<?php
  function getUptime() {
      $now = time();
      $uptime = `uptime`;
      $re = '/^\s*([0-9]{1,2}:[0-9]{2}(am|pm))\s+up (.+),';
      $re .= '\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)$part[7],
          );
      return array($timestamp, $uptime);
  }
?>