Class **Phalcon\\Cache\\Backend\\Mongo** ======================================== *extends* abstract class :doc:`Phalcon\\Cache\\Backend ` *implements* :doc:`Phalcon\\Cache\\BackendInterface ` .. role:: raw-html(raw) :format: html :raw-html:`Source on GitHub` Allows to cache output fragments, PHP data or raw data to a MongoDb backend .. code-block:: php 172800, ] ); // Create a MongoDB cache $cache = new Mongo( $frontCache, [ "server" => "mongodb://localhost", "db" => "caches", "collection" => "images", ] ); // Cache arbitrary data $cache->save( "my-data", file_get_contents("some-image.jpg") ); // Get data $data = $cache->get("my-data"); Methods ------- public **__construct** (:doc:`Phalcon\\Cache\\FrontendInterface ` $frontend, [*array* $options]) Phalcon\\Cache\\Backend\\Mongo constructor final protected *MongoCollection* **_getCollection** () Returns a MongoDb collection based on the backend parameters public **get** (*mixed* $keyName, [*mixed* $lifetime]) Returns a cached content public **save** ([*int* | *string* $keyName], [*string* $content], [*int* $lifetime], [*boolean* $stopBuffer]) Stores cached content into the file backend and stops the frontend public *boolean* **delete** (*int* | *string* $keyName) Deletes a value from the cache by its key public **queryKeys** ([*mixed* $prefix]) Query the existing cached keys. .. code-block:: php save("users-ids", [1, 2, 3]); $cache->save("projects-ids", [4, 5, 6]); var_dump($cache->queryKeys("users")); // ["users-ids"] public **exists** ([*string* $keyName], [*int* $lifetime]) Checks if cache exists and it isn't expired public *collection->remove(...)* **gc** () gc public **increment** (*int* | *string* $keyName, [*mixed* $value]) Increment of a given key by $value public **decrement** (*int* | *string* $keyName, [*mixed* $value]) Decrement of a given key by $value public **flush** () Immediately invalidates all existing items. public **getFrontend** () inherited from :doc:`Phalcon\\Cache\\Backend ` ... public **setFrontend** (*mixed* $frontend) inherited from :doc:`Phalcon\\Cache\\Backend ` ... public **getOptions** () inherited from :doc:`Phalcon\\Cache\\Backend ` ... public **setOptions** (*mixed* $options) inherited from :doc:`Phalcon\\Cache\\Backend ` ... public **getLastKey** () inherited from :doc:`Phalcon\\Cache\\Backend ` ... public **setLastKey** (*mixed* $lastKey) inherited from :doc:`Phalcon\\Cache\\Backend ` ... public *mixed* **start** (*int* | *string* $keyName, [*int* $lifetime]) inherited from :doc:`Phalcon\\Cache\\Backend ` Starts a cache. The keyname allows to identify the created fragment public **stop** ([*mixed* $stopBuffer]) inherited from :doc:`Phalcon\\Cache\\Backend ` Stops the frontend without store any cached content public **isFresh** () inherited from :doc:`Phalcon\\Cache\\Backend ` Checks whether the last cache is fresh or cached public **isStarted** () inherited from :doc:`Phalcon\\Cache\\Backend ` Checks whether the cache has starting buffering or not public *int* **getLifetime** () inherited from :doc:`Phalcon\\Cache\\Backend ` Gets the last lifetime set