XML_RPC_Message::addParam PHP Method

    public function addParam($par)
    {
        $this->params[] = $par;
    }

/**
 * This is the core XML-RPC client it takes the parameters passed in and bundles them up
 * and sends them as an XML-RPC request to the origin server, which processes them against
 * the central database and passes the results back to this client
 *
 * @param string $function  The name of the remote origin function to be called
 * @param array  $params    An array of the parameters to be passed to the origin function
 * @return mixed            The decoded response from the origin server
 */
function getFromOrigin($function, $params)
{
    /**
     * @package    MaxDal
     * @subpackage Delivery
     * @author     Chris Nutting <*****@*****.**>
     *
     */
    $conf = $GLOBALS['_MAX']['CONF'];
    // Create an XML-RPC client to talk to the XML-RPC server
    $client = new XML_RPC_Client($conf['origin']['script'], $conf['origin']['host'], $conf['origin']['port']);
    $message = new XML_RPC_Message($function, array());
    // Add the parameters to the message
    $message->addParam(new XML_RPC_Value($params, $GLOBALS['XML_RPC_String']));
    // Send the XML-RPC message to the server
    $response = $client->send($message, $conf['origin']['timeout'], $conf['origin']['protocol']);
    if (!$response || $response->faultCode() != 0) {
        if (defined('OA_DELIVERY_CACHE_FUNCTION_ERROR')) {
            return OA_DELIVERY_CACHE_FUNCTION_ERROR;
        } else {
            return null;
        }
    } else {
        // Decode the serialized response
        $value = $response->value();
        $value = $value->scalarval();
        $value = unserialize($value);
    }
    return $value;
}