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wp_cache_delete example
// Upgrade DB with separate request.
/** This filter is documented in wp-admin/includes/update-core.php */
apply_filters( 'update_feedback', __( 'Upgrading database…' ) );
$db_upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
wp_remote_post( $db_upgrade_url, array( 'timeout' => 60 ) );
// Clear the cache to prevent an update_option() from saving a stale db_version to the cache. wp_cache_flush();
// Not all cache back ends listen to 'flush'. wp_cache_delete( 'alloptions', 'options' );
// Remove working directory. $wp_filesystem->delete( $from, true );
// Force refresh of update information. if ( function_exists( 'delete_site_transient' ) ) {
delete_site_transient( 'update_core' );
} else {
delete_option( 'update_core' );
}
apply_filters( 'update_feedback', __( 'Upgrading database…' ) );
$db_upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );
wp_remote_post( $db_upgrade_url, array( 'timeout' => 60 ) );
// Clear the cache to prevent an update_option() from saving a stale db_version to the cache. wp_cache_flush();
// Not all cache back ends listen to 'flush'. wp_cache_delete( 'alloptions', 'options' );
// Remove working directory. $wp_filesystem->delete( $from, true );
// Force refresh of update information. if ( function_exists( 'delete_site_transient' ) ) {
delete_site_transient( 'update_core' );
} else {
delete_option( 'update_core' );
}
// If WP_DEFAULT_THEME doesn't exist, also include the latest core default theme.
if ( ! wp_get_theme( WP_DEFAULT_THEME )->exists() ) {
$core_default = WP_Theme::get_core_default_theme();
if ( $core_default ) {
$allowed_themes[ $core_default->get_stylesheet() ] = true;
}
}
if ( function_exists( 'clean_network_cache' ) ) {
clean_network_cache( $network_id );
} else {
wp_cache_delete( $network_id, 'networks' );
}
if ( ! is_multisite() ) {
$site_admins = array( $site_user->user_login );
$users = get_users(
array(
'fields' => array( 'user_login' ),
'role' => 'administrator',
)
);
if ( $users ) {
$core_default = WP_Theme::get_core_default_theme();
if ( $core_default ) {
$allowed_themes[ $core_default->get_stylesheet() ] = true;
}
}
if ( function_exists( 'clean_network_cache' ) ) {
clean_network_cache( $network_id );
} else {
wp_cache_delete( $network_id, 'networks' );
}
if ( ! is_multisite() ) {
$site_admins = array( $site_user->user_login );
$users = get_users(
array(
'fields' => array( 'user_login' ),
'role' => 'administrator',
)
);
if ( $users ) {
$theme_has_support[ $stylesheet ] = file_exists( $path );
return $theme_has_support[ $stylesheet ];
}
/** * Cleans the caches under the theme_json group. * * @since 6.2.0 */
function wp_clean_theme_json_cache() {
wp_cache_delete( 'wp_get_global_stylesheet', 'theme_json' );
wp_cache_delete( 'wp_get_global_styles_svg_filters', 'theme_json' );
wp_cache_delete( 'wp_get_global_settings_custom', 'theme_json' );
wp_cache_delete( 'wp_get_global_settings_theme', 'theme_json' );
wp_cache_delete( 'wp_get_global_styles_custom_css', 'theme_json' );
WP_Theme_JSON_Resolver::clean_cached_data();
}
/** * Returns the current theme's wanted patterns (slugs) to be * registered from Pattern Directory. * * @since 6.3.0 * * @return string[] */
return $theme_has_support[ $stylesheet ];
}
/** * Cleans the caches under the theme_json group. * * @since 6.2.0 */
function wp_clean_theme_json_cache() {
wp_cache_delete( 'wp_get_global_stylesheet', 'theme_json' );
wp_cache_delete( 'wp_get_global_styles_svg_filters', 'theme_json' );
wp_cache_delete( 'wp_get_global_settings_custom', 'theme_json' );
wp_cache_delete( 'wp_get_global_settings_theme', 'theme_json' );
wp_cache_delete( 'wp_get_global_styles_custom_css', 'theme_json' );
WP_Theme_JSON_Resolver::clean_cached_data();
}
/** * Returns the current theme's wanted patterns (slugs) to be * registered from Pattern Directory. * * @since 6.3.0 * * @return string[] */
do_action( 'add_user_to_blog', $user_id, $role, $blog_id );
clean_user_cache( $user_id );
