function TestRPC()
{
define( 'username', '' );
define( 'password', '' );
$url = "/limesurvey/index.php?r=admin/remotecontrol";

    $rpcClient = new jsonRPCClient($url, $debug=true);
    //print_rr($rpcClient);

    // receive session key
    var_dump(username);
    var_dump(password);
    echo "<BR>";
    $SessionKey = $rpcClient->get_session_key( username, password );
    echo "<br>SessionKey:"; var_dump($SessionKey);

    $rpcClient->release_session_key( $SessionKey );
}