public class ProcessRequest : System.Web.Services.WebService
    {

       [WebMethod]

        public Customer RegisterCustomer(Customer customer)

        {

            var obj = new Customer();

            obj.Name = customer.Name +"_Return";

            obj.LastName = customer.LastName + "_Return";

            obj.AnotherAttribute = customer.AnotherAttribute + "_Return";

            return obj;

        }

        public class Customer

        {

            public string Name { get; set; }

            public string AnotherAttribute { get; set; }

            public string LastName { get; set; }

        }
}

<?php

header("Content-type:text/html;charset=utf-8");

?>

<?php

echo "<br/>-----------PHP通过传递对象参数调用asp.net服务测试--------------<br/>";

$object = new stdClass();

$object->Name = "Test";

$object->LastName = "More tests";

$object->AnotherAttribute = "Abc";

$client = new SoapClient('http://localhost:8091/ProcessRequest.asmx?WSDL');

$result = $client->RegisterCustomer(array('customer' => $object));

print_r($result);

$myObj = $result->RegisterCustomerResult;

echo "<br/>Name:";

print_r($myObj->Name); ?>

-----------PHP通过传递对象参数调用asp.net服务测试--------------

stdClass Object ( [RegisterCustomerResult] => stdClass Object ( [Name] => Test_Return [AnotherAttribute] => Abc_Return [LastName] => More tests_Return ) )

Name:Test_Return