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

From: alan at bulbstudios dot com Operating system: OSX, Debian GNU/Linux PHP version: 5.5.12 Package: Date/time related Bug Type: Bug Bug description:DateTime->setTimezone does not set TZ correctly 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 bug report at https://bugs.php.net/bug.php?id=67302&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67302&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67302&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67302&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67302&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67302&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67302&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67302&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67302&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67302&r=support Expected behavior: https://bugs.php.net/fix.php?id=67302&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67302&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67302&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67302&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67302&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67302&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67302&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67302&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67302&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67302&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67302&r=mysqlcfg