Bug #77144 [NEW]: strtotime date week conversion

From: Date: Tue, 13 Nov 2018 08:52:27 +0000
Subject: Bug #77144 [NEW]: strtotime date week conversion
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-217922@lists.php.net to get a copy of this message 
From:             frank dot hartmann at netfira dot com
Operating system: Windows Server 2016
PHP version:      7.2.12
Package:          Date/time related
Bug Type:         Bug
Bug description:strtotime date week conversion

Description:
------------
The 31st of December 2018 is converted to the first week of 2018 instead
of the first week of 2019 when using a combination of strototime and
date. 

Test script:
---------------
echo date("W-Y", strtotime("2018-12-31T00:00:00Z"))."\n"; //outputs
01-2018 instead of 01-2019
echo date("d-m-Y", strtotime("2018-12-31T00:00:00Z")); // correct
calculation

Expected result:
----------------
I expect to see 01-2019 as the output of the first line


-- 
Edit bug report at https://bugs.php.net/bug.php?id=77144&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=77144&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=77144&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=77144&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=77144&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=77144&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=77144&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=77144&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=77144&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=77144&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=77144&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=77144&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=77144&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=77144&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77144&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=77144&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=77144&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=77144&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=77144&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=77144&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=77144&r=mysqlcfg

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