- var_dump: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
var_dump(date('Y-m-d', strtotime('tuesday')));
var_dump(date('Y-m-d', strtotime('tuesday + 1 month')));
var_dump(date('Y-m-d', strtotime('friday')));
var_dump(date('Y-m-d', strtotime('friday + 1 month')));