php写的soap客户端访问用gsoap（C++）建立的webservice服务端的有关问题【50分】

php写的soap客户端访问用gsoap（C++）建立的webservice服务端的问题【50分】
我用gsoap写的服务端和客户端。想见http://happyyourlife.spaces.live.com/blog/cns!C6D18F3A3C949232!431.entry
http://www.cppblog.com/qiujian5628/archive/2008/06/19/54019.html
C++开发的服务端和客户端，客户端访问服务端执行正常结果。我想用php做客户端访问gsoap的webservice。出现问题。
Fatal error: Uncaught SoapFault exception: [WSDL] SOAP-ERROR: Parsing WSDL: Couldn't find <definitions> in 'http://localhost:8888/?wsdl' in F:\phpinstall\webroot\web\one.php:5 Stack trace: #0 F:\phpinstall\webroot\web\one.php(5): SoapClient->SoapClient('http://localhos...') #1 {main} 
服务端情况：
Socket connection successful: master socket = 3 
SOAP 1.1 fault: SOAP-ENV:Client [no subcode] 
"Method 'ns1:httpserver' not implemented: method name or namespace not recognized" 
Detail: [no detail] 
  我的WSDL文件：
<?xml version="1.0" encoding="UTF-8"?>
<definitions name="httpserver"
 targetNamespace="http://127.0.0.1/httpserver.wsdl"
 xmlns:tns="http://127.0.0.1/httpserver.wsdl"
 xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
 xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
 xmlns:ns="urn:httpserver"
 xmlns:SOAP="http://schemas.xmlsoap.org/wsdl/soap/"
 xmlns:MIME="http://schemas.xmlsoap.org/wsdl/mime/"
 xmlns:DIME="http://schemas.xmlsoap.org/ws/2002/04/dime/wsdl/"
 xmlns:WSDL="http://schemas.xmlsoap.org/wsdl/"
 xmlns="http://schemas.xmlsoap.org/wsdl/">

<types>

 <schema targetNamespace="urn:httpserver"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  xmlns:ns="urn:httpserver"
  xmlns="http://www.w3.org/2001/XMLSchema"
  elementFormDefault="unqualified"
  attributeFormDefault="unqualified">
  <import namespace="http://schemas.xmlsoap.org/soap/encoding/"/>
 </schema>

</types>

<message name="addRequest">
 <part name="num1" type="xsd:double"/>
 <part name="num2" type="xsd:double"/>
</message>

<message name="addResponse">
 <part name="sum" type="xsd:double"/>
</message>

<portType name="httpserverPortType">
 <operation name="add">
  <documentation>Service definition of function ns__add</documentation>
  <input message="tns:addRequest"/>
  <output message="tns:addResponse"/>
 </operation>
</portType>

<binding name="httpserver" type="tns:httpserverPortType">
 <SOAP:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
 <operation name="add">
  <SOAP:operation style="rpc" soapAction=""/>
  <input>
  <SOAP:body use="encoded" namespace="urn:httpserver" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
  </input>
  <output>
  <SOAP:body use="encoded" namespace="urn:httpserver" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>