--TEST-- Bug #70245 (strtotime does not emit warning when 2nd parameter is object or string) --FILE-- <?php $d = new DateTime('2011-01-15 00:00:00'); var_dump(strtotime('-1 month', $d)); ?> --EXPECTF-- Warning: strtotime() expects parameter 2 to be integer, object given in %sbug70245.php on line %d bool(false)