Bug #67001 [Nab]: Time functions affected by machine timezone and current time

Edit report at https://bugs.php.net/bug.php?id=67001&edit=1 ID: 67001 User updated by: danmath01 at yahoo dot com dot ar Reported by: danmath01 at yahoo dot com dot ar Summary: Time functions affected by machine timezone and current time Status: Not a bug Type: Bug Package: Date/time related Operating System: Windows + Linux PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Fixed, checked against 5.4.12 Previous Comments: ------------------------------------------------------------------------ [2014-04-01 14:03:23] derick@php.net Thank you for taking the time to report a problem with PHP. Unfortunately you are not using a current version of PHP -- the problem might already be fixed. Please download a new PHP version from http://www.php.net/downloads.php If you are able to reproduce the bug with one of the latest versions of PHP, please change the PHP version on this bug report to the version you tested and change the status back to "Open". Again, thank you for your continued support of PHP. I can not reproduce this with PHP 5.4.26 and PHP 5.5.7 (but I can with 5.3.22). Can you please upgrade to a later PHP version? ------------------------------------------------------------------------ [2014-04-01 13:59:13] danmath01 at yahoo dot com dot ar Description: ------------ Given an input the DateTime class will produce outputs that are affected by the current default timezone and the current time. The test script provided uses the timestamp for 2013-01-01 00:00:00 and shows that adding 0 minutes can return a result that is 1 hour later. This was observed running the script on the 31st of March 2014, during BST (end of March to end of October), although the localtime should not affect the script. Changing the localtime back 1 week or moving it past October and running the script produces the correct output. This was observed on both Windows with PHP 5.4.7 and on Linux with PHP 5.3.27 and not reproducible on Linux with PHP 5.3.3. Test script: --------------- <?php date_default_timezone_set('Europe/London'); echo date_default_timezone_get(), "\n"; $timestamp= new DateTime("@1356998400"); echo $timestamp->format('Y-m-d H:i:s'), "\n"; $timestamp->modify("+ 0 minutes"); echo $timestamp->format('Y-m-d H:i:s'), "\n"; ?> Expected result: ---------------- Europe/London 2013-01-01 00:00:00 2013-01-01 00:00:00 5.4.7 Actual result: -------------- Europe/London 2013-01-01 00:00:00 2013-01-01 01:00:00 5.4.7 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67001&edit=1