Overview
KB
Technical FAQ
PHP Manual
CSS2 Manual
HTML Manual
JS Guide
JS Reference
PhpDock Manual
Nu-Coder Manual
PhpExpress Manual
PHP Joomla
Development
Learn PHP
 
<IntlTimeZone::fromDateTimeZoneIntlTimeZone::getDisplayName>
^IntlTimeZoneLast updated: Mon, 26 Oct 2026

IntlTimeZone::getCanonicalID

intltz_get_canonical_id

(PHP 5 >= 5.5.0, PHP 7, PHP 8, PECL >= 3.0.0a1)

IntlTimeZone::getCanonicalID -- intltz_get_canonical_id — Get the canonical system timezone ID or the normalized custom time zone ID for the given time zone ID

Description

Object-oriented style (method):

public static function IntlTimeZone::getCanonicalID(string $timezoneId, bool &$isSystemId = null): string|false

Procedural style:

function intltz_get_canonical_id(string $timezoneId, bool &$isSystemId = null): string|false

Warning

This function is currently not documented; only its argument list is available.

Parameters

timezoneId

isSystemId

Return Values


<IntlTimeZone::fromDateTimeZoneIntlTimeZone::getDisplayName>
^IntlTimeZoneLast updated: Mon, 26 Oct 2026