Amp\Artax\Uri::decodeUnreservedCharacters PHP Method

    private function decodeUnreservedCharacters($str)
    {
        $str = rawurldecode($str);
        $str = rawurlencode($str);
        $encoded = array('%2F', '%3A', '%40');
        $decoded = array('/', ':', '@');
        return str_replace($encoded, $decoded, $str);
    }