wp_cache_delete( $blog_id . '_user_count', 'blog-details' );
restore_current_blog();
return true;
}
/** * Removes a user from a blog. * * Use the {@see 'remove_user_from_blog'} action to fire an event when * users are removed from a blog. * * Accepts an optional `$reassign` parameter, if you want to * reassign the user's blog posts to another user upon removal. * * @since MU (3.0.0) * * @global wpdb $wpdb WordPress database abstraction object. * * @param int $user_id ID of the user being removed. * @param int $blog_id Optional. ID of the blog the user is being removed from. Default 0. * @param int $reassign Optional. ID of the user to whom to reassign posts. Default 0. * @return true|WP_Error True on success or a WP_Error object if the user doesn't exist. */
if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
return;
}
$post = get_post( $post );
if ( ! $post ) {
return;
}
wp_cache_delete( $post->ID, 'posts' );
wp_cache_delete( $post->ID, 'post_meta' );
clean_object_term_cache( $post->ID, $post->post_type );
wp_cache_delete( 'wp_get_archives', 'general' );
/** * Fires immediately after the given post's cache is cleaned. * * @since 2.5.0 * * @param int $post_id Post ID. * @param WP_Post $post Post object. */
return;
}
$post = get_post( $post );
if ( ! $post ) {
return;
}
wp_cache_delete( $post->ID, 'posts' );
wp_cache_delete( $post->ID, 'post_meta' );
clean_object_term_cache( $post->ID, $post->post_type );
wp_cache_delete( 'wp_get_archives', 'general' );
/** * Fires immediately after the given post's cache is cleaned. * * @since 2.5.0 * * @param int $post_id Post ID. * @param WP_Post $post Post object. */
private function cache_get( $key ) {
return wp_cache_get( $key . '-' . $this->cache_hash, 'themes' );
}
/** * Clears the cache for the theme. * * @since 3.4.0 */
public function cache_delete() {
foreach ( array( 'theme', 'screenshot', 'headers', 'post_templates' ) as $key ) {
wp_cache_delete( $key . '-' . $this->cache_hash, 'themes' );
}
$this->template = null;
$this->textdomain_loaded = null;
$this->theme_root_uri = null;
$this->parent = null;
$this->errors = null;
$this->headers_sanitized = null;
$this->name_translated = null;
$this->block_theme = null;
$this->headers = array();
$this->__construct( $this->stylesheet, $this->theme_root );
}
return wp_cache_get( $key . '-' . $this->cache_hash, 'themes' );
}
/** * Clears the cache for the theme. * * @since 3.4.0 */
public function cache_delete() {
foreach ( array( 'theme', 'screenshot', 'headers', 'post_templates' ) as $key ) {
wp_cache_delete( $key . '-' . $this->cache_hash, 'themes' );
}
$this->template = null;
$this->textdomain_loaded = null;
$this->theme_root_uri = null;
$this->parent = null;
$this->errors = null;
$this->headers_sanitized = null;
$this->name_translated = null;
$this->block_theme = null;
$this->headers = array();
$this->__construct( $this->stylesheet, $this->theme_root );
}
$blog_id = (int) $blog_id;
$all = $get_all ? '' : 'short';
$details = wp_cache_get( $blog_id . $all, 'blog-details' );
if ( $details ) {
if ( ! is_object( $details ) ) {
if ( -1 == $details ) {
return false;
} else {
// Clear old pre-serialized objects. Cache clients do better with that. wp_cache_delete( $blog_id . $all, 'blog-details' );
unset( $details );
}
} else {
return $details;
}
}
// Try the other cache. if ( $get_all ) {
$details = wp_cache_get( $blog_id . 'short', 'blog-details' );
} else {
$all = $get_all ? '' : 'short';
$details = wp_cache_get( $blog_id . $all, 'blog-details' );
if ( $details ) {
if ( ! is_object( $details ) ) {
if ( -1 == $details ) {
return false;
} else {
// Clear old pre-serialized objects. Cache clients do better with that. wp_cache_delete( $blog_id . $all, 'blog-details' );
unset( $details );
}
} else {
return $details;
}
}
// Try the other cache. if ( $get_all ) {
$details = wp_cache_get( $blog_id . 'short', 'blog-details' );
} else {
return $value;
}
/** * Deletes the bookmark cache. * * @since 2.7.0 * * @param int $bookmark_id Bookmark ID. */
function clean_bookmark_cache( $bookmark_id ) {
