PHP SOAP Attributes .net Web Service

I have spent a good week looking for an answer that I can understand. I'm fairly new to the web developing world.

My problem lies with generating a soap message that requires values in attributes to be set as well as the elements themselves.

Here is an simplified example of the SOAP message I am trying to create.

Client = PHP

Server = .NET

SOAP message needed:

 <PingRequest EchoToken="string">
      <EchoData>string</EchoData>
 </PingRequest>

WSDL part

  <s:element name="PingRequest" type="s0:PingRequest" />
  <s:complexType name="PingRequest">
    <s:sequence>
      <s:element minOccurs="0" maxOccurs="1" name="EchoData" type="s:string" />
    </s:sequence>
    <s:attribute name="EchoToken" type="s:string" />
  </s:complexType>

I've spent lots trying to understand how to make a class and other objects to pass to the webservice, however, my brain fails me. Apologies if my question is a little obscure. Here is my attempt at invoking my webservice:

    <?php
    //connection to wsdl
    $client = new SoapClient('http://localhost/ws.asmx?wsdl',
                array(  "trace"          => 1,
                        "exceptions"     => 0
                ));

    try {
        // Ping = Function
        // PingRequest = method?
        $result = $client->PingRequest(array('EchoData' => 'moo'));

    } catch (SOAPFAULT $f){
    }

    echo "\n The Result: \n";
    print_r($result);

    print "<pre>";
    print "Request :\n".htmlspecialchars($client->__getLastRequest()) ."\n";
    print "Response:\n".htmlspecialchars($client->__getLastResponse())."\n";
    print "</pre>";
    ;

?>

Request:

<ns1:PingRequest>
   <ns1:EchoData>moo</ns1:EchoData>
</ns1:PingRequest>

Any help is a thumbs up.

EDIT: thanks to lisa: i was able to create a class for this: but i still dont understand

class PingRequest {
  public $EchoData; // string
  public $EchoToken; // string
  public $TimeStamp; // dateTime
  public $Target; // PingTarget
  public $Version; // decimal
  public $TransactionIdentifier; // string
  public $SequenceNmbr; // nonNegativeInteger
  public $TransactionStatusCode; // PingRequestStatusCode
  public $RetransmissionIndicator; // boolean
}

made it very 开发者_开发技巧easy. thank you

create a new class variable with name of webservice class and then create your stdclasses for each element or attribute you wish to pass. (must use the class generator lisa supplied.

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You need to generate the php classes from the wsdl file. http://www.urdalen.no/wsdl2php/index.php