<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Cache\Engine;
use Cake\Cache\CacheEngine;
/**
* Null cache engine, all operations appear to work, but do nothing.
*
* This is used internally for when Cache::disable() has been called.
*/
class NullEngine extends CacheEngine
{
/**
* {@inheritDoc}
*/
public function init(array $config = [])
{
return true;
}
/**
* {@inheritDoc}
*/
public function gc($expires = null)
{
}
/**
* {@inheritDoc}
*/
public function write($key, $value)
{
return true;
}
/**
* {@inheritDoc}
*/
public function read($key)
{
return false;
}
/**
* {@inheritDoc}
*/
public function readMany($keys)
{
return [];
}
/**
* {@inheritDoc}
*/
public function increment($key, $offset = 1)
{
return true;
}
/**
* {@inheritDoc}
*/
public function decrement($key, $offset = 1)
{
return true;
}
/**
* {@inheritDoc}
*/
public function delete($key)
{
return true;
}
/**
* {@inheritDoc}
*/
public function deleteMany($keys)
{
return [];
}
/**
* {@inheritDoc}
*/
public function clear($check)
{
return false;
}
/**
* {@inheritDoc}
*/
public function clearGroup($group)
{
return false;
}
}