Class Phalcon\Cache\Backend\Apc

extends abstract class Phalcon\Cache\Backend

implements Phalcon\Cache\BackendInterface

Source on GitHub

Allows to cache output fragments, PHP data and raw data using an APC backend

<?php
use Phalcon\Cache\Backend\Apc;
use Phalcon\Cache\Frontend\Data as FrontData;
// Cache data for 2 days
$frontCache = new FrontData(
    [
        "lifetime" => 172800,
    ]
);
$cache = new Apc(
    $frontCache,
    [
        "prefix" => "app-data",
    ]
);
// Cache arbitrary data
$cache->save("my-data", [1, 2, 3, 4, 5]);
// Get data
$data = $cache->get("my-data");

Methods

public get (mixed $keyName, [mixed $lifetime])

Returns a cached content

public save ([string | int $keyName], [string $content], [int $lifetime], [boolean $stopBuffer])

Stores cached content into the APC backend and stops the frontend

public increment ([string $keyName], [mixed $value])

Increment of a given key, by number $value

public decrement ([string $keyName], [mixed $value])

Decrement of a given key, by number $value

public delete (mixed $keyName)

Deletes a value from the cache by its key

public queryKeys ([mixed $prefix])

Query the existing cached keys.

<?php
$cache->save("users-ids", [1, 2, 3]);
$cache->save("projects-ids", [4, 5, 6]);
var_dump($cache->queryKeys("users")); // ["users-ids"]

public exists ([string | int $keyName], [int $lifetime])

Checks if cache exists and it hasn’t expired

public flush ()

Immediately invalidates all existing items.

<?php
use Phalcon\Cache\Backend\Apc;
$cache = new Apc($frontCache, ["prefix" => "app-data"]);
$cache->save("my-data", [1, 2, 3, 4, 5]);
// 'my-data' and all other used keys are deleted
$cache->flush();

public getFrontend () inherited from Phalcon\Cache\Backend

…

public setFrontend (mixed $frontend) inherited from Phalcon\Cache\Backend

…

public getOptions () inherited from Phalcon\Cache\Backend

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public setOptions (mixed $options) inherited from Phalcon\Cache\Backend

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public getLastKey () inherited from Phalcon\Cache\Backend

…

public setLastKey (mixed $lastKey) inherited from Phalcon\Cache\Backend

…

public __construct (Phalcon\Cache\FrontendInterface $frontend, [array $options]) inherited from Phalcon\Cache\Backend

Phalcon\Cache\Backend constructor

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 ([mixed $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