Instantiate SOAP Request Objects

[Samuel Vogel <samydelux@xxxxxxxxx>]

Hey,

I would like to know how I can instantiate the types that I get via the 
__getTypes() function or know if this is even possible.
I am asking because I have a webservice in which all functions expect an 
specific object to be passed to them, rather than a list of arguments. 
And I am hoping that I do not have to code all those objects into my PHP 
Code, but rather instantiate them kinda from the wsdl!

Here is what I have:

    $map = array('Credentials' => 'Credentials', 'GetSourceTextRequest' 
=> 'GetSourceTextRequest');
    $ws = new SoapClient('http://192.168.0.1:8080/Service?wsdl', 
array('classmap' => $map));

    $test = new GetSourceTextRequest();

It does not work this way however, I do get a class not found failure. 
How can I instantiate an object from SOAP?

__getTypes() gives me something like this:

struct Credentials {
 string Password;
 string Username;
}

Any hints would be appreciated!

Regards,
Samy