() ) { $result = add_option( $option, $value, '', 'no' ); } else { $cache_key = "$network_id:$option"; // Make sure the option doesn't already exist. // We can check the 'notoptions' cache before we ask for a DB query. $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); if ( ! is_array( $notoptions ) || ! isset( $notoptions[ $option ] ) ) { if ( false !== get_network_option( $network_id, $option, false ) ) { return false; } } $value = sanitize_option( $option, $value ); $serialized_value = maybe_serialize( $value ); $result = $wpdb->insert( $wpdb->sitemeta, array( 'site_id' => $network_id, 'meta_key' => $option, 'meta_value' => $serialized_value, ) ); if ( ! $result ) { return false; } wp_cache_set( $cache_key, $value, 'site-options' ); // This option exists now. $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); // Yes, again... we need it to be fresh. if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { unset( $notoptions[ $option ] ); wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); } } if ( $result ) { /** * Fires after a specific network option has been successfully added. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As "add_site_option_{$key}" * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param mixed $value Value of the network option. * @param int $network_id ID of the network. */ do_action( "add_site_option_{$option}", $option, $value, $network_id ); /** * Fires after a network option has been successfully added. * * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param mixed $value Value of the network option. * @param int $network_id ID of the network. */ do_action( 'add_site_option', $option, $value, $network_id ); return true; } return false; } /** * Removes a network option by name. * * @since 4.4.0 * * @see delete_option() * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id ID of the network. Can be null to default to the current network ID. * @param string $option Name of the option to delete. Expected to not be SQL-escaped. * @return bool True if the option was deleted, false otherwise. */ function delete_network_option( $network_id, $option ) { global $wpdb; if ( $network_id && ! is_numeric( $network_id ) ) { return false; } $network_id = (int) $network_id; // Fallback to the current network if a network ID is not specified. if ( ! $network_id ) { $network_id = get_current_network_id(); } /** * Fires immediately before a specific network option is deleted. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Option name. * @param int $network_id ID of the network. */ do_action( "pre_delete_site_option_{$option}", $option, $network_id ); if ( ! is_multisite() ) { $result = delete_option( $option ); } else { $row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_id FROM {$wpdb->sitemeta} WHERE meta_key = %s AND site_id = %d", $option, $network_id ) ); if ( is_null( $row ) || ! $row->meta_id ) { return false; } $cache_key = "$network_id:$option"; wp_cache_delete( $cache_key, 'site-options' ); $result = $wpdb->delete( $wpdb->sitemeta, array( 'meta_key' => $option, 'site_id' => $network_id, ) ); } if ( $result ) { /** * Fires after a specific network option has been deleted. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As "delete_site_option_{$key}" * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param int $network_id ID of the network. */ do_action( "delete_site_option_{$option}", $option, $network_id ); /** * Fires after a network option has been deleted. * * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param int $network_id ID of the network. */ do_action( 'delete_site_option', $option, $network_id ); return true; } return false; } /** * Updates the value of a network option that was already added. * * @since 4.4.0 * * @see update_option() * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $network_id ID of the network. Can be null to default to the current network ID. * @param string $option Name of the option. Expected to not be SQL-escaped. * @param mixed $value Option value. Expected to not be SQL-escaped. * @return bool True if the value was updated, false otherwise. */ function update_network_option( $network_id, $option, $value ) { global $wpdb; if ( $network_id && ! is_numeric( $network_id ) ) { return false; } $network_id = (int) $network_id; // Fallback to the current network if a network ID is not specified. if ( ! $network_id ) { $network_id = get_current_network_id(); } wp_protect_special_option( $option ); $old_value = get_network_option( $network_id, $option, false ); /** * Filters a specific network option before its value is updated. