NullStore.php

<?php
/**
 * Null (fake) Store.
 *
 * @package SugiPHP.Cache
 * @author  Plamen Popov <tzappa@gmail.com>
 * @license http://opensource.org/licenses/mit-license.php (MIT License)
 */

namespace SugiPHP\Cache;

/**
 * Null Store
 * This is actually a fake store. It is used to check your code is not breaking
 * if there is no other storages available, or if there is a problem with existing
 * ones, e.g. no space left on the server or there is no connection with Memcached.
 * Other use is when you wish your code to work without any caching for a while.
 */
class NullStore implements StoreInterface
{
    /**
     * {@inheritdoc}
     */
    public function add($key, $value, $ttl = 0)
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function set($key, $value, $ttl = 0)
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function get($key)
    {
        return null;
    }

    /**
     * {@inheritdoc}
     */
    public function has($key)
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        //
    }

    /**
     * {@inheritdoc}
     */
    public function flush()
    {
        //
    }
}