XML-RPC has a concept of namespacing; basically, it allows grouping XML-RPC methods by dot-delimited namespaces. This helps prevent naming collisions between methods served by different classes. As an example, the XML-RPC server is expected to server several methods in the 'system' namespace:
system.listMethods
system.methodHelp
system.methodSignature
Internally, these map to the methods of the same name in
Zend_XmlRpc_Server.
If you want to add namespaces to the methods you serve, simply provide a namespace to the appropriate method when attaching a function or class:
<?php
// All public methods in My_Service_Class will be accessible as
// myservice.METHODNAME
$server->setClass('My_Service_Class', 'myservice');
// Function 'somefunc' will be accessible as funcs.somefunc
$server->addFunction('somefunc', 'funcs');