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As 'pre_update_site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $value New value of the network option. * @param mixed $old_value Old value of the network option. * @param string $option Option name. * @param int $network_id ID of the network. */ $value = apply_filters( "pre_update_site_option_{$option}", $value, $old_value, $option, $network_id ); /* * If the new and old values are the same, no need to update. * * Unserialized values will be adequate in most cases. If the unserialized * data differs, the (maybe) serialized data is checked to avoid * unnecessary database calls for otherwise identical object instances. * * See https://core.trac.wordpress.org/ticket/44956 */ if ( $value === $old_value || maybe_serialize( $value ) === maybe_serialize( $old_value ) ) { return false; } if ( false === $old_value ) { return add_network_option( $network_id, $option, $value ); } $notoptions_key = "$network_id:notoptions"; $notoptions = wp_cache_get( $notoptions_key, 'site-options' ); if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) { unset( $notoptions[ $option ] ); wp_cache_set( $notoptions_key, $notoptions, 'site-options' ); } if ( ! is_multisite() ) { $result = update_option( $option, $value, 'no' ); } else { $value = sanitize_option( $option, $value ); $serialized_value = maybe_serialize( $value ); $result = $wpdb->update( $wpdb->sitemeta, array( 'meta_value' => $serialized_value ), array( 'site_id' => $network_id, 'meta_key' => $option, ) ); if ( $result ) { $cache_key = "$network_id:$option"; wp_cache_set( $cache_key, $value, 'site-options' ); } } if ( $result ) { /** * Fires after the value of a specific network option has been successfully updated. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As "update_site_option_{$key}" * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param mixed $value Current value of the network option. * @param mixed $old_value Old value of the network option. * @param int $network_id ID of the network. */ do_action( "update_site_option_{$option}", $option, $value, $old_value, $network_id ); /** * Fires after the value of a network option has been successfully updated. * * @since 3.0.0 * @since 4.7.0 The `$network_id` parameter was added. * * @param string $option Name of the network option. * @param mixed $value Current value of the network option. * @param mixed $old_value Old value of the network option. * @param int $network_id ID of the network. */ do_action( 'update_site_option', $option, $value, $old_value, $network_id ); return true; } return false; } /** * Deletes a site transient. * * @since 2.9.0 * * @param string $transient Transient name. Expected to not be SQL-escaped. * @return bool True if the transient was deleted, false otherwise. */ function delete_site_transient( $transient ) { /** * Fires immediately before a specific site transient is deleted. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * * @param string $transient Transient name. */ do_action( "delete_site_transient_{$transient}", $transient ); if ( wp_using_ext_object_cache() || wp_installing() ) { $result = wp_cache_delete( $transient, 'site-transient' ); } else { $option_timeout = '_site_transient_timeout_' . $transient; $option = '_site_transient_' . $transient; $result = delete_site_option( $option ); if ( $result ) { delete_site_option( $option_timeout ); } } if ( $result ) { /** * Fires after a transient is deleted. * * @since 3.0.0 * * @param string $transient Deleted transient name. */ do_action( 'deleted_site_transient', $transient ); } return $result; } /** * Retrieves the value of a site transient. * * If the transient does not exist, does not have a value, or has expired, * then the return value will be false. * * @since 2.9.0 * * @see get_transient() * * @param string $transient Transient name. Expected to not be SQL-escaped. * @return mixed Value of transient. */ function get_site_transient( $transient ) { /** * Filters the value of an existing site transient before it is retrieved. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * Returning a truthy value from the filter will effectively short-circuit retrieval * and return the passed value instead. * * @since 2.9.0 * @since 4.4.0 The `$transient` parameter was added. * * @param mixed $pre_site_transient The default value to return if the site transient does not exist. * Any value other than false will short-circuit the retrieval * of the transient, and return that value. * @param string $transient Transient name. */ $pre = apply_filters( "pre_site_transient_{$transient}", false, $transient ); if ( false !== $pre ) { return $pre; } if ( wp_using_ext_object_cache() || wp_installing() ) { $value = wp_cache_get( $transient, 'site-transient' ); } else { // Core transients that do not have a timeout. Listed here so querying timeouts can be avoided. $no_timeout = array( 'update_core', 'update_plugins', 'update_themes' ); $transient_option = '_site_transient_' . $transient; if ( ! in_array( $transient, $no_timeout, true ) ) { $transient_timeout = '_site_transient_timeout_' . $transient; $timeout = get_site_option( $transient_timeout ); if ( false !