PHP 5 SoapServer用法？

class MySoapService {
    public function hello($name) {
        return "Hello, $name!";
    }
}

$server = new SoapServer("http://example.com/my_soap_service.wsdl");
$server->setClass("MySoapService");
$server->handle();

<?xml version="1.0"?><definitions name="MySoapService"
    targetNamespace="http://example.com/my_soap_service.wsdl"
    xmlns:tns="http://example.com/my_soap_service.wsdl"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns="http://schemas.xmlsoap.org/wsdl/">

   <message name="helloRequest">
        <part name="name" type="xsd:string"/>
    </message>

   <message name="helloResponse">
        <part name="return" type="xsd:string"/>
    </message>

    <portType name="MySoapServicePortType">
       <operation name="hello">
           <input message="tns:helloRequest"/>
           <output message="tns:helloResponse"/>
        </operation>
    </portType>

   <binding name="MySoapServiceBinding" type="tns:MySoapServicePortType">
        <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
       <operation name="hello">
            <soap:operation soapAction="http://example.com/my_soap_service.wsdl#hello"/>
           <input>
                <soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
            </input>
           <output>
                <soap:body use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
            </output>
        </operation>
    </binding>

   <service name="MySoapServiceService">
        <port name="MySoapServicePort" binding="tns:MySoapServiceBinding">
            <soap:address location="http://example.com/my_soap_service.php"/>
        </port>
    </service>

</definitions>

$client = new SoapClient("http://example.com/my_soap_service.wsdl");
$result = $client->hello("World");
echo $result; // 输出 "Hello, World!"