Hybrid_Endpoint::__construct PHP Метод

    public function __construct($request = null)
    {
        if (is_null($request)) {
            // Fix a strange behavior when some provider call back ha endpoint
            // with /index.php?hauth.done={provider}?{args}...
            // >here we need to parse $_SERVER[QUERY_STRING]
            $request = $_REQUEST;
            if (isset($_SERVER["QUERY_STRING"]) && strrpos($_SERVER["QUERY_STRING"], '?')) {
                $_SERVER["QUERY_STRING"] = str_replace("?", "&", $_SERVER["QUERY_STRING"]);
                parse_str($_SERVER["QUERY_STRING"], $request);
            }
        }
        // Setup request variable
        $this->request = $request;
        // If openid_policy requested, we return our policy document
        if (isset($this->request["get"]) && $this->request["get"] == "openid_policy") {
            $this->processOpenidPolicy();
        }
        // If openid_xrds requested, we return our XRDS document
        if (isset($this->request["get"]) && $this->request["get"] == "openid_xrds") {
            $this->processOpenidXRDS();
        }
        // If we get a hauth.start
        if (isset($this->request["hauth_start"]) && $this->request["hauth_start"]) {
            $this->processAuthStart();
        } elseif (isset($this->request["hauth_done"]) && $this->request["hauth_done"]) {
            $this->processAuthDone();
        } else {
            $this->processOpenidRealm();
        }
    }