== $timeout && $timeout < time() ) { delete_site_option( $transient_option ); delete_site_option( $transient_timeout ); $value = false; } } if ( ! isset( $value ) ) { $value = get_site_option( $transient_option ); } } /** * Filters the value of an existing site transient. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 2.9.0 * @since 4.4.0 The `$transient` parameter was added. * * @param mixed $value Value of site transient. * @param string $transient Transient name. */ return apply_filters( "site_transient_{$transient}", $value, $transient ); } /** * Sets/updates the value of a site transient. * * You do not need to serialize values. If the value needs to be serialized, * then it will be serialized before it is set. * * @since 2.9.0 * * @see set_transient() * * @param string $transient Transient name. Expected to not be SQL-escaped. Must be * 167 characters or fewer in length. * @param mixed $value Transient value. Expected to not be SQL-escaped. * @param int $expiration Optional. Time until expiration in seconds. Default 0 (no expiration). * @return bool True if the value was set, false otherwise. */ function set_site_transient( $transient, $value, $expiration = 0 ) { /** * Filters the value of a specific site transient before it is set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * @since 4.4.0 The `$transient` parameter was added. * * @param mixed $value New value of site transient. * @param string $transient Transient name. */ $value = apply_filters( "pre_set_site_transient_{$transient}", $value, $transient ); $expiration = (int) $expiration; /** * Filters the expiration for a site transient before its value is set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 4.4.0 * * @param int $expiration Time until expiration in seconds. Use 0 for no expiration. * @param mixed $value New value of site transient. * @param string $transient Transient name. */ $expiration = apply_filters( "expiration_of_site_transient_{$transient}", $expiration, $value, $transient ); if ( wp_using_ext_object_cache() || wp_installing() ) { $result = wp_cache_set( $transient, $value, 'site-transient', $expiration ); } else { $transient_timeout = '_site_transient_timeout_' . $transient; $option = '_site_transient_' . $transient; if ( false === get_site_option( $option ) ) { if ( $expiration ) { add_site_option( $transient_timeout, time() + $expiration ); } $result = add_site_option( $option, $value ); } else { if ( $expiration ) { update_site_option( $transient_timeout, time() + $expiration ); } $result = update_site_option( $option, $value ); } } if ( $result ) { /** * Fires after the value for a specific site transient has been set. * * The dynamic portion of the hook name, `$transient`, refers to the transient name. * * @since 3.0.0 * @since 4.4.0 The `$transient` parameter was added * * @param mixed $value Site transient value. * @param int $expiration Time until expiration in seconds. * @param string $transient Transient name. */ do_action( "set_site_transient_{$transient}", $value, $expiration, $transient ); /** * Fires after the value for a site transient has been set. * * @since 3.0.0 * * @param string $transient The name of the site transient. * @param mixed $value Site transient value. * @param int $expiration Time until expiration in seconds. */ do_action( 'setted_site_transient', $transient, $value, $expiration ); } return $result; } /** * Registers default settings available in WordPress. * * The settings registered here are primarily useful for the REST API, so this * does not encompass all settings available in WordPress. * * @since 4.7.0 */ function register_initial_settings() { register_setting( 'general', 'blogname', array( 'show_in_rest' => array( 'name' => 'title', ), 'type' => 'string', 'description' => __( 'Site title.' ), ) ); register_setting( 'general', 'blogdescription', array( 'show_in_rest' => array( 'name' => 'description', ), 'type' => 'string', 'description' => __( 'Site tagline.' ), ) ); if ( ! is_multisite() ) { register_setting( 'general', 'siteurl', array( 'show_in_rest' => array( 'name' => 'url', 'schema' => array( 'format' => 'uri', ), ), 'type' => 'string', 'description' => __( 'Site URL.' ), ) ); } if ( ! is_multisite() ) { register_setting( 'general', 'admin_email', array( 'show_in_rest' => array( 'name' => 'email', 'schema' => array( 'format' => 'email', ), ), 'type' => 'string', 'description' => __( 'This address is used for admin purposes, like new user notification.' ), ) ); } register_setting( 'general', 'timezone_string', array( 'show_in_rest' => array( 'name' => 'timezone', ), 'type' => 'string', 'description' => __( 'A city in the same timezone as you.' ), ) ); register_setting( 'general', 'date_format', array( 'show_in_rest' => true, 'type' => 'string', 'description' => __( 'A date format for all date strings.' ), ) ); register_setting( 