set_query example

        $parsed = $this->parse_iri((string) $iri);
        if (!$parsed)
        {
            return false;
        }

        $return = $this->set_scheme($parsed['scheme'])
            && $this->set_authority($parsed['authority'])
            && $this->set_path($parsed['path'])
            && $this->set_query($parsed['query'])
            && $this->set_fragment($parsed['fragment']);

        $cache[$iri] = array($this->scheme,
                             $this->iuserinfo,
                             $this->ihost,
                             $this->port,
                             $this->ipath,
                             $this->iquery,
                             $this->ifragment,
                             $return);
        return $return;
    }

$this->iquery,
                 $this->ifragment,
                 $return) = $cache[$iri];
            return $return;
        }

        $parsed = $this->parse_iri($iri);

        $return = $this->set_scheme($parsed['scheme'])
            && $this->set_authority($parsed['authority'])
            && $this->set_path($parsed['path'])
            && $this->set_query($parsed['query'])
            && $this->set_fragment($parsed['fragment']);

        $cache[$iri] = array($this->scheme,
                             $this->iuserinfo,
                             $this->ihost,
                             $this->port,
                             $this->ipath,
                             $this->iquery,
                             $this->ifragment,
                             $return);
        return $return;
    }