public NullBackend::setMultiple(array $items = array()) Store multiple items in the persistent cache. Parameters array $items: An array of cache items, keyed by cid. In the form: $items = array( $cid => array( // Required, will be automatically serialized if not a string. 'data' => $data, // Optional, defaults to CacheBackendInterface::CACHE_PERMANENT. 'expire' => CacheBackendInterface::CACHE_PERMANENT, // (optional) The cache tags for this item, se

public NullBackend::set($cid, $data, $expire = Cache::PERMANENT, array $tags = array()) Stores data in the persistent cache. Core cache implementations set the created time on cache item with microtime(TRUE) rather than REQUEST_TIME_FLOAT, because the created time of cache items should match when they are created, not when the request started. Apart from being more accurate, this increases the chance an item will legitimately be considered valid. Parameters string $cid: The cache ID of the dat

public NullBackend::removeBin() Remove a cache bin. Overrides CacheBackendInterface::removeBin File core/lib/Drupal/Core/Cache/NullBackend.php, line 90 Class NullBackend Defines a stub cache implementation. Namespace Drupal\Core\Cache Code public function removeBin() { }

public NullBackend::invalidateMultiple(array $cids) Marks cache items as invalid. Invalid items may be returned in later calls to get(), if the $allow_invalid argument is TRUE. Parameters string[] $cids: An array of cache IDs to invalidate. Overrides CacheBackendInterface::invalidateMultiple See also \Drupal\Core\Cache\CacheBackendInterface::deleteMultiple() \Drupal\Core\Cache\CacheBackendInterface::invalidate() \Drupal\Core\Cache\CacheBackendInterface::invalidateAll() File core/lib/Drupal/Co

public NullBackend::invalidateAll() Marks all cache items as invalid. Invalid items may be returned in later calls to get(), if the $allow_invalid argument is TRUE. Overrides CacheBackendInterface::invalidateAll See also \Drupal\Core\Cache\CacheBackendInterface::deleteAll() \Drupal\Core\Cache\CacheBackendInterface::invalidate() \Drupal\Core\Cache\CacheBackendInterface::invalidateMultiple() File core/lib/Drupal/Core/Cache/NullBackend.php, line 80 Class NullBackend Defines a stub cache impl

public NullBackend::invalidate($cid) Marks a cache item as invalid. Invalid items may be returned in later calls to get(), if the $allow_invalid argument is TRUE. Parameters string $cid: The cache ID to invalidate. Overrides CacheBackendInterface::invalidate See also \Drupal\Core\Cache\CacheBackendInterface::delete() \Drupal\Core\Cache\CacheBackendInterface::invalidateMultiple() \Drupal\Core\Cache\CacheBackendInterface::invalidateAll() File core/lib/Drupal/Core/Cache/NullBackend.php, line 70

public NullBackend::getMultiple(&$cids, $allow_invalid = FALSE) Returns data from the persistent cache when given an array of cache IDs. Parameters array $cids: An array of cache IDs for the data to retrieve. This is passed by reference, and will have the IDs successfully returned from cache removed. bool $allow_invalid: (optional) If TRUE, cache items may be returned even if they have expired or been invalidated. Such items may sometimes be preferred, if the alternative is recalculating t

public NullBackend::get($cid, $allow_invalid = FALSE) Returns data from the persistent cache. Parameters string $cid: The cache ID of the data to retrieve. bool $allow_invalid: (optional) If TRUE, a cache item may be returned even if it is expired or has been invalidated. Such items may sometimes be preferred, if the alternative is recalculating the value stored in the cache, especially if another concurrent request is already recalculating the same value. The "valid" property of the returned

public NullBackend::garbageCollection() Performs garbage collection on a cache bin. The backend may choose to delete expired or invalidated items. Overrides CacheBackendInterface::garbageCollection File core/lib/Drupal/Core/Cache/NullBackend.php, line 85 Class NullBackend Defines a stub cache implementation. Namespace Drupal\Core\Cache Code public function garbageCollection() { }

public NullBackend::deleteMultiple(array $cids) Deletes multiple items from the cache. If the cache items are being deleted because they are no longer "fresh", you may consider using invalidateMultiple() instead. This allows callers to retrieve the invalid items by calling get() with $allow_invalid set to TRUE. In some cases an invalid item may be acceptable rather than having to rebuild the cache. Parameters array $cids: An array of cache IDs to delete. Overrides CacheBackendInterface::delete