'general', 'time_format', array( 'show_in_rest' => true, 'type' => 'string', 'description' => __( 'A time format for all time strings.' ), ) ); register_setting( 'general', 'start_of_week', array( 'show_in_rest' => true, 'type' => 'integer', 'description' => __( 'A day number of the week that the week should start on.' ), ) ); register_setting( 'general', 'WPLANG', array( 'show_in_rest' => array( 'name' => 'language', ), 'type' => 'string', 'description' => __( 'WordPress locale code.' ), 'default' => 'en_US', ) ); register_setting( 'writing', 'use_smilies', array( 'show_in_rest' => true, 'type' => 'boolean', 'description' => __( 'Convert emoticons like :-) and :-P to graphics on display.' ), 'default' => true, ) ); register_setting( 'writing', 'default_category', array( 'show_in_rest' => true, 'type' => 'integer', 'description' => __( 'Default post category.' ), ) ); register_setting( 'writing', 'default_post_format', array( 'show_in_rest' => true, 'type' => 'string', 'description' => __( 'Default post format.' ), ) ); register_setting( 'reading', 'posts_per_page', array( 'show_in_rest' => true, 'type' => 'integer', 'description' => __( 'Blog pages show at most.' ), 'default' => 10, ) ); register_setting( 'discussion', 'default_ping_status', array( 'show_in_rest' => array( 'schema' => array( 'enum' => array( 'open', 'closed' ), ), ), 'type' => 'string', 'description' => __( 'Allow link notifications from other blogs (pingbacks and trackbacks) on new articles.' ), ) ); register_setting( 'discussion', 'default_comment_status', array( 'show_in_rest' => array( 'schema' => array( 'enum' => array( 'open', 'closed' ), ), ), 'type' => 'string', 'description' => __( 'Allow people to submit comments on new posts.' ), ) ); } /** * Registers a setting and its data. * * @since 2.7.0 * @since 3.0.0 The `misc` option group was deprecated. * @since 3.5.0 The `privacy` option group was deprecated. * @since 4.7.0 `$args` can be passed to set flags on the setting, similar to `register_meta()`. * @since 5.5.0 `$new_whitelist_options` was renamed to `$new_allowed_options`. * Please consider writing more inclusive code. * * @global array $new_allowed_options * @global array $wp_registered_settings * * @param string $option_group A settings group name. Should correspond to an allowed option key name. * Default allowed option key names include 'general', 'discussion', 'media', * 'reading', 'writing', and 'options'. * @param string $option_name The name of an option to sanitize and save. * @param array $args { * Data used to describe the setting when registered. * * @type string $type The type of data associated with this setting. * Valid values are 'string', 'boolean', 'integer', 'number', 'array', and 'object'. * @type string $description A description of the data attached to this setting. * @type callable $sanitize_callback A callback function that sanitizes the option's value. * @type bool|array $show_in_rest Whether data associated with this setting should be included in the REST API. * When registering complex settings, this argument may optionally be an * array with a 'schema' key. * @type mixed $default Default value when calling `get_option()`. * } */ function register_setting( $option_group, $option_name, $args = array() ) { global $new_allowed_options, $wp_registered_settings; /* * In 5.5.0, the `$new_whitelist_options` global variable was renamed to `$new_allowed_options`. * Please consider writing more inclusive code. */ $GLOBALS['new_whitelist_options'] = &$new_allowed_options; $defaults = array( 'type' => 'string', 'group' => $option_group, 'description' => '', 'sanitize_callback' => null, 'show_in_rest' => false, ); // Back-compat: old sanitize callback is added. if ( is_callable( $args ) ) { $args = array( 'sanitize_callback' => $args, ); } /** * Filters the registration arguments when registering a setting. * * @since 4.7.0 * * @param array $args Array of setting registration arguments. * @param array $defaults Array of default arguments. * @param string $option_group Setting group. * @param string $option_name Setting name. */ $args = apply_filters( 'register_setting_args', $args, $defaults, $option_group, $option_name ); $args = wp_parse_args( $args, $defaults ); // Require an item schema when registering settings with an array type. if ( false !