แนะนำโค้ดการเปรียบเทียบเวลาโดยการดึงจากฐานข้อมูลด้วยครับ

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?
include('config.php');
$user = $_POST['users'];
$Date = $_POST['popup_container'];
$stime = $_POST['stime'];
$etime = $_POST['etime'];

	 function DateDiff($strDate1,$strDate2)
	 {
				return (strtotime($strDate2) - strtotime($strDate1))/  ( 60 * 60 * 24 );  // 1 day = 60*60*24
	 }
	 function TimeDiff($strTime1,$strTime2)
	 {
				return (strtotime($strTime2) - strtotime($strTime1))/  ( 60 * 60 );// 1 Hour =  60*60
	 }
	 function DateTimeDiff($strDateTime1,$strDateTime2)
	 {
				return (strtotime($strDateTime2) - strtotime($strDateTime1))/  ( 60 * 60 ); // 1 Hour =  60*60
	 }
//echo "Date Time Diff = ".DateTimeDiff($stime,$etime)."<br>";
	// echo "Date Diff = ".DateDiff($stime,$etime)."<br>";
	 echo "$TimeDiff= ".TimeDiff($stime,$etime)."<br>"; // ผมแก้ตรงนี้ครับ 
$TimeDiff = $TimeDiff *60; 
echo "time = $TimeDiff<br>";
?>