mencari selisih tanggal dengan fungsi GregorianToJD()
class hitungTelat{ function berhitung($checkout){ $today = date("Y-m-d"); $m = date("m", strtotime($today)); $d = date("d", strtotime($today)); $y = date("Y", strtotime($today)); $m2 = date('m', strtotime($checkout)); $d2 = date('d', strtotime($checkout)); $y2 = date('Y', strtotime($checkout)); $a=GregorianToJD($m, $d, $y); //today $b=GregorianToJD($m2, $d2, $y2); //checkout date $telat = $a - $b; if($telat<=0) $telat=0; return $telat; } } //$tel = new hitungTelat(); //echo $tel->berhitung("2012-07-23"); //kalau today=2012-07-25 maka hasilnya = 2