From: hoang dot nguyen at groupion dot com
Operating system: Windows, Linux
PHP version: 5.4Git-2012-08-22 (snap)
Package: Date/time related
Bug Type: Bug
Bug description:"DateTime->modify('+0 days')" Modifies DateTime Object
Description:
------------
Calling "modify()" with a delta of 0 should not change the time, regardless
of whether a time zone was defined for the DateTime object or not, and
independent from how the object was created (from a UNIX timestamp or a
date/time string with or without time zone).
Test script:
---------------
See long version with more details and possible regressions here:
http://pastebin.com/v8RybhVh
Below is a short excerpt for the current bug.
<?php
echo "FROM TIMESTAMP, NO TZ:\n";
$date = new DateTime('@'.strtotime('2012-08-22 00:00:00 CEST'));
echo $date->format('Y-m-d H:i:s T').' (offset
'.$date->getOffset().")\n";
$date->modify('+0 days');
echo $date->format('Y-m-d H:i:s T').' (offset
'.$date->getOffset().")\n";
?>
Expected result:
----------------
FROM TIMESTAMP, NO TZ:
2012-08-21 22:00:00 GMT+0000 (offset 0) <-- should be equal
2012-08-21 22:00:00 GMT+0000 (offset 0) <-- to this
FROM TIMESTAMP, WITH TZ:
2012-08-22 00:00:00 CEST (offset 7200)
2012-08-22 00:00:00 CEST (offset 7200)
FROM STRING:
2012-08-22 00:00:00 CEST (offset 7200)
2012-08-22 00:00:00 CEST (offset 7200)
Actual result:
--------------
Output from PHP 5.4.4, 5.4.6 and snapshot r4e56105 from August 22, 2012:
FROM TIMESTAMP, NO TZ:
2012-08-21 22:00:00 GMT+0000 (offset 0) <-- different
2012-08-21 23:00:00 GMT+0000 (offset 0) <-- from this
FROM TIMESTAMP, WITH TZ:
2012-08-22 00:00:00 CEST (offset 7200)
2012-08-22 00:00:00 CEST (offset 7200)
FROM STRING:
2012-08-22 00:00:00 CEST (offset 7200)
2012-08-22 00:00:00 CEST (offset 7200)
In PHP 5.2.0, the bug appears when creating DateTime from a string (with
time zone), which one might test as well to guard against similar bugs:
FROM TIMESTAMP, NO TZ:
2012-08-21 22:00:00 GMT+0100 (offset 7200)
2012-08-21 22:00:00 GMT+0100 (offset 7200)
FROM TIMESTAMP, WITH TZ:
2012-08-22 00:00:00 CEST (offset 7200)
2012-08-22 00:00:00 CEST (offset 7200)
FROM STRING:
2012-08-22 00:00:00 CEST (offset 7200) <-- different
2012-08-21 23:00:00 CEST (offset 7200) <-- from this
--
Edit bug report at https://bugs.php.net/bug.php?id=62896&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=62896&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=62896&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=62896&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=62896&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=62896&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=62896&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=62896&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=62896&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=62896&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=62896&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=62896&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=62896&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=62896&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=62896&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=62896&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62896&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=62896&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=62896&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=62896&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=62896&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=62896&r=mysqlcfg