== $args['show_in_rest'] && 'array' === $args['type'] && ( ! is_array( $args['show_in_rest'] ) || ! isset( $args['show_in_rest']['schema']['items'] ) ) ) { _doing_it_wrong( __FUNCTION__, __( 'When registering an "array" setting to show in the REST API, you must specify the schema for each array item in "show_in_rest.schema.items".' ), '5.4.0' ); } if ( ! is_array( $wp_registered_settings ) ) { $wp_registered_settings = array(); } if ( 'misc' === $option_group ) { _deprecated_argument( __FUNCTION__, '3.0.0', sprintf( /* translators: %s: misc */ __( 'The "%s" options group has been removed. Use another settings group.' ), 'misc' ) ); $option_group = 'general'; } if ( 'privacy' === $option_group ) { _deprecated_argument( __FUNCTION__, '3.5.0', sprintf( /* translators: %s: privacy */ __( 'The "%s" options group has been removed. Use another settings group.' ), 'privacy' ) ); $option_group = 'reading'; } $new_allowed_options[ $option_group ][] = $option_name; if ( ! empty( $args['sanitize_callback'] ) ) { add_filter( "sanitize_option_{$option_name}", $args['sanitize_callback'] ); } if ( array_key_exists( 'default', $args ) ) { add_filter( "default_option_{$option_name}", 'filter_default_option', 10, 3 ); } /** * Fires immediately before the setting is registered but after its filters are in place. * * @since 5.5.0 * * @param string $option_group Setting group. * @param string $option_name Setting name. * @param array $args Array of setting registration arguments. */ do_action( 'register_setting', $option_group, $option_name, $args ); $wp_registered_settings[ $option_name ] = $args; } /** * Unregisters a setting. * * @since 2.7.0 * @since 4.7.0 `$sanitize_callback` was deprecated. The callback from `register_setting()` is now used instead. * @since 5.5.0 `$new_whitelist_options` was renamed to `$new_allowed_options`. * Please consider writing more inclusive code. * * @global array $new_allowed_options * @global array $wp_registered_settings * * @param string $option_group The settings group name used during registration. * @param string $option_name The name of the option to unregister. * @param callable $deprecated Optional. Deprecated. */ function unregister_setting( $option_group, $option_name, $deprecated = '' ) { global $new_allowed_options, $wp_registered_settings; /* * In 5.5.0, the `$new_whitelist_options` global variable was renamed to `$new_allowed_options`. * Please consider writing more inclusive code. */ $GLOBALS['new_whitelist_options'] = &$new_allowed_options; if ( 'misc' === $option_group ) { _deprecated_argument( __FUNCTION__, '3.0.0', sprintf( /* translators: %s: misc */ __( 'The "%s" options group has been removed. Use another settings group.' ), 'misc' ) ); $option_group = 'general'; } if ( 'privacy' === $option_group ) { _deprecated_argument( __FUNCTION__, '3.5.0', sprintf( /* translators: %s: privacy */ __( 'The "%s" options group has been removed. Use another settings group.' ), 'privacy' ) ); $option_group = 'reading'; } $pos = array_search( $option_name, (array) $new_allowed_options[ $option_group ], true ); if ( false !== $pos ) { unset( $new_allowed_options[ $option_group ][ $pos ] ); } if ( '' !== $deprecated ) { _deprecated_argument( __FUNCTION__, '4.7.0', sprintf( /* translators: 1: $sanitize_callback, 2: register_setting() */ __( '%1$s is deprecated. The callback from %2$s is used instead.' ), '<code>$sanitize_callback</code>', '<code>register_setting()</code>' ) ); remove_filter( "sanitize_option_{$option_name}", $deprecated ); } if ( isset( $wp_registered_settings[ $option_name ] ) ) { // Remove the sanitize callback if one was set during registration. if ( ! empty( $wp_registered_settings[ $option_name ]['sanitize_callback'] ) ) { remove_filter( "sanitize_option_{$option_name}", $wp_registered_settings[ $option_name ]['sanitize_callback'] ); } // Remove the default filter if a default was provided during registration. if ( array_key_exists( 'default', $wp_registered_settings[ $option_name ] ) ) { remove_filter( "default_option_{$option_name}", 'filter_default_option', 10 ); } /** * Fires immediately before the setting is unregistered and after its filters have been removed. * * @since 5.5.0 * * @param string $option_group Setting group. * @param string $option_name Setting name. */ do_action( 'unregister_setting', $option_group, $option_name ); unset( $wp_registered_settings[ $option_name ] ); } } /** * Retrieves an array of registered settings. * * @since 4.7.0 * * @global array $wp_registered_settings * * @return array List of registered settings, keyed by option name. */ function get_registered_settings() { global $wp_registered_settings; if ( ! is_array( $wp_registered_settings ) ) { return array(); } return $wp_registered_settings; } /** * Filters the default value for the option. * * For settings which register a default setting in `register_setting()`, this * function is added as a filter to `default_option_{$option}`. * * @since 4.7.0 * * @param mixed $default Existing default value to return. * @param string $option Option name. * @param bool $passed_default Was `get_option()` passed a default value? * @return mixed Filtered default value. */ function filter_default_option( $default, $option, $passed_default ) { if ( $passed_default ) { return $default; } $registered = get_registered_settings(); if ( empty( $registered[ $option ] ) ) { return $default; } return $registered[ $option ]['default']; } Submit