Edit report at http://bugs.php.net/bug.php?id=52480&edit=1
ID: 52480
User updated by: alex dot joyce at staff dot comcen dot com dot au
Reported by: alex dot joyce at staff dot comcen dot com dot au
Summary: Incorrect difference using DateInterval
Status: Open
Type: Bug
Package: Date/time related
Operating System: Debian 5.0.3
PHP Version: 5.3.3
Block user comment: N
New Comment:
Changing the timezone shows a difference.
Australia/Sydney (default): 5 months
UTC: 4 months 28 days
Previous Comments:
------------------------------------------------------------------------
[2010-07-29 09:35:01] degeb...@php.net
With the timezone set to Europe/Copenhagen, I get the same results as
submitter. When set to UTC, I get the same results on Rasmus. This is on
Ubuntu 10.04.
dan...@daniel-laptop:~$ php -v
PHP 5.3.4-dev (cli) (built: Jul 29 2010 09:30:24)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
------------------------------------------------------------------------
[2010-07-29 09:15:41] ras...@php.net
I don't see why I can't reproduce it then. Try adding a call to
date_default_timezone_set() to the top of your script and work in UTC to
eliminate local timezone issues.
date_default_timezone_set('UTC');
$date_start = new DateTime('2010-03-01');
$date_end = new DateTime('2010-07-29');
$interval = $date_start->diff($date_end);
print_r($interval);
------------------------------------------------------------------------
[2010-07-29 08:52:20] alex dot joyce at staff dot comcen dot com dot au
28/29, it doesn't matter. I'm only interested in the months.
I've tried:
1) FreeBSD 6, PHP 5.3.2
2) Debian 4, PHP 5.3.2
3) Debian 6, PHP 5.3.2/PHP 5.3.3
I upgraded that last one to submit this bug report, same fault.
All compiled from source.
------------------------------------------------------------------------
[2010-07-29 08:27:50] ras...@php.net
Don't you mean 4 months and 28 days in the expected results? 7-3=4,
29-1=28
And that is exactly what I get on my Debian box with PHP 5.3.3:
php > $date_start = new DateTime('2010-03-01');
php > $date_end = new DateTime('2010-07-29');
php >
php > $interval = $date_start->diff($date_end);
php >
php > print_r($interval);
DateInterval Object
(
[y] => 0
[m] => 4
[d] => 28
[h] => 0
[i] => 0
[s] => 0
[invert] => 0
[days] => 150
)
Are you using 5.3.3 built from our sources or are you using a
Debian-packaged
version?
------------------------------------------------------------------------
[2010-07-29 04:49:26] alex dot joyce at staff dot comcen dot com dot au
Description:
------------
Trying to calculate the month difference between two dates accurately.
Test script:
---------------
<?php
$date_start = new DateTime('2010-03-01');
$date_end = new DateTime('2010-07-29');
$interval = $date_start->diff($date_end);
print_r($interval);
Expected result:
----------------
DateInterval Object
(
[y] => 0
[m] => 4
[d] => 29
[h] => 0
[i] => 0
[s] => 0
[invert] => 0
[days] => 150
)
Actual result:
--------------
DateInterval Object
(
[y] => 0
[m] => 5
[d] => 0
[h] => 0
[i] => 0
[s] => 0
[invert] => 0
[days] => 150
)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/bug.php?id=52480&edit=1
