Description:
------------
In win2000\apache 2.0.53\php5.0.4,I wrote some code for test.wsdl(I can't modify it, for some reason),and test by 
http://192.168.0.228/vnet/client.php,but I can't get result in expectation.


Reproduce code:
---------------
<?xml version="1.0" encoding="utf-8"?>
<wsdl:definitions xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:s="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="http://192.168.0.228/vnet/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" targetNamespace="http://192.168.0.228/vnet/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">
  <wsdl:types>
    <s:schema elementFormDefault="qualified" targetNamespace="http://192.168.0.228/vnet/">
      <s:element name="Grant">
        <s:complexType>
          <s:sequence>
            <s:element minOccurs="0" maxOccurs="1" name="APID" type="s:string" />
            <s:element minOccurs="0" maxOccurs="1" name="Authenticator" type="s:string" />
            <s:element minOccurs="0" maxOccurs="1" name="TimeStamp" type="s:string" />
          </s:sequence>
        </s:complexType>
      </s:element>
      <s:element name="GrantResponse">
        <s:complexType>
          <s:sequence>
            <s:element minOccurs="0" maxOccurs="1" name="GrantResult" type="tns:GrantResult" />
          </s:sequence>
        </s:complexType>
      </s:element>
      <s:complexType name="GrantResult">
        <s:sequence>
          <s:element minOccurs="0" maxOccurs="1" name="APID" type="s:string" />
          <s:element minOccurs="0" maxOccurs="1" name="Authenticator" type="s:string" />
          <s:element minOccurs="0" maxOccurs="1" name="TimeStamp" type="s:string" />
        </s:sequence>
      </s:complexType>
    </s:schema>
  </wsdl:types>
  <wsdl:message name="GrantSoapIn">
    <wsdl:part name="parameters" element="tns:Grant" />
  </wsdl:message>
  <wsdl:message name="GrantSoapOut">
    <wsdl:part name="parameters" element="tns:GrantResponse" />
  </wsdl:message>
  <wsdl:portType name="TestSoap">
    <wsdl:operation name="Grant">
      <documentation xmlns="http://schemas.xmlsoap.org/wsdl/">Grant Interface</documentation>
      <wsdl:input message="tns:GrantSoapIn" />
      <wsdl:output message="tns:GrantSoapOut" />
    </wsdl:operation>
  </wsdl:portType>
  <wsdl:binding name="TestSoap" type="tns:TestSoap">
    <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
    <wsdl:operation name="Grant">
      <soap:operation soapAction="http://192.168.0.228/vnet/Grant" style="document" />
      <wsdl:input>
        <soap:body use="literal" />
      </wsdl:input>
      <wsdl:output>
        <soap:body use="literal" />
      </wsdl:output>
    </wsdl:operation>
  </wsdl:binding>
  <wsdl:service name="Test">
    <documentation xmlns="http://schemas.xmlsoap.org/wsdl/">Description</documentation>
    <wsdl:port name="TestSoap" binding="tns:TestSoap">
      <soap:address location="http://192.168.0.228/vnet/server.php" />
    </wsdl:port>
  </wsdl:service>
</wsdl:definitions>
<?php
//server.php
class GrantResult{
	public $APID;
}
function Grant($req){
  $res = new GrantResult();
  $res->APID = $req->APID;
  return $res;
}
$server = new SoapServer("test.wsdl", array('soap_version' => SOAP_1_1));
$server->addFunction("Grant");
$server->handle();
?>
<?php
//client.php
header("content-type:text/html;charset=utf-8");
class GrantRequest{
  public $APID = "14000019";
}
try {
   $opts = array('trace'      => 1, 'exceptions' => 0,'soap_version' => SOAP_1_1);
   $client = new SoapClient("test.wsdl", $opts);
   $req = new GrantRequest();
   $data = $client->Grant($req);
   print "RequestHeader :<hr>\n".htmlspecialchars($client->__getLastRequestHeaders()) ."<hr>\n";
   print "Request :<hr>\n".htmlspecialchars($client->__getLastRequest()) ."<hr>\n";
   print "ResponseHeader :<hr>\n".htmlspecialchars($client->__getLastResponseHeaders()) ."<hr>\n";
   print "Response:<hr>\n".htmlspecialchars($client->__getLastResponse())."\n";
}
catch (SOAPFault $e) {
   print "<hr>Error<hr>";
   print $e;
}

Expected result:
----------------
<?xml version="1.0" encoding="UTF-8" ?> 
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://192.168.0.228/vnet/">
 <SOAP-ENV:Body>
  <ns1:GrantResponse>
    <ns1:GrantResult>
      <ns1:APID>14000019</ns1:APID>
    </ns1:GrantResult>
  </ns1:GrantResponse> 
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Actual result:
--------------
<?xml version="1.0" encoding="UTF-8" ?> 
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://192.168.0.228/vnet/">
 <SOAP-ENV:Body>
  <ns1:GrantResponse /> 
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope>