- var_dump: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
- sprintf: documentation ( source)
<?php
var_dump(date('m/d/Y', strtotime(sprintf('04/04/2014 - %d days', date('w', strtotime('04/04/2014')) + 2))));
var_dump(date('m/d/Y H:i:s', strtotime('last saturday', strtotime('2014-04-03 00:00:00'))));
var_dump(date('m/d/Y H:i:s', strtotime('last saturday - 7 days')));