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run code in 150+ php & hhvm versions
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<?php foreach(array("Asia/Calcutta", "Asia/Kolkata") as $tz) { var_dump(array($tz, in_array($tz, timezone_identifiers_list()))); }
Output for 5.3.0 - 5.6.28, hhvm-3.10.0, 7.0.0 - 7.1.0
array(2) { [0]=> string(13) "Asia/Calcutta" [1]=> bool(false) } array(2) { [0]=> string(12) "Asia/Kolkata" [1]=> bool(true) }
Output for hhvm-3.12.0
array(2) { [0]=> string(13) "Asia/Calcutta" [1]=> bool(false) } array(2) { [0]=> string(12) "Asia/Kolkata" [1]=> bool(false) }
Output for 5.2.6 - 5.2.17
array(2) { [0]=> string(13) "Asia/Calcutta" [1]=> bool(true) } array(2) { [0]=> string(12) "Asia/Kolkata" [1]=> bool(true) }
Output for 5.2.0 - 5.2.5
array(2) { [0]=> string(13) "Asia/Calcutta" [1]=> bool(true) } array(2) { [0]=> string(12) "Asia/Kolkata" [1]=> bool(false) }
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function timezone_identifiers_list() in /in/nhZZ0 on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: timezone_identifiers_list() in /in/nhZZ0 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: timezone_identifiers_list() in /in/nhZZ0 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: timezone_identifiers_list() in /in/nhZZ0 on line 3