PHP SOAP Extension and Google Namespace Issues

[jrj10]

Has anyone had namespace issues using the PHP SOAP Extension on the
Sandbox?

Production is a single namespace. The Sandbox WSDL has namespace
paths to production, with the soap address in the sandbox. This seems
to cause multiple namespaces in the SOAP header when using PHP's SOAP
extension. The authentication credentials are written into one
namespace and it appears Google is looking at the other namespace and
thinks the credentials are not present.

So, the code I am using works in production, but not in the sandbox.

Thanks.