怎么捕获passbook 注册pass时候的 push token

服务器环境 nginx php mysql
iphone 7.0 /8.1
push token

  if($_SERVER['REQUEST_METHOD']=="POST"){

//            判断是否注册
//            MailModel::getFirst()
            $payload = json_decode($_POST);

//            $payload->pushToken;

            $data['pushtoken']="";
            $data['Devicelibraryidentifier']= $urlsegment[5];
            $data['Authenticationtoken']=$_SERVER['HTTP_AUTHORIZATION'];
            $data['serialnumber']=$urlsegment[8];
            $data['typeId']=$urlsegment[7];
            $data['Update_tag']="";
            $result=DevicesModel::create($data);
            if($result){
                header("HTTP/1.0 201");
            }
            MailModel::send('945627077@qq.com', 'passupdate', '注册pass'. json_decode($data));

            DevicesModel::create($data);
            return;
        }