$var=”20/04/2012″;<br /> $date = str_replace(‘/’, ‘-‘, $var);<br /> echo date(‘Y-m-d’, strtotime($date));

$old_date = date(‘l, F d y h:i:s’); // returns Saturday, January 30 10 02:06:34<br /> $old_date_timestamp = strtotime($old_date);<br /> $new_date = date(‘Y-m-d H:i:s’, $old_date_timestamp);<br />