Use date to display a timestamp

<?php
$mydate = '2012-05-28 13:22:55';

echo date('m/d/Y', strtotime($mydate));
// displays: 05/28/2012

echo date('Y-m-d H:i:s', strtotime($mydate));
// displays: 2012-05-28 13:22:55


// see: http://php.net/manual/en/function.date.php

?>