Re: DateTime / Timezone funny behaviour, between different version

On Tue, 17 Nov 2015, Martin Keckeis wrote: > Hello together, > > i just noticed that the date + timezone switching changed a lot last time? > > tl;dr https://3v4l.org/pSplY > > When taking a old datetime: > $date = \DateTime::createFromFormat('d.m.Y H:i:s', '01.01.1900 00:00:00', > new \DateTimeZone('Europe/Berlin')); > > and switching between the given timezone and UTC, the date is sometimes > corrected with some minutes+seconds and sometimes not. Berlin had some interesting timezone rules: Europe/Berlin Fri Mar 31 23:06:31 1893 UT = Fri Mar 31 23:59:59 1893 LMT isdst=0 gmtoff=3208 Europe/Berlin Fri Mar 31 23:06:32 1893 UT = Sat Apr 1 00:06:32 1893 CET isdst=0 gmtoff=3600 Europe/Berlin Sun Apr 30 21:59:59 1916 UT = Sun Apr 30 22:59:59 1916 CET isdst=0 gmtoff=3600 Europe/Berlin Sun Apr 30 22:00:00 1916 UT = Mon May 1 00:00:00 1916 CEST isdst=1 gmtoff=7200 But there was a bug in PHP where we'd ignore the first block, and hence picked a UTC offset of gmtoff=3208 for 1900-01-01, which was wrong. That's now fixed again. cheers, Derick -- http://derickrethans.nl | http://xdebug.org Like Xdebug? Consider a donation: http://xdebug.org/donate.php twitter: @derickr and @xdebug Posted with an email client that doesn't mangle email: alpine