note 114780 added to datetime.sub

When trying to pass daylight saving state change time, sub() works incorrectly. $t = new DateTime( '2014-03-30 02:00:00' ); $t->add( new DateInterval('PT1H') ); echo $->format('Y-m-d H:i:s'); output will be: '2014-03-30 04:00:00'. Well, it's ok because at 3:00 a.m. daylight saving time begins in my country, so after 02:59:59 must be 04:00:00. But if I try to subtract time: $t = new DateTime( '2014-03-30 04:00:00' ); $t->sub( new DateInterval('PT1H') ); echo $->format('Y-m-d H:i:s'); output will be: '2014-03-30 04:00:00'. Yes, completely the same, not '2014-03-30 02:00:00' as it should be. ---- Server IP: 72.52.91.14 Probable Submitter: 37.229.12.44 ---- Manual Page -- http://php.net/manual/en/datetime.sub.php Edit -- https://master.php.net/note/edit/114780 Del: integrated -- https://master.php.net/note/delete/114780/integrated Del: useless -- https://master.php.net/note/delete/114780/useless Del: bad code -- https://master.php.net/note/delete/114780/bad+code Del: spam -- https://master.php.net/note/delete/114780/spam Del: non-english -- https://master.php.net/note/delete/114780/non-english Del: in docs -- https://master.php.net/note/delete/114780/in+docs Del: other reasons-- https://master.php.net/note/delete/114780 Reject -- https://master.php.net/note/reject/114780 Search -- https://master.php.net/manage/user-notes.php