Cml\Cache\File::getFileName PHP Метод

    private function getFileName($key)
    {
        $md5Key = md5($this->conf['prefix'] . $key);
        $dir = $this->conf['CACHE_PATH'] . substr($key, 0, strrpos($key, '/')) . DIRECTORY_SEPARATOR;
        $dir .= substr($md5Key, 0, 2) . DIRECTORY_SEPARATOR . substr($md5Key, 2, 2);
        is_dir($dir) || mkdir($dir, 0700, true);
        return $dir . DIRECTORY_SEPARATOR . $md5Key . '.php';
    }