Bug #74691 [Fbk->Nab]: Novosibirsk Data Time Anomaly

Edit report at https://bugs.php.net/bug.php?id=74691&edit=1 ID: 74691 Updated by: derick@php.net Reported by: karpulix at ya dot ru Summary: Novosibirsk Data Time Anomaly -Status: Feedback +Status: Not a bug Type: Bug Package: Date/time related Operating System: All PHP Version: 7.1.5 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php Actually, I see what happens. There is no bug. Unlike Moscow and New_York, Novosibirsk changed GMT offsets between June 2nd,2015 and June 2nd, 2017. Moscow: Europe/Moscow Sat Mar 26 23:00:00 2011 UT = Sun Mar 27 03:00:00 2011 MSK isdst=0 gmtoff=14400 Europe/Moscow Sat Oct 25 21:59:59 2014 UT = Sun Oct 26 01:59:59 2014 MSK isdst=0 gmtoff=14400 Europe/Moscow Sat Oct 25 22:00:00 2014 UT = Sun Oct 26 01:00:00 2014 MSK isdst=0 gmtoff=10800 (Last change was in 2014 to UTC+3) New York UTC+3 Novosibirsk: Asia/Novosibirsk Sat Mar 26 20:00:00 2011 UT = Sun Mar 27 03:00:00 2011 +07 isdst=0 gmtoff=25200 Asia/Novosibirsk Sat Oct 25 18:59:59 2014 UT = Sun Oct 26 01:59:59 2014 +07 isdst=0 gmtoff=25200 Asia/Novosibirsk Sat Oct 25 19:00:00 2014 UT = Sun Oct 26 01:00:00 2014 +06 isdst=0 gmtoff=21600 Asia/Novosibirsk Sat Jul 23 19:59:59 2016 UT = Sun Jul 24 01:59:59 2016 +06 isdst=0 gmtoff=21600 Asia/Novosibirsk Sat Jul 23 20:00:00 2016 UT = Sun Jul 24 03:00:00 2016 +07 isdst=0 gmtoff=25200 UTC+6 in 2015, and UTC+7 in 2017. That's why you get the 3600 seconds difference. Previous Comments: ------------------------------------------------------------------------ [2017-06-02 11:29:10] derick@php.net Can you add the Actual and Expected output please? ------------------------------------------------------------------------ [2017-06-02 11:20:34] karpulix at ya dot ru Description: ------------ Incorrect time interval in the Novosibirsk time zone. The problem is easy to reproduce on any server ---------------------- Некорректный интервал времени Новосибирском часовом поясе. Проблему легко воспроизвести на любом сервере Test script: --------------- $datetime_start = new DateTime('02.06.2015',new DateTimeZone("Europe/Moscow")); $datetime_end = new DateTime('02.06.2017',new DateTimeZone("Europe/Moscow")); print_r($datetime_end->getTimestamp() - $datetime_start->getTimestamp()); echo PHP_EOL; $datetime_start = new DateTime('02.06.2015',new DateTimeZone("America/New_York")); $datetime_end = new DateTime('02.06.2017',new DateTimeZone("America/New_York")); print_r($datetime_end->getTimestamp() - $datetime_start->getTimestamp()); echo PHP_EOL; $datetime_start = new DateTime('02.06.2015',new DateTimeZone("Asia/Novosibirsk")); $datetime_end = new DateTime('02.06.2017',new DateTimeZone("Asia/Novosibirsk")); print_r($datetime_end->getTimestamp() - $datetime_start->getTimestamp()); echo PHP_EOL; ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=74691&edit=1