############## rpc_client.php

$client = new Zend_XmlRpc_Client('http://127.0.0.1:8888/dev_central/ldx/public_html/testing/rpc_server.php');
$response = $client->call('say_hello', array('Scarlett Johansson'));
print "<p>$response</p>";


############## rpc_server.php

/**
* Returns a welcome phrase.
*
* @param string $name User's name.
* @return string A welcome phrase.
*/
function say_hello($name) {
    return "Hello $name!";
}

$server = new Zend_XmlRpc_Server();
$server->addFunction('say_hello');
$server->handle();


############## PHP error:

[22-Apr-2011 17:18:10] PHP Fatal error:  Uncaught exception 'Zend_XmlRpc_Client_FaultException' with message 'Failed to parse response' in /Users/ade/Documents/projects/ZendFramework-1.11.5/library/Zend/XmlRpc/Client.php:381
Stack trace:
#0 /Users/ade/Documents/projects/dev_central/ldx/public_html/testing/rpc_client.php(8): Zend_XmlRpc_Client->call('say_hello', Array)
#1 {main}
  thrown in /Users/ade/Documents/projects/ZendFramework-1.11.5/library/Zend/XmlRpc/Client.php on line 381