# Class **Phalcon\Cache\Frontend\Data**[](# "永久链接至标题") *implements*[*Phalcon\Cache\FrontendInterface*](#) Allows to cache native PHP data in a serialized form ~~~ <?php <?php // Cache the files for 2 days using a Data frontend $frontCache = new \Phalcon\Cache\Frontend\Data(array( "lifetime" => 172800 )); // Create the component that will cache "Data" to a "File" backend // Set the cache file directory - important to keep the "/" at the end of // of the value for the folder $cache = new \Phalcon\Cache\Backend\File($frontCache, array( "cacheDir" => "../app/cache/" )); // Try to get cached records $cacheKey = 'robots_order_id.cache'; $robots = $cache->get($cacheKey); if ($robots === null) { // $robots is null due to cache expiration or data does not exist // Make the database call and populate the variable $robots = Robots::find(array("order" => "id")); // Store it in the cache $cache->save($cacheKey, $robots); } // Use $robots :) foreach ($robots as $robot) { echo $robot->name, "\n"; } ~~~ ### Methods[](# "永久链接至标题") public **__construct** ([*array* $frontendOptions]) Phalcon\Cache\Frontend\Data constructor public **getLifetime** () Returns the cache lifetime public **isBuffering** () Check whether if frontend is buffering output public **start** () Starts output frontend. Actually, does nothing public *string***getContent** () Returns output cached content public **stop** () Stops output frontend public **beforeStore** (*unknown* $data) Serializes data before storing them public **afterRetrieve** (*unknown* $data) Unserializes data after retrieval | - [索引](# "总目录") - [下一页](# "Class Phalcon\Cache\Frontend\Igbinary") | - [上一页](# "Class Phalcon\Cache\Frontend\Base64") | - [API Indice](#) »