public function checkPaymentParams($uid = NULL){
        if($uid == NULL){

            if(isset($_GET['auctionid'], $_GET['uid'])){

                $auctionid = $_GET['auctionid'];
                $auctionauthkey = $this->getSettings($auctionid, 'authkey');
                if($auctionauthkey != false && $auctionauthkey == $_GET['uid']){

                    $post_title = $this->getSettings($auctionid, 'gettitle');
                    $image1 = $this->get_post_meta($auctionid, 'wdm-image-1', true);
                    $description = $this->getSettings($auctionid, 'getpost2');

                    $getlastbid = $this->db_connection->prepare("SELECT bid, name FROM crstube_wdm_bidders WHERE auction_id = :idvar ORDER BY bid DESC");
                    $getlastbid->bindValue(':idvar', $auctionid, PDO::PARAM_INT);
                    $getlastbid->execute();
                    $result = $getlastbid->fetch(PDO::FETCH_ASSOC);
                    if($getlastbid->rowcount() > 1){

                        $formdata = array("title" => $post_title
                            , "auctionid" => $auctionid
                            , "price" => $result['bid']
                            , "image" => $image1
                            , "description" => $description
                            , "username" => $result['name']);
                        return $formdata;
                    }
                }
            }
            if(isset($_POST['auctionid'], $_POST['uid'])){
                $auctionid = $_POST['auctionid'];
                $auctionauthkey = $this->getSettings($auctionid, 'authkey');
                if($auctionauthkey != false && $auctionauthkey == $_POST['uid']){
                    $getlastbid = $this->db_connection->prepare("SELECT bid, name FROM crstube_wdm_bidders WHERE auction_id = :idvar ORDER BY bid DESC");
                    $getlastbid->bindValue(':idvar', $auctionid, PDO::PARAM_INT);
                    $getlastbid->execute();
                    $result = $getlastbid->fetch(PDO::FETCH_ASSOC);
                    if($getlastbid->rowcount() > 1){
                        return $result = array("price" => $result['bid'], "name" => $result['name']);
                    }
                }
            }
            if(isset($_GET['uid'], $_GET['prod'])){
                $auctionid = $_GET['prod'];
                $auctionauthkey = $this->getSettings($auctionid, 'authkey');
                if($auctionauthkey != false && $auctionauthkey == $_GET['uid']){
                    $getlastbid = $this->db_connection->prepare("SELECT bid, name FROM crstube_wdm_bidders WHERE auction_id = :idvar ORDER BY bid DESC");
                    $getlastbid->bindValue(':idvar', $auctionid, PDO::PARAM_INT);
                    $getlastbid->execute();
                    $result = $getlastbid->fetch(PDO::FETCH_ASSOC);
                    if($getlastbid->rowcount() > 1){
                        $itemname = $this->getSettings($auctionid, 'gettitle');
                        return $result = array("price" => $result['bid'], "name" => $result['name'], 'itemname' => $itemname);
                    }
                }
            }
        }else{
            $auctionauthkey = $this->getSettings($uid, 'authkey');
            if($auctionauthkey != false){
                return "auctionpayment.php?auctionid=".$uid."&uid=".$auctionauthkey;
            }
        }

        return false;
    }