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: 

<?php

/**
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines http://www.simplemachines.org
 * @copyright 2019 Simple Machines and individual contributors
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 RC1
 */

if (!defined('SMF'))
    die('Hacking attempt...');

/**
 * Our Cache API class
 *
 * @package cacheAPI
 */
class apcu_cache extends cache_api
{
    /**
     * {@inheritDoc}
     */
    public function isSupported($test = false)
    {
        $supported = function_exists('apcu_fetch') && function_exists('apcu_store');

        if ($test)
            return $supported;
        return parent::isSupported() && $supported;
    }

    /**
     * {@inheritDoc}
     */
    public function getData($key, $ttl = null)
    {
        $key = $this->prefix . strtr($key, ':/', '-_');

        return apcu_fetch($key . 'smf');
    }

    /**
     * {@inheritDoc}
     */
    public function putData($key, $value, $ttl = null)
    {
        $key = $this->prefix . strtr($key, ':/', '-_');

        // An extended key is needed to counteract a bug in APC.
        if ($value === null)
            return apcu_delete($key . 'smf');
        else
            return apcu_store($key . 'smf', $value, $ttl);
    }

    /**
     * {@inheritDoc}
     */
    public function cleanCache($type = '')
    {
        $this->invalidateCache();
        return apcu_clear_cache();
    }

    /**
     * {@inheritDoc}
     */
    public function getVersion()
    {
        return phpversion('apcu');
    }
}

?>