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<?php date_default_timezone_set('UTC'); echo date_default_timezone_get(), PHP_EOL; $time = DateTime::createFromFormat('Y-m-d H:i:s', '2014-05-19 11:30:00'); foreach (['UTC', 'Europe/London', 'BST', 'Etc/GMT+1', 'GMT+1', 'CEST'] as $abbr) { try { $time->setTimezone(new DateTimeZone($abbr)); echo "{$abbr}: {$time->format(DATE_RFC822)}", PHP_EOL; } catch (Exception $e) {} }
Output for 8.0.21 - 8.0.30, 8.1.8 - 8.1.13, 8.1.15 - 8.1.27, 8.2.0, 8.2.2 - 8.2.17, 8.3.0 - 8.3.4
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 12:30:00 +0100 Etc/GMT+1: Mon, 19 May 14 10:30:00 -0100 GMT+1: Mon, 19 May 14 12:30:00 +0100 CEST: Mon, 19 May 14 13:30:00 +0200
Output for 8.1.14, 8.2.1
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 12:30:00 +0100 GMT+1: Mon, 19 May 14 12:30:00 +0100 CEST: Mon, 19 May 14 13:30:00 +0200
Output for 7.0.20, 7.1.5 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.20, 8.1.0 - 8.1.7
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 11:30:00 +0000 Etc/GMT+1: Mon, 19 May 14 10:30:00 -0100 GMT+1: Mon, 19 May 14 12:30:00 +0100 CEST: Mon, 19 May 14 12:30:00 +0100
Output for 5.5.22 - 5.5.38, 5.6.6 - 5.6.28, 7.0.0 - 7.0.14, 7.1.0
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 11:30:00 +0000 Etc/GMT+1: Mon, 19 May 14 10:30:00 -0100 GMT+1: Mon, 19 May 14 12:30:00 +0100 CEST: Mon, 19 May 14 13:30:00 +0100
Output for 5.5.10 - 5.5.21, 5.6.0 - 5.6.5
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 12:30:00 +0100 Etc/GMT+1: Mon, 19 May 14 11:30:00 -0100 GMT+1: Mon, 19 May 14 13:30:00 +0100 CEST: Mon, 19 May 14 14:30:00 +0100
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.9
UTC UTC: Mon, 19 May 14 11:30:00 +0000 Europe/London: Mon, 19 May 14 12:30:00 +0100 BST: Mon, 19 May 14 12:30:00 +0100 Etc/GMT+1: Mon, 19 May 14 10:30:00 -0100 CEST: Mon, 19 May 14 13:30:00 +0200
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/tErOR on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/tErOR on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tErOR on line 7
Process exited with code 255.

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