<?php
set_time_limit(0);
$post_url = 'http://<your-ip-address>:8365/xmlrpc.php?xml=';

//specify the method we are calling
$method = 'method_name';

// create parameter array
$params = array('mypass', // Cortex password - REQUIRED
                1, // server id - REQUIRED
                // more params...
                );

// encode xmlrpc request
$xml_request = xmlrpc_encode_request($method,$params);

// make the request
$response = @file_get_contents($post_url.urlencode(substr($xml_request,strpos($xml_request,"\n")+1)));

if (!$response) { // failed
    echo 'unable to execute xmlrpc request';
} else {
    $result = xmlrpc_decode($response);

    if (isset($result['Exception'])) {
        die($result['Exception']);
    } else {
        if ($result) {
            echo 'Success!';
        }
    }
}
?>