Bug #51975 [Opn->Bgs]: Missing DST free (UTC±X) timezones in DateTimeZone::listIdentifiers()

Edit report at http://bugs.php.net/bug.php?id=51975&edit=1 ID: 51975 Updated by: aharvey@php.net Reported by: V-o-E at gmx dot de Summary: Missing DST free (UTC±X) timezones in DateTimeZone::listIdentifiers() -Status: Open +Status: Bogus Type: Bug Package: Date/time related Operating System: All PHP Version: 5.3.2 New Comment: The Olson tz database -- which forms the basis of the time zone support both for PHP and pretty much every operating system not called Windows -- doesn't define any time zones relative to UTC other than the Etc/GMT±x time zones and the UTC time zone itself. The Etc/GMT time zones are the "wrong way around", but that's been the case for decades, and isn't something we (or probably anyone else) can fix without confusing people even more. Previous Comments: ------------------------------------------------------------------------ [2010-06-02 15:27:44] V-o-E at gmx dot de Description: ------------ There are not daylight saving time free timezones (UTC±X) in DateTimeZone::listIdentifiers() (same with DateTimeZone::ALL) except UTC±0. As workaround i can use buggy "Etc/GMT±X" from DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC): Etc/GMT+2 => Etc/GMT-2 Etc/GMT-2 => Etc/GMT+2 See: http://en.wikipedia.org/wiki/List_of_time_zones_by_UTC_offset Test script: --------------- var_dump(DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC)); var_dump(DateTimeZone::listIdentifiers()); $a = DateTimeZone::listIdentifiers(DateTimeZone::ALL_WITH_BC); var_dump($a[373]); // output: string(9) "Etc/GMT+2" $b = DateTimeZone::listIdentifiers(); var_dump($b[373]); // output: string(15) "Pacific/Fakaofo" date_default_timezone_set('UTC'); echo date('H:i:s') . "\n"; // output: 13:13:01 date_default_timezone_set('Etc/GMT+2'); echo date('H:i:s') . "\n"; // output: 11:13:01 date_default_timezone_set('Etc/GMT-2'); echo date('H:i:s') . "\n"; // output: 15:13:01 date_default_timezone_set('Pacific/Fakaofo'); echo date('H:i:s') . "\n"; // output: 01:13:01 Expected result: ---------------- array(564) { ... } array(xyz) { ... [405]=> string(3) "UTC" [406]=> string(3) "UTC-12" [407]=> string(3) "UTC-11" ... } string(9) "Pacific/Fakaofo" string(15) "Pacific/Fakaofo" 13:16:08 15:16:08 11:16:08 03:16:08 Actual result: -------------- array(564) { ... } array(406) { ... [405]=> string(3) "UTC" } string(9) "Etc/GMT+2" string(15) "Pacific/Fakaofo" 13:16:08 11:16:08 15:16:08 03:16:08 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=51975&edit=1