The timezone_abbreviations_list() returns an associative array containing dst, offset, and the timezone name.
PHP timezone_abbreviations_list() Function has the following syntax.
timezone_abbreviations_list();
PHP timezone_abbreviations_list() Function returns an associative array on success. FALSE on failure.
Print dst, offset, and timezone name for the "act" timezone:
<?php
$tzlist=timezone_abbreviations_list();
print_r($tzlist["act"]);
?>
The code above generates the following result.