- var_dump: documentation ( source)
- mktime: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
$startDate = mktime(0, 0, 0, 8, 20, 2013);
$date = date('Y-m-d => D', strtotime("Next Sunday", strtotime("+2 week", $startDate)));
var_dump($date);