wp_cache_delete( $bookmark_id, 'bookmark' );
wp_cache_delete( 'get_bookmarks', 'bookmark' );
clean_object_term_cache( $bookmark_id, 'link' );
}
}
/** * Deletes the bookmark cache. * * @since 2.7.0 * * @param int $bookmark_id Bookmark ID. */
function clean_bookmark_cache( $bookmark_id ) {
wp_cache_delete( $bookmark_id, 'bookmark' );
wp_cache_delete( 'get_bookmarks', 'bookmark' );
clean_object_term_cache( $bookmark_id, 'link' );
}
(object) array(
'blog_id' => $blog_id,
'domain' => null,
'path' => null,
)
);
}
$blog_id = $blog->blog_id;
$domain_path_key = md5( $blog->domain . $blog->path );
wp_cache_delete( $blog_id, 'sites' );
wp_cache_delete( $blog_id, 'site-details' );
wp_cache_delete( $blog_id, 'blog-details' );
wp_cache_delete( $blog_id . 'short', 'blog-details' );
wp_cache_delete( $domain_path_key, 'blog-lookup' );
wp_cache_delete( $domain_path_key, 'blog-id-cache' );
wp_cache_delete( $blog_id, 'blog_meta' );
/** * Fires immediately after a site has been removed from the object cache. * * @since 4.6.0 * * @param string $id Site ID as a numeric string. * @param WP_Site $blog Site object. * @param string $domain_path_key md5 hash of domain and path. */
'blog_id' => $blog_id,
'domain' => null,
'path' => null,
)
);
}
$blog_id = $blog->blog_id;
$domain_path_key = md5( $blog->domain . $blog->path );
wp_cache_delete( $blog_id, 'sites' );
wp_cache_delete( $blog_id, 'site-details' );
wp_cache_delete( $blog_id, 'blog-details' );
wp_cache_delete( $blog_id . 'short', 'blog-details' );
wp_cache_delete( $domain_path_key, 'blog-lookup' );
wp_cache_delete( $domain_path_key, 'blog-id-cache' );
wp_cache_delete( $blog_id, 'blog_meta' );
/** * Fires immediately after a site has been removed from the object cache. * * @since 4.6.0 * * @param string $id Site ID as a numeric string. * @param WP_Site $blog Site object. * @param string $domain_path_key md5 hash of domain and path. */
function wp_cache_delete_multiple( array $keys, $group = '' ) {
$values = array();
foreach ( $keys as $key ) {
$values[ $key ] = wp_cache_delete( $key, $group );
}
return $values;
}
endif;
if ( ! function_exists( 'wp_cache_flush_runtime' ) ) :
/** * Removes all cache items from the in-memory runtime cache. * * Compat function to mimic wp_cache_flush_runtime(). * * @ignore * @since 6.0.0 * * @see wp_cache_flush_runtime() * * @return bool True on success, false on failure. */
$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. */
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. */
$values[] = $wpdb->prepare( '(%d, %d, %d)', $object_id, $tt_id, ++$term_order );
}
}
if ( $values ) {
if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . implode( ',', $values ) . ' ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)' ) ) {
return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database.' ), $wpdb->last_error );
}
}
}
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
wp_cache_set_terms_last_changed();
/** * Fires after an object's terms have been set. * * @since 2.8.0 * * @param int $object_id Object ID. * @param array $terms An array of object term IDs or slugs. * @param array $tt_ids An array of term taxonomy IDs. * @param string $taxonomy Taxonomy slug. * @param bool $append Whether to append new terms to the old terms. * @param array $old_tt_ids Old array of term taxonomy IDs. */
}
}
if ( $values ) {
if ( false === $wpdb->query( "INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id, term_order) VALUES " . implode( ',', $values ) . ' ON DUPLICATE KEY UPDATE term_order = VALUES(term_order)' ) ) {
return new WP_Error( 'db_insert_error', __( 'Could not insert term relationship into the database.' ), $wpdb->last_error );
}
}
}
wp_cache_delete( $object_id, $taxonomy . '_relationships' );
wp_cache_set_terms_last_changed();
/** * Fires after an object's terms have been set. * * @since 2.8.0 * * @param int $object_id Object ID. * @param array $terms An array of object term IDs or slugs. * @param array $tt_ids An array of term taxonomy IDs. * @param string $taxonomy Taxonomy slug. * @param bool $append Whether to append new terms to the old terms. * @param array $old_tt_ids Old array of term taxonomy IDs. */
