PHP Soap wsdl响应问题

我正在开发php soap来实现一个保险单发布应用程序。我设置的所有内容都得到了来自web服务的响应号码。但是我不知道如何从web服务（xml）中获取响应数据。下面我将提供我的web服务请求和响应。

链接到web服务https://es.adpolice.gov.ae/TrafficInsurance/TrafficInsuranceServicesNew.asmx?op=CreateVehicleInsurancePolicy

这是我正在尝试的代码。。请引导我。

class SOAPStruct
{
    function __construct($user, $pass) 
    {
        $this->userName = $user;
        $this->Password = $pass;
    }
}
$service = new SoapClient("https://es.adpolice.gov.ae/TrafficInsurance/TrafficInsuranceServicesNew.asmx?wsdl", array('trace' => 1));
$auth = new SOAPStruct('*****','****');
$header = new SoapHeader("http://adpolice.gov.ae/TrafficInsurance/TrafficInsuranceServices.asmx",'SoapHeaderIn',$auth,false); 
$service->__setSoapHeaders(array($header)); 
$param = array('lngInsuranceCompanyCode'=> '1','intInsuranceKindCode'=>'1','lngTcf'=>'1','strPolicyNo'=>'1','dtExpiryDate'=>'2016-04-30','dtStartDate'=>'2015-03-31','strChassisNo'=>'6T1BE4DFDFDFDFD','strRemarks'=>'dfdf','strUserCreated'=>'dfdfd');
$response = $service->CreateVehicleInsurancePolicy($param);
print_r($response);