Bug #78758 [NEW]: DateTime format result is incorrect

From: checgg at gmail dot com Operating system: Any PHP version: 7.1.33 Package: Date/time related Bug Type: Bug Bug description:DateTime format result is incorrect Description: ------------ var_dump(test('2019-10-27 08:55:00'));//result is 2019-10-27 02:55:00 var_dump(test('2019-10-27 09:55:00'));//result is also 2019-10-27 02:55:00 It`s incorrect. Test script: --------------- <?php ini_set('date.timezone', 'Asia/Shanghai'); var_dump(test('2019-10-27 08:55:00'));//result is 2019-10-27 02:55:00 var_dump(test('2019-10-27 09:55:00'));//result is also 2019-10-27 02:55:00 function test($testDate) { $format = 'Y-m-d H:i:s'; $timezone = 'Europe/Paris'; // if ($timezone == 'Europe/Paris') { // return date($format, strtotime($testDate) - 7 * 3600); // } $date = new DateTime($testDate); $date->setTimezone(new DateTimeZone($timezone)); return $date->format($format); } Expected result: ---------------- var_dump(test('2019-10-27 08:55:00'));//result is 2019-10-27 01:55:00 var_dump(test('2019-10-27 09:55:00'));//result is also 2019-10-27 02:55:00 It`s correct. Actual result: -------------- var_dump(test('2019-10-27 08:55:00'));//result is 2019-10-27 02:55:00 var_dump(test('2019-10-27 09:55:00'));//result is also 2019-10-27 02:55:00 It`s incorrect. -- Edit bug report at https://bugs.php.net/bug.php?id=78758&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=78758&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78758&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78758&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78758&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78758&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78758&r=support Expected behavior: https://bugs.php.net/fix.php?id=78758&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78758&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78758&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78758&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=78758&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=78758&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78758&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78758&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78758&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78758&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78758&r=mysqlcfg