Is there a way to create WSDL for more than one class?

Is there a way to create WSDL for more than one class at once?

I have a complex class hierarchy, can I create WSDL with your script for more than one class?

You can not (and should not) combine 2 classes into one WSDL out of the box.
You can of course create 2 different WSDL files.

If really do want to create one WSDL from multiple sources you can extend "PHP2WSDL\PHPClass2WSDL" to accept an array of classes and loop over them in generateWSDL().
If you do this you may have a hard time setting up the SoapServer in PHP. One class per WSDL easier.

Thanks for your reply - I will try to create one WebService that includes everything I need in a WSDL.