<?php
$now = time();
$uptime = `uptime`;
$re='/^\s*([0-9]{1,2}:[0-9]{2}(am|pm))\s+up (.+),\s+(\d+) users,\s+load average: (.+), (.+), (.+)/';
$timestamp = gmdate('Y-m-d H:i:s', $now);
preg_match($re, $uptime, $part);
$uptime = array(
'time' => $part[1],
'duration' => $part[3],
'users' => (int)$part[4],
'load1' => (float)$part[5],
'load5' => (float)$part[6],
'load15' => (float)$part[7],
);
$packet = wddx_packet_start('uptime info');
wddx_add_vars($packet, 'timestamp', 'uptime');
$out = wddx_packet_end($packet);
echo $out;
?>