PHP5 implementation of the XML-RPC protocol.
 
  This is a "PHP5 only" implementation of the XMLRPC protocol. This package
  provides the client and the server side of the protocol. An optimized cache 
  is also available for both parts. 
 
  As a client library, XML_RPC2 is capable of creating a proxy class which 
  exposes the methods exported by the server. As a server library, XML_RPC2 is 
  capable of exposing methods from a class or object instance, seamlessly 
  exporting local methods as remotely callable procedures.