public static function getOrder($order = null)
    {
        switch ($order) {
            case self::ENVIRONMENT:
                self::$_breakChain = true;
                $languages         = self::getEnvironment() + self::getBrowser() + self::getDefault();
                break;

            case self::ZFDEFAULT:
                self::$_breakChain = true;
                $languages         = self::getDefault() + self::getEnvironment() + self::getBrowser();
                break;

            default:
                self::$_breakChain = true;
                $languages         = self::getBrowser() + self::getEnvironment() + self::getDefault();
                break;
        }

        return $languages;
    }