$a_date = "2009-11-23"; echo date("Y-m-t", strtotime($a_date));
$lastDateOfNextMonth =strtotime('last day of next month') ; $lastDay = date('d/m/Y', $lastDateOfNextMonth); print_r($lastDay);
$lastDay = date('t',strtotime('last month')); print_r($lastDay);