Namespaces

• ICanBoogie
  • Storage

Classes

• APCStorage
• CacheCollection
• FileStorage
• FileStorageIterator
• RedisStorage
• RunTimeStorage
• StorageCollection

Interfaces

• Cache
• Storage

Traits

• ArrayAccessTrait

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<?php

/*
 * This file is part of the ICanBoogie package.
 *
 * (c) Olivier Laviale <olivier.laviale@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace ICanBoogie\Storage;

/**
 * A storage using APC.
 */
class APCStorage implements Storage, \ArrayAccess
{
    use ArrayAccessTrait;

    /**
     * Whether the APC feature is available.
     *
     * @return bool
     *
     * @codeCoverageIgnore
     */
    static public function is_available()
    {
        return extension_loaded('apc') && ini_get('apc.enabled');
    }

    /**
     * @var string
     */
    private $prefix;

    /**
     * @param string|null $prefix
     */
    public function __construct($prefix = null)
    {
        $this->prefix = $prefix ?: substr(sha1($_SERVER['DOCUMENT_ROOT']), 0, 8);
    }

    /**
     * @inheritdoc
     */
    public function store($key, $data, $ttl = 0)
    {
        apc_store($this->prefix . $key, $data, $ttl);
    }

    /**
     * @inheritdoc
     */
    public function retrieve($key)
    {
        $rc = apc_fetch($this->prefix . $key, $success);

        return $success ? $rc : null;
    }

    /**
     * @inheritdoc
     */
    public function eliminate($key)
    {
        apc_delete($this->prefix . $key);
    }

    /**
     * @inheritdoc
     */
    public function clear()
    {
        $iterator = new \APCIterator('user', '/^' . preg_quote($this->prefix) . '/', APC_ITER_NONE);

        foreach ($iterator as $key => $dummy)
        {
            apc_delete($key);
        }
    }

    /**
     * @inheritdoc
     */
    public function exists($key)
    {
        return apc_exists($this->prefix . $key);
    }
}