$cur = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
if ( $cur && $cur->umeta_id )
do_action( 'delete_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );
if ( ! empty($meta_value) )
$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s AND meta_value = %s", $user_id, $meta_key, $meta_value) );
else
$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
clean_user_cache( $user_id );
wp_cache_delete( $user_id, 'user_meta' );
if ( $cur && $cur->umeta_id )
do_action( 'deleted_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );
return true;
}
/** * Retrieve user metadata. * * If $user_id is not a number, then the function will fail over with a 'false' * boolean return value. Other returned values depend on whether there is only * one item to be returned, which be that single item type. If there is more * than one metadata value, then it will be list of metadata values. * * @since 2.0.0 * @deprecated 3.0.0 Use get_user_meta() * @see get_user_meta() * * @param int $user_id User ID * @param string $meta_key Optional. Metadata key. Default empty. * @return mixed */
if ( $cur && $cur->umeta_id )
do_action( 'delete_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );
if ( ! empty($meta_value) )
$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s AND meta_value = %s", $user_id, $meta_key, $meta_value) );
else
$wpdb->query( $wpdb->prepare("DELETE FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
clean_user_cache( $user_id );
wp_cache_delete( $user_id, 'user_meta' );
if ( $cur && $cur->umeta_id )
do_action( 'deleted_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );
return true;
}
/** * Retrieve user metadata. * * If $user_id is not a number, then the function will fail over with a 'false' * boolean return value. Other returned values depend on whether there is only * one item to be returned, which be that single item type. If there is more * than one metadata value, then it will be list of metadata values. * * @since 2.0.0 * @deprecated 3.0.0 Use get_user_meta() * @see get_user_meta() * * @param int $user_id User ID * @param string $meta_key Optional. Metadata key. Default empty. * @return mixed */
function clean_user_cache( $user ) {
if ( is_numeric( $user ) ) {
$user = new WP_User( $user );
}
if ( ! $user->exists() ) {
return;
}
wp_cache_delete( $user->ID, 'users' );
wp_cache_delete( $user->user_login, 'userlogins' );
wp_cache_delete( $user->user_nicename, 'userslugs' );
if ( ! empty( $user->user_email ) ) {
wp_cache_delete( $user->user_email, 'useremail' );
}
wp_cache_delete( $user->ID, 'user_meta' );
wp_cache_set_users_last_changed();
/** * Fires immediately after the given user's cache is cleaned. * * @since 4.4.0 * * @param int $user_id User ID. * @param WP_User $user User object. */
/**
* Clears the plugins cache used by get_plugins() and by default, the plugin updates cache.
*
* @since 3.7.0
*
* @param bool $clear_update_cache Whether to clear the plugin updates cache. Default true.
*/
function wp_clean_plugins_cache( $clear_update_cache = true ) {
if ( $clear_update_cache ) {
delete_site_transient( 'update_plugins' );
}
wp_cache_delete( 'plugins', 'plugins' );
}
/** * Loads a given plugin attempt to generate errors. * * @since 3.0.0 * @since 4.4.0 Function was moved into the `wp-admin/includes/plugin.php` file. * * @param string $plugin Path to the plugin file relative to the plugins directory. */
function plugin_sandbox_scrape( $plugin ) {
function wp_clean_plugins_cache( $clear_update_cache = true ) {
if ( $clear_update_cache ) {
delete_site_transient( 'update_plugins' );
}
wp_cache_delete( 'plugins', 'plugins' );
}
/** * Loads a given plugin attempt to generate errors. * * @since 3.0.0 * @since 4.4.0 Function was moved into the `wp-admin/includes/plugin.php` file. * * @param string $plugin Path to the plugin file relative to the plugins directory. */
function plugin_sandbox_scrape( $plugin ) {