- date: documentation ( source)
- strtotime: documentation ( source)
<?php
echo $ts = date('d.m.Y', strtotime('today +1 day last sunday', strtotime('05/05/2015')));
echo ' to ';
echo $ts = date('d.m.Y', strtotime('today +1 day this saturday', strtotime('05/05/2015')));