Namespaces

• ICanBoogie
  • Storage
    • Codec
    • Storage

Classes

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

Interfaces

• Cache
• Codec
• Storage

  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99 100 101 102 103 104 105 106 107 108 109 110 111 

<?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 Storage\ArrayAccess;

    /**
     * Whether the APC feature is available.
     *
     * @return bool
     *
     * @codeCoverageIgnore
     */
    static public function is_available()
    {
        return (extension_loaded('apc') || extension_loaded('apcu')) && 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 exists($key)
    {
        return apcu_exists($this->prefix . $key);
    }

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

        return $success ? $rc : null;
    }

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

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

    /**
     * @inheritdoc
     */
    public function clear()
    {
        apcu_delete($this->create_internal_iterator());
    }

    /**
     * @inheritdoc
     */
    public function getIterator()
    {
        $prefix_length = strlen($this->prefix);

        foreach ($this->create_internal_iterator() as $key => $dummy)
        {
            yield substr($key, $prefix_length);
        }
    }

    /**
     * Creates internal iterator.
     *
     * @return \APCUIterator
     */
    private function create_internal_iterator()
    {
        return new \APCUIterator('/^' . preg_quote($this->prefix) . '/', APC_ITER_NONE);
    }
}