DateTimeZone::listIdentifiers
(PHP 5 >= 5.2.0)
DateTimeZone::listIdentifiers — Returns numerically index array with all timezone identifiers
Description
Object oriented style
   public static array DateTimeZone::listIdentifiers
    ([ int $what = DateTimeZone::ALL
   [, string $country = NULL
  ]] )
  Procedural style
Parameters
- what
- 
      One of DateTimeZone class constants. 
- country
- 
      A two-letter ISO 3166-1 compatible country code. Note: This option is only used when what is set to DateTimeZone::PER_COUNTRY. 
Return Values
Returns array on success or FALSE on failure.
Changelog
| Version | Description | 
|---|---|
| 5.3.0 | Added the optional what and country parameters. | 
Examples
Example #1 A timezone_identifiers_list() example
<?php
$timezone_identifiers = DateTimeZone::listIdentifiers();
for ($i=0; $i < 5; $i++) {
    echo "$timezone_identifiers[$i]\n";
}
?>
The above example will output something similar to:
Africa/Abidjan Africa/Accra Africa/Addis_Ababa Africa/Algiers Africa/Asmara