This class is used to contain responses to XML-RPC requests. A server method handler will construct an xmlrpcresp and pass it as a return value. This same value will be returned by the result of an invocation of the send method of the xmlrpc_client class.
The first instance is used when execution has happened without difficulty: $xmlrpcval is an xmlrpcval value with the result of the method execution contained in it.
The second type of constructor is used in case of failure. $errcode and $errstring are used to provide indication of what has gone wrong. See xmlrpc_server for more information on passing error codes.
Returns the integer fault code return from the XML-RPC response $resp. A zero value indicates success, any other value indicates a failure response.