note 114161 added to datetimezone.listabbreviations

This method returns an associative array containing some 'major' timezones (like CEST), which on their own contain more specific 'geographic' timezones (like Europe/Amsterdam). If you're using these timezones and their offset/DST information, it's extremely important to realize the following: *It seems like ALL DIFFERENT OFFSET/DST CONFIGURATIONS (including historical configurations) of each timezone are included!* For example, Europe/Amsterdam can be found six times in the output of this function. Two occurrences (offset 1172/4772) are for the Amsterdam time used until 1937; two (1200/4800) are for the time that was used between 1937 and 1940; and two (3600/4800) are for the time used since 1940. *Therefore, YOU CANNOT RELY ON THE OFFSET/DST INFORMATION RETURNED BY THIS FUNCTION as being currently correct/in use!* If you want to know the current offset/DST of a certain timezone, you'll have to do something like this: <?php $now = new DateTime(null, new DateTimeZone('Europe/Amsterdam')); echo $now->getOffset(); ?> P.S. I'm sorry for my use of caps lock in this post, but as this behavior is not described in the documentation, I considered it to be important enough to shout. Normally I don't do such things :) ---- Server IP: 72.52.91.14 Probable Submitter: 72.52.91.14 ---- Manual Page -- http://php.net/manual/en/datetimezone.listabbreviations.php Edit -- https://master.php.net/note/edit/114161 Del: integrated -- https://master.php.net/note/delete/114161/integrated Del: useless -- https://master.php.net/note/delete/114161/useless Del: bad code -- https://master.php.net/note/delete/114161/bad+code Del: spam -- https://master.php.net/note/delete/114161/spam Del: non-english -- https://master.php.net/note/delete/114161/non-english Del: in docs -- https://master.php.net/note/delete/114161/in+docs Del: other reasons-- https://master.php.net/note/delete/114161 Reject -- https://master.php.net/note/reject/114161 Search -- https://master.php.net/manage/user-notes.php