Bug #77788 [NEW]: date_add returns invalid time during DST transition
From: r dot schuil at gmail dot com
Operating system: Ubuntu
PHP version: 7.2.16
Package: Date/time related
Bug Type: Bug
Bug description:date_add returns invalid time during DST transition
Description:
------------
When the addition to date/time causes it to be within the hour of DST
transition, PHP returns an invalid date/time.
For example, 2019-01-31 02:00:12 plus two months returns 2019-03-31
02:00:12, which gets rejected by MySQL because the 3rd hour does not
exist on this date. Instead, it should return 2019-03-31 03:00:12
Test script:
---------------
<?php
$date = date_create('2019-01-31 02:00:12');
date_add($date, date_interval_create_from_date_string('2 months'));
echo date_format($date, 'Y-m-d H:i:s');
?>
Expected result:
----------------
2019-03-31 03:00:12
Actual result:
--------------
2019-03-31 02:00:12
--
Edit bug report at https://bugs.php.net/bug.php?id=77788&edit=1
--
Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=77788&r=trysnapshot54
Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=77788&r=trysnapshot55
Try a snapshot (trunk): https://bugs.php.net/fix.php?id=77788&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=77788&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=77788&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=77788&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=77788&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=77788&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=77788&r=support
Expected behavior: https://bugs.php.net/fix.php?id=77788&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=77788&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=77788&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=77788&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=77788&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=77788&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=77788&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=77788&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=77788&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=77788&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=77788&r=mysqlcfg
Thread (7 messages)
- r dot schuil at gmail dot com