WCF & PHP SOAP

I have a .NET WCF hosted by a windows service which my PHP app needs to communcate with. I am trying a very simple example and cannot get them linked: PHP CODE -------------------- $wsdl_url = "http://localhost:8000/LimmWatcherController/service?wsdl"; $client = new SoapClient($wsdl_url); $params->nodeId = 7455; var_dump($client->__getFunctions()); $result = $client->__soapCall('GetModelFile',array('parameters' => $params)); RESULT -------------------- array(1) { [0]=> string(59) "GetModelFileResponse GetModelFile(GetModelFile $parameters)" } Fatal error: Uncaught SoapFault exception: [HTTP] Unsupported Media Type in c:\Inetpub\wwwroot\mastermodel\testService.php:9 Stack trace: #0 [internal function]: SoapClient->__doRequest('<?xml version="...', 'http://localhos...', 'http://tempuri....', 1, 0) #1 c:\Inetpub\wwwroot\mastermodel\testService.php(9): SoapClient->__soapCall('GetModelFile', Array) #2 {main} thrown in c:\Inetpub\wwwroot\mastermodel\testService.php on line 9 Notice that the first line here accurately shows my method so I'm assuming I'm incorrectly identifying my parameters.?. I can access this through any .NET client and the function just returns a Hello World string (no processing to rule out issues with the method). Any ideas? Thank you, Kris