Amp\Artax\Uri::decodeReservedSubDelimiters PHP Method

    private function decodeReservedSubDelimiters($str)
    {
        $encoded = array('%21', '%24', '%26', '%27', '%28', '%29', '%2A', '%2B', '%2C', '%3B', '%3D');
        $decoded = array('!', '$', '&', "'", '(', ')', '*', '+', ',', ';', '=');
        return str_replace($encoded, $decoded, $str);
    }