Description:
------------
The documentation for xmlrpc_encode_request includes these two lines:

$response = xmlrpc_decode($file);
if (xmlrpc_is_fault($response)) {

xmlrpc_decode's result type is mixed.  When it returns something that is not an array, the following notice is thrown:

PHP Notice:  xmlrpc_is_fault(): Array argument expected in <file> on line <line>

In bug #40793, it was reasserted that this notice from xmlrpc_is_fault() is by design.  Thus, the example code must be wrong.  (I wouldn't expect that a proper example should throw notices.)