How to use php NuSOAP and PEAR::SOAP together?

Question

Hi,

I have a store based on osCommerce. I am using two modules to add few functionality to the store. one uses PEAR::SOAP library and another uses NuSOAP library.

Now that merchants want to use together. the issue here is both libraries implement the same functionality with the same class name , methods and objects etc.

what is the right way of separating these out? i know there is a concept of namespace. but how to use that here?