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Bug #63940 DateTime->modify(last day of ) not working properly for December
Submitted: 2013-01-08 15:32 UTC Modified: 2015-05-10 04:22 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: carlos dot jimene dot guirao at gmail dot com Assigned:
Status: No Feedback Package: Date/time related
PHP Version: 5.3.20 OS: Ubuntu 10.04.4 LTS
Private report: No CVE-ID: None
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 [2013-01-08 15:32 UTC] carlos dot jimene dot guirao at gmail dot com 
Description:
------------
Working with DateTime object as shown on manual.

If you modify a DateTime object using this relative format "last day of December Year" it fails giving instead last day of next January.

It seems that it was corrected when used in DateTime Constructor instead. So if you create DateTime object using same string in constructor it works.



Test script:
---------------
$datetime = new DateTime();
$datetime->modify('last day of December 2012');
var_dump($datetime->format('Y-m-d'));

$anotherdt = new DateTime('last day of December 2012');
var_dump($anotherdt->format('Y-m-d'));


Expected result:
----------------
string(10) "2012-12-31"
string(10) "2012-12-31"


Actual result:
--------------
string(10) "2013-01-31"
string(10) "2012-12-31"

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 [2013-01-08 15:37 UTC] carlos dot jimenez dot guirao at gmail dot com 
In php version PHP 5.4.6
OS:	Ubuntu 12.10

Same script outputs:
string(10) "2012-12-31"
string(10) "2012-12-31"

Results working as expected.
 [2015-04-20 03:29 UTC] pasindu@php.net 
http://3v4l.org/6PJ9o#v530

Output for hhvm-3.5.0 - 3.6.1
string(10) "2012-12-01"
string(10) "2012-12-31"

Output for 5.3.6 - 5.6.8, php7@20140507 - 20150401
string(10) "2012-12-31"
string(10) "2012-12-31"

Output for 5.3.0 - 5.3.5
string(10) "2015-04-30"
string(10) "2012-12-31"

* 5.3 is eol and seems to work on current versions
 [2015-04-27 23:17 UTC] cmb@php.net
-Status: Open +Status: Feedback
 [2015-04-27 23:17 UTC] cmb@php.net 
This issue might dependent on the timezone. Which one do you have
set, Carlos?

  var_dump(ini_get('date.timezone'));
 [2015-05-10 04:22 UTC] php-bugs at lists dot php dot net 
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Re-Opened". Thank you.
 
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