(PHP 5 >= 5.2.0, PHP 7)
DateTimeZone::listIdentifiers -- timezone_identifiers_list — Returns a numerically indexed array containing all defined timezone identifiers
Object oriented style
public static DateTimeZone::listIdentifiers ([ int $timezoneGroup = DateTimeZone::ALL [, string|null $countryCode = null ]] ) : array
Procedural style
timezone_identifiers_list ([ int $timezoneGroup = DateTimeZone::ALL [, string|null $countryCode = null ]] ) : array
timezoneGroup
One of the DateTimeZone class constants (or a combination).
countryCode
A two-letter ISO 3166-1 compatible country code.
Note: This option is only used when
timezoneGroupis set toDateTimeZone::PER_COUNTRY.
Returns the array of timezone identifiers.
| Version | Description |
|---|---|
| 8.0.0 | Prior to this version, false was returned on failure. |
| 7.1.0 | countryCode is nullable now. |
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
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https://www.php.net/manual/en/datetimezone.listidentifiers.php