IRI::set_iri( string $iri, $clear_cache = false ): bool

714    public function set_iri($iri, $clear_cache = false)715    {716        static $cache;717        if ($clear_cache) {718            $cache = null;719            return;720        }721        if (!$cache) {722            $cache = [];723        }724 725        if ($iri === null) {726            return true;727        } elseif (isset($cache[$iri])) {728            [729                $this->scheme,730                $this->iuserinfo,731                $this->ihost,732                $this->port,733                $this->ipath,734                $this->iquery,735                $this->ifragment,736                $return737            ] = $cache[$iri];738 739            return $return;740        }741 742        $parsed = $this->parse_iri((string) $iri);743        if (!$parsed) {744            return false;745        }746 747        $return = $this->set_scheme($parsed['scheme'])748            && $this->set_authority($parsed['authority'])749            && $this->set_path($parsed['path'])750            && $this->set_query($parsed['query'])751            && $this->set_fragment($parsed['fragment']);752 753        $cache[$iri] = [754            $this->scheme,755            $this->iuserinfo,756            $this->ihost,757            $this->port,758            $this->ipath,759            $this->iquery,760            $this->ifragment,761            $return762        ];763 764        return $return;765    }