function dmy_to_ymd($dmy) { $d = substr($dmy, 0, 2); $m = substr($dmy, 3, 2); $y = substr($dmy, 6, 4); return ymd($d, $m, $y); }
function jumlah_hari($m, $y) { $ymd = ymd('01', $m, $y); return date("t", strtotime($ymd)); }