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<?php foreach (\DateTimeZone::listIdentifiers(\DateTimeZone::ALL_WITH_BC) as $tz) { try { new \DateTimeZone($tz); if (preg_match('{\AEtc/GMT[+-]\d+\z}', $tz)) { echo "OK: $tz", PHP_EOL; } } catch (\Throwable $ex) { echo "FAIL: $tz", PHP_EOL; } }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.9, 5.5.17 - 5.5.38, 5.6.1 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.13, 8.1.15 - 8.1.28, 8.2.0, 8.2.2 - 8.2.18, 8.3.0 - 8.3.6
OK: Etc/GMT+0 OK: Etc/GMT+1 OK: Etc/GMT+10 OK: Etc/GMT+11 OK: Etc/GMT+12 OK: Etc/GMT+2 OK: Etc/GMT+3 OK: Etc/GMT+4 OK: Etc/GMT+5 OK: Etc/GMT+6 OK: Etc/GMT+7 OK: Etc/GMT+8 OK: Etc/GMT+9 OK: Etc/GMT-0 OK: Etc/GMT-1 OK: Etc/GMT-10 OK: Etc/GMT-11 OK: Etc/GMT-12 OK: Etc/GMT-13 OK: Etc/GMT-14 OK: Etc/GMT-2 OK: Etc/GMT-3 OK: Etc/GMT-4 OK: Etc/GMT-5 OK: Etc/GMT-6 OK: Etc/GMT-7 OK: Etc/GMT-8 OK: Etc/GMT-9
Output for 8.1.14, 8.2.1
FAIL: Etc/GMT+0 FAIL: Etc/GMT+1 FAIL: Etc/GMT+10 FAIL: Etc/GMT+11 FAIL: Etc/GMT+12 FAIL: Etc/GMT+2 FAIL: Etc/GMT+3 FAIL: Etc/GMT+4 FAIL: Etc/GMT+5 FAIL: Etc/GMT+6 FAIL: Etc/GMT+7 FAIL: Etc/GMT+8 FAIL: Etc/GMT+9 OK: Etc/GMT-0 OK: Etc/GMT-1 OK: Etc/GMT-10 OK: Etc/GMT-11 OK: Etc/GMT-12 OK: Etc/GMT-13 OK: Etc/GMT-14 OK: Etc/GMT-2 OK: Etc/GMT-3 OK: Etc/GMT-4 OK: Etc/GMT-5 OK: Etc/GMT-6 OK: Etc/GMT-7 OK: Etc/GMT-8 OK: Etc/GMT-9
Output for 5.5.10 - 5.5.16, 5.6.0
Fatal error: Uncaught exception 'Exception' with message 'DateTimeZone::__construct(): Unknown or bad timezone (CST6CDT)' in /in/HMcFD:5 Stack trace: #0 /in/HMcFD(5): DateTimeZone->__construct('CST6CDT') #1 {main} thrown in /in/HMcFD on line 5
Process exited with code 255.
Output for 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 5 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 10 Fatal error: Undefined class constant 'ALL_WITH_BC' in /in/HMcFD on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 5 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 10 Fatal error: Class 'DateTimeZone' not found in /in/HMcFD on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Parse error: syntax error, unexpected ')', expecting '(' in /in/HMcFD on line 3
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
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Parse error: parse error, unexpected ')', expecting '(' in /in/HMcFD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/HMcFD on line 3 Parse error: parse error, expecting `'('' in /in/HMcFD on line 3
Process exited with code 255.

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