Not very experienced with SOAP and recently I bumped into an issue with it.
I have to make certain requests to the SOAP server and just can't make it work. Is there anyone experienced with SOAP that could put me on the right track? I suspect that the authentication isn't done properly thus returning me empty data objects.

Here's a sample of my code (including the WSDL):

PHP Code:
$auth = array(
'AuthHeader' => array('Username' => 'myuser''Password' => 'mypass'),
'trace' => true

try {
$client = new SoapClient("http://www.eurotaxglasswebservices.com.au/GeneralGGWebService.asmx?WSDL"$auth);
$result $client->__soapCall'GetListOfYears', array('ModelTypeCode' => 'A') );
} catch (
SoapFault $e) {

here is how the client request supposed to be:

HTML Code:
POST /GeneralGGWebService.asmx HTTP/1.1
Host: www.eurotaxglasswebservices.com.au
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
    <AuthHeader xmlns="http://microsoft.com/webservices/">
    <GetListOfYears xmlns="http://microsoft.com/webservices/">
and here is how mine looks

HTML Code:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://microsoft.com/webservices/">
Thank you very much for your time, I would really appreciate any advice you could have for me.