ArrayStore.php

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

namespace SugiPHP\Cache;

/**
 * Array Store
 * Main purpose of this class is to be used in unit testing.
 * Note that no expiration time is implemented! Store will be flushed after the script is over.
 */
class ArrayStore implements StoreInterface
{
    protected $store = array();

    /**
     * {@inheritdoc}
     */
    public function add($key, $value, $ttl = 0)
    {
        if ($this->has($key)) {
            return false;
        }
        $this->store[$key] = $value;

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function set($key, $value, $ttl = 0)
    {
        $this->store[$key] = $value;

        return true;
    }

    /**
     * {@inheritdoc}
     */
    public function get($key)
    {
        return isset($this->store[$key]) ? $this->store[$key] : null;
    }

    /**
     * {@inheritdoc}
     */
    public function has($key)
    {
        return isset($this->store[$key]);
    }

    /**
     * {@inheritdoc}
     */
    public function delete($key)
    {
        unset($this->store[$key]);
    }

    /**
     * {@inheritdoc}
     */
    public function flush()
    {
        $this->store = array();
    }
}