Class Phalcon\Cache\Backend\File¶
extends abstract class Phalcon\Cache\Backend
implements Phalcon\Cache\BackendInterface
Allows to cache output fragments using a file backend
<?php
//Cache the file for 2 days
$frontendOptions = array(
'lifetime' => 172800
);
//Create a output cache
$frontCache = \Phalcon\Cache\Frontend\Output($frontOptions);
//Set the cache directory
$backendOptions = array(
'cacheDir' => '../app/cache/'
);
//Create the File backend
$cache = new \Phalcon\Cache\Backend\File($frontCache, $backendOptions);
$content = $cache->start('my-cache');
if ($content === null) {
echo '<h1>', time(), '</h1>';
$cache->save();
} else {
echo $content;
}
Methods¶
public __construct (Phalcon\Cache\FrontendInterface $frontend, [array $options])
Phalcon\Cache\Backend\File constructor
public mixed get (int|string $keyName, [int $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 array queryKeys ([string|int $prefix])
Query the existing cached keys
public boolean exists ([string|int $keyName], [int $lifetime])
Checks if cache exists and it isn’t expired
public mixed increment ([string|int $keyName], [int $value])
Increment of a given key, by number $value
public mixed decrement ([string|int $keyName], [int $value])
Decrement of a given key, by number $value
public flush ()
Immediately invalidates all existing items.
public getKey (unknown $key)
Return a file-system safe identifier for a given key
public this useSafeKey (unknown $useSafeKey)
Set whether to use the safekey or not
public getFrontend () inherited from Phalcon\Cache\Backend
...
public setFrontend (unknown $frontend) inherited from Phalcon\Cache\Backend
...
public getOptions () inherited from Phalcon\Cache\Backend
...
public setOptions (unknown $options) inherited from Phalcon\Cache\Backend
...
public getLastKey () inherited from Phalcon\Cache\Backend
...
public setLastKey (unknown $lastKey) inherited from Phalcon\Cache\Backend
...
public mixed start (int|string $keyName, [int $lifetime]) inherited from Phalcon\Cache\Backend
Starts a cache. The keyname allows to identify the created fragment
public stop ([unknown $stopBuffer]) inherited from Phalcon\Cache\Backend
Stops the frontend without store any cached content
public isFresh () inherited from Phalcon\Cache\Backend
Checks whether the last cache is fresh or cached
public isStarted () inherited from Phalcon\Cache\Backend
Checks whether the cache has starting buffering or not
public int getLifetime () inherited from Phalcon\Cache\Backend
Gets the last lifetime set