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<?php // @see https://stackoverflow.com/questions/77131068/how-to-retain-the-time-zone-info-when-truncating-a-timestamp-with-time-zone date_default_timezone_set('UTC'); $dates = [ '1999-12-31 20:59:59+00', '1999-12-31 20:59:59', '2000-01-01 07:29:59', '1999-12-31 20:00:00+00', '1999-12-31 20:00:00', '2000-01-01 07:00:00', '2000-01-01 07:00:00 +00', '2000-01-01 07:00:00 Australia/Adelaide' ]; foreach ($dates as $dateString) { $date = new \DateTimeImmutable($dateString); echo $dateString."\n-> ".$date->format('r')."\n\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
1999-12-31 20:59:59+00 -> Fri, 31 Dec 1999 20:59:59 +0000 1999-12-31 20:59:59 -> Fri, 31 Dec 1999 20:59:59 +0000 2000-01-01 07:29:59 -> Sat, 01 Jan 2000 07:29:59 +0000 1999-12-31 20:00:00+00 -> Fri, 31 Dec 1999 20:00:00 +0000 1999-12-31 20:00:00 -> Fri, 31 Dec 1999 20:00:00 +0000 2000-01-01 07:00:00 -> Sat, 01 Jan 2000 07:00:00 +0000 2000-01-01 07:00:00 +00 -> Sat, 01 Jan 2000 07:00:00 +0000 2000-01-01 07:00:00 Australia/Adelaide -> Sat, 01 Jan 2000 07:00:00 +1030

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