strtotime 1 week from yesterday code example

Example 1: convert string to date php

$s = '08/11/2010 19:37:02';
$date = strtotime($s);
echo date('Y-m-d H:i:s', $date);

Example 2: php strtotime 1 day ago from

date('Y-m-d', strtotime('+1 day', strtotime($date)))