Bug #67302 [Com]: DateTime->setTimezone does not set TZ correctly

Edit report at https://bugs.php.net/bug.php?id=67302&edit=1 ID: 67302 Comment by: arjen at react dot com Reported by: alan at bulbstudios dot com Summary: DateTime->setTimezone does not set TZ correctly Status: Open Type: Bug Package: Date/time related Operating System: OSX, Debian GNU/Linux PHP Version: 5.5.12 Block user comment: N Private report: N New Comment: Already reported in https://bugs.php.net/bug.php?id=67077 Previous Comments: ------------------------------------------------------------------------ [2014-05-20 11:24:26] arjen at react dot com DateTimeZone objects cannot be constructed by passing a timezone abbreviation anymore since 5.5.10: http://3v4l.org/Ui5ab#v5510 Probably broken by https://bugs.php.net/bug.php?id=45543 ------------------------------------------------------------------------ [2014-05-19 15:02:35] alan at bulbstudios dot com Another test case that shows the time is preserved when using a cloned DateTime, and also that the DateTimeZone offsets appear to be causing issues: http://3v4l.org/QpJYP ------------------------------------------------------------------------ [2014-05-19 14:12:28] alan at bulbstudios dot com A multi-version test case is available at: http://3v4l.org/mvReq ------------------------------------------------------------------------ [2014-05-19 12:24:05] alan at bulbstudios dot com The test script is actually: #!/usr/bin/env php <?php date_default_timezone_set('UTC'); echo date_default_timezone_get(), PHP_EOL; $utc = new DateTimeZone('UTC'); $time = DateTime::createFromFormat('Y-m-d H:i:s', '2014-05-19 11:30:00'); foreach (['BST', 'Etc/GMT+1', 'GMT+1', 'CEST'] as $abbr) { $time->setTimezone(new DateTimeZone($abbr)); echo "{$abbr}: {$time->format(DATE_RFC822)}", PHP_EOL; } ------------------------------------------------------------------------ [2014-05-19 12:19:19] alan at bulbstudios dot com Description: ------------ Setting a timezone of either BST, GMT+1, Etc/GMT+1 or CEST on a DateTime object seems to modify the time of the object and set the timezone incorrectly. Works fine on PHP 5.4.28, barring the missing GMT+1. Test script: --------------- #!/usr/bin/env php <?php echo date_default_timezone_get(), PHP_EOL; $utc = new DateTimeZone('UTC'); $time = DateTime::createFromFormat('Y-m-d H:i:s', '2014-05-19 11:30:00'); foreach (['BST', 'GMT+1', 'CEST'] as $abbr) { $time->setTimezone(new DateTimeZone($abbr)); echo "{$abbr}: {$time->format(DATE_RFC822)}", PHP_EOL; } Expected result: ---------------- UTC BST: Mon, 19 May 14 12:30:00 +0100 Etc/GMT+1: Mon, 19 May 14 12:30:00 +0100 GMT+1: Mon, 19 May 14 12:30:00 +0100 CEST: Mon, 19 May 14 14:30:00 +0200 Actual result: -------------- UTC BST: Mon, 19 May 14 12:30:00 +0100 Etc/GMT+1: Mon, 19 May 14 11:30:00 -0100 GMT+1: Mon, 19 May 14 13:30:00 +0100 CEST: Mon, 19 May 14 14:30:00 +0100 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67302&edit=1