Function untuk handle Selisih Tanggal dan Jam

Yang Pertama DateDiff : function datediff($interval, $datefrom, $dateto, $using_timestamps = false) { /* jenis $interval : yyyy - tahun, q - catur wulan ,m - bulan ,y - jumlah selisih hari ,d - hari ,w - minggu ,ww - jumlah minggu ,h - jam ,n - menit ,s - detik */ if (!$using_timestamps) { $datefrom = strtotime($datefrom, 0); $dateto = strtotime($dateto, 0); } $difference = $dateto - $datefrom; // Difference in seconds switch($interval) { case 'yyyy': $years_difference = floor($difference / 31536000); if (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n", $datefrom), date("j", $datefrom), date("Y", $datefrom)+$years_difference) > $dateto) { $years_difference--; } if (mktime(date("H", $dateto), date("i", $dateto), date("s", $dateto), date("n", $dateto), date("j", $dateto), date("Y", $dateto)-($years_difference+1)) > $datefrom) { $years_difference++; } $datediff = $years_difference; break; case "q": $quarters_difference = floor($difference / 8035200); while (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n", $datefrom)+($quarters_difference*3), date("j", $dateto), date("Y", $datefrom)) < $dateto) { $months_difference++; } $quarters_difference--; $datediff = $quarters_difference; break; case "m": $months_difference = floor($difference / 2678400); while (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n", $datefrom)+($months_difference), date("j", $dateto), date("Y", $datefrom)) < $dateto) { $months_difference++; } $months_difference--; $datediff = $months_difference; break; case 'y': $datediff = date("z", $dateto) - date("z", $datefrom); break; case "d": $datediff = floor($difference / 86400); break; case "w": $days_difference = floor($difference / 86400); $weeks_difference = floor($days_difference / 7); // Complete weeks $first_day = date("w", $datefrom); $days_remainder = floor($days_difference % 7); $odd_days = $first_day + $days_remainder; // Do we have a Saturday or Sunday in the remainder? if ($odd_days > 7) { // Sunday $days_remainder--; } if ($odd_days > 6) { // Saturday $days_remainder--; } $datediff = ($weeks_difference * 5) + $days_remainder; break; case "ww": $datediff = floor($difference / 604800); break; case "h": $datediff = floor($difference / 3600); break; case "n": $datediff = floor($difference / 60); break; default: $datediff = $difference; break; } return $datediff; } Cara penggunaannya contoh : maka outputnya: tanggal pertama :2008-05-01 tanggal kedua :2008-05-10 Selisih tanggal tesebut 9 hari