From: Operating system: Mac OS X 10.5.8 PHP version: 5.3SVN-2010-11-02 (snap) Package: Date/time related Bug Type: Bug Bug description:add-Method of DateTime-class
Description: ------------ PHP-Version: PHP 5.3.99-dev (cli) (built: Nov 1 2010 17:42:09) Copyright (c) 1997-2010 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2010 Zend Technologies If a timezone is passed in the time-string to the constructor of the DateTime-Object, a subsequent add() call could result in incorrect results (if the add() call oversteps a daylight-saving time). Test script: --------------- // Gives expected result $date = new DateTime('2010-10-31 01:00 CEST', new DateTimeZone("Europe/Zurich")); $date->setTimezone(new DateTimeZone('Europe/Zurich')); $date->add(new DateInterval('PT3H')); echo $date->format('Y-m-d H:i:sP')."\n"; // Doesn't give expected result $date = new DateTime('2010-10-31 01:00 CEST', new DateTimeZone("Europe/Zurich")); $date->add(new DateInterval('PT3H')); $date->setTimezone(new DateTimeZone('Europe/Zurich')); echo $date->format('Y-m-d H:i:sP')."\n"; Expected result: ---------------- 2010-10-31 04:00:00+01:00 2010-10-31 04:00:00+01:00 Actual result: -------------- 2010-10-31 04:00:00+01:00 2010-10-31 03:00:00+01:00 -- Edit bug report at http://bugs.php.net/bug.php?id=53225&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53225&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53225&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53225&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=53225&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53225&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=53225&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=53225&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=53225&r=needscript Try newer version: http://bugs.php.net/fix.php?id=53225&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=53225&r=support Expected behavior: http://bugs.php.net/fix.php?id=53225&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=53225&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=53225&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=53225&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53225&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=53225&r=dst IIS Stability: http://bugs.php.net/fix.php?id=53225&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=53225&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=53225&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=53225&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=53225&r=mysqlcfg