Bug #60960 [Nab]: Wrong number of days.

Edit report at https://bugs.php.net/bug.php?id=60960&edit=1 ID: 60960 User updated by: robertosuursoo at yahoo dot com dot br Reported by: robertosuursoo at yahoo dot com dot br Summary: Wrong number of days. Status: Not a bug Type: Bug Package: Date/time related Operating System: Ubuntu 11.04 64bits PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Thanks a lot! Previous Comments: ------------------------------------------------------------------------ [2012-02-03 00:50:52] aharvey@php.net Yep, this happens with the Brazil/East time zone, so it's just crossing a DST boundary: if you look at $interval->h on the last interval, it's 23 hours from midnight on the 21st to midnight on the 22nd and therefore not a full day. ------------------------------------------------------------------------ [2012-02-02 22:04:47] rasmus@php.net Unable to reproduce here as well with PHP 5.3.10. Which timezone are you using? Most likely DST-related. ------------------------------------------------------------------------ [2012-02-02 21:42:58] anon at anon dot anon Obviously some wretched daylight savings issue. Call: date_default_timezone_set('UTC'); It's the only way to make any programming language's date handling sane. ------------------------------------------------------------------------ [2012-02-02 20:15:53] carloschilazo at gmail dot com I couldnt reproduce the problem, I get a result of 1 on: $a = new DateTime('2012-10-21'); $b = new DateTime('2012-10-22'); $interval = $a->diff($b); Tested Ubuntu 11 64 bits also ------------------------------------------------------------------------ [2012-02-02 19:48:53] robertosuursoo at yahoo dot com dot br Description: ------------ The diff function is calculating the wrong number of days. PHP 5.3.5-1ubuntu7.4 with Suhosin-Patch (cli) (built: Dec 13 2011 18:30:11) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies with Xdebug v2.1.0, Copyright (c) 2002-2010, by Derick Rethans Test script: --------------- <html><head><title>TEST</title></head><body> <?php $a = new DateTime('2012-10-19'); $b = new DateTime('2012-10-22'); $interval = $a->diff($b); ?> <p>$interval->days:<?=$interval->days?></p> <?php $a = new DateTime('2012-10-20'); $b = new DateTime('2012-10-22'); $interval = $a->diff($b); ?> <p>$interval->days:<?=$interval->days?></p> <?php $a = new DateTime('2012-10-21'); $b = new DateTime('2012-10-22'); $interval = $a->diff($b); ?> <p>$interval->days:<?=$interval->days?></p> </body></html> Expected result: ---------------- $interval->days:3 $interval->days:2 $interval->days:1 Actual result: -------------- $interval->days:3 $interval->days:2 $interval->days:0 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=60960&edit=1