Cloudinary::translate_if PHP Method

    private static function translate_if($source)
    {
        if (isset(self::$IF_OPERATORS[$source[0]])) {
            return self::$IF_OPERATORS[$source[0]];
        } elseif (isset(self::$IF_PARAMETERS[$source[0]])) {
            return self::$IF_PARAMETERS[$source[0]];
        } else {
            return $source[0];
        }
    }