fsockopen error in server status

<?php
/*-------------------------------------------------------+
| PHPFusion Content Management System
| Copyright © 2002 - 2011 Nick Jones
| http://www.php-fusion.co.uk/
+--------------------------------------------------------+
| Filename: gsp_panel.php
| CVS Version: 1.00
| Author: Chris "sobe" Johnson
+--------------------------------------------------------+
| This program is released as free software under the
| Affero GPL license. You can redistribute it and/or
| modify it under the terms of this license which you
| can read by viewing the included agpl.txt or online
| at www.gnu.org/licenses/agpl.html. Removal of this
| copyright header is strictly prohibited without
| written permission from the original author(s).
+--------------------------------------------------------*/
if (!defined("IN_FUSION")) { die("Access Denied"); }
function serverstatus($server, $port) {
    $up = @fsockopen($server, $port, $errno, $errstr, 1);
    
    if(!$up) {

                return "<font color=\"red\">Offline</font>";
            } else{

                return "<font color=\"green\">Online</font>";
            }

        fclose($up);
}


openside("Server Status");


$nagastatus = serverstatus("173.245.92.162", 4514);
echo "<div><p style='float: left'>Naga </p><p style='float: right'> " . $nagastatus; 
echo "</p></div>";
$loginstatus = serverstatus("173.245.92.120", 4500);
echo "<br /><div style='clear: both;'><p style='float: left'>Login </p><p style='float: right'>" . $loginstatus; 
echo "</p></div>";
$patchstatus = serverstatus("204.2.139.20", 80);
echo "<br /><div style='clear: both;'><p style='float: left'>Patch </p><p style='float: right'>" . $patchstatus; 
echo "</p></div>";


closeside();

// opentable("Center panel");
// closetable();
?>