- time: documentation ( source)
- strtotime: documentation ( source)
<?php
$date_string = "09/19/2016";
$current_date = new DateTime();
$your_date = new DateTime($date_string);
// Using objects
if ($your_date < $current_date || $_SESSION['role'] == 'Administrator')
echo'<li><a href="?page=itRooms&weekId=2">Week 2 - W/C 12/09/2016</li></a>';
echo "\n\n";
// Using timestamps
if (strtotime($date_string) < time() || $_SESSION['role'] == 'Administrator')
echo'<li><a href="?page=itRooms&weekId=2">Week 2 - W/C 12/09/2016</li></a>';
?>