DateTimeZone::listIdentifiers

(PHP 5 >= 5.2.0, PHP 7)

Returns a numerically indexed array containing all defined timezone identifiers

public static array DateTimeZone::listIdentifiers ([ int $what = DateTimeZone::ALL [, string $country = NULL ]] )

Object oriented style

Procedural style

array timezone_identifiers_list ([ int $what = DateTimeZone::ALL [, string $country = NULL ]] )

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.

Returns:

Returns array on success or FALSE on failure.

Changelog:

5.3.0

Added the optional what and country parameters.

Examples:

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