note 36250 added to ref.datetime
| From: | Xiven at rn2 dot php dot net | Date: | Thu, 02 Oct 2003 10:09:20 +0000 |
| Subject: | note 36250 added to ref.datetime | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-57602@lists.php.net to get a copy of this message | ||
One thing PHP really lacks IMHO is an equivalent of ASP's "DateDiff" function.
Here's a function that comes close to duplicating the functionality:
<?php
function datediff($interval, $date1, $date2) {
// Function roughly equivalent to the ASP "DateDiff" function
$seconds = $date2 - $date1;
switch($interval) {
case "y":
list($year1, $month1, $day1) = split('-', date('Y-m-d', $date1));
list($year2, $month2, $day2) = split('-', date('Y-m-d', $date2));
$time1 = (date('H',$date1)*3600) + (date('i',$date1)*60) +
(date('s',$date1));
$time2 = (date('H',$date2)*3600) + (date('i',$date2)*60) +
(date('s',$date2));
$diff = $year2 - $year1;
if($month1 > $month2) {
$diff -= 1;
} elseif($month1 == $month2) {
if($day1 > $day2) {
$diff -= 1;
} elseif($day1 == $day2) {
if($time1 > $time2) {
$diff -= 1;
}
}
}
break;
case "m":
list($year1, $month1, $day1) = split('-', date('Y-m-d', $date1));
list($year2, $month2, $day2) = split('-', date('Y-m-d', $date2));
$time1 = (date('H',$date1)*3600) + (date('i',$date1)*60) +
(date('s',$date1));
$time2 = (date('H',$date2)*3600) + (date('i',$date2)*60) +
(date('s',$date2));
$diff = ($year2 * 12 + $month2) - ($year1 * 12 + $month1);
if($day1 > $day2) {
$diff -= 1;
} elseif($day1 == $day2) {
if($time1 > $time2) {
$diff -= 1;
}
}
break;
case "w":
// Only simple seconds calculation needed from here on
$diff = floor($seconds / 604800);
break;
case "d":
$diff = floor($seconds / 86400);
break;
case "h":
$diff = floor($seconds / 3600);
break;
case "i":
$diff = floor($seconds / 60);
break;
case "s":
$diff = $seconds;
break;
}
return $diff;
}
?>
----
Manual Page -- http://www.php.net/manual/en/ref.datetime.php
Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+36250
Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+36250&report=yes
Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+36250&report=yes