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MediaWiki extensions manual
Release status: stable
Description Provides functions to localize the names of languages, countries, currencies, and time units based on their language code.
Latest version 4.14.0 (Continous updates)
MediaWiki 1.30+
Database changes No
Composer mediawiki/cldr
License GPL-2.0-or-later, data variant of BSD 3-clauses
Download Included in Language Extension Bundle or
Example Translatewiki.net
Public wikis using 6,625 (Ranked 63rd)
Translate the CLDR extension if it is available at translatewiki.net

The CLDR extension contains local language names for different languages, countries, currencies, and time units extracted from CLDR data. See translatewiki:CLDR for information.


  • Download and move the extracted cldr folder to your extensions/ directory.
    Developers and code contributors should install the extension from Git instead, using:cd extensions/
    git clone https://gerrit.wikimedia.org/r/mediawiki/extensions/cldr
  • Add the following code at the bottom of your LocalSettings.php file:
    wfLoadExtension( 'cldr' );
  • Yes Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

If you download from git, change the file from CLDR to cldr.

Updating data


The CLDR extension comes with data pre-populated in the language files, but if you want to get the latest data from the Unicode Consortium, you'll need to download it from the CLDR site and then run a rebuild script.

Download newest data from CLDR site:


Example (from within the cldr directory):

wget http://www.unicode.org/Public/cldr/latest/core.zip
unzip core.zip -d core
php rebuild.php

Usage and parameters


Language names


CLDR defines the class LanguageNames which has a static method, getNames(). LanguageNames::getNames accepts three parameters:

  1. code - the ISO 639 (see Manual:Language#Language code for details) code of the preferred language to return the list in
  2. fbMethod - fallback method, it should be set to one of the following:
    • LanguageNames::FALLBACK_NATIVE - Missing entries fallback to the native name (default)
    • LanguageNames::FALLBACK_NORMAL - Missing entries fallback through the fallback chain
  3. list - which languages to return. Should be set to one of the following:
    • LanguageNames::LIST_MW_SUPPORTED - Only languages that have localization in MediaWiki
    • LanguageNames::LIST_MW - All languages that are in Names.php (default)
    • LanguageNames::LIST_MW_AND_CLDR - All languages that are either in MediaWiki or in CLDR



The language names are best access with MediaWiki core functions:

// Japanisch
$name = Language::fetchLanguageName( 'ja', 'de', 'all' );

Country names


CLDR defines the class CountryNames which has a static method, getNames(). CountryNames::getNames accepts one parameter:

  1. code - the ISO 639 code of the preferred language to return the list in



The following example sets a variable to the list of all countries in CLDR in French.

if ( is_callable( array( 'CountryNames', 'getNames' ) ) ) {
    $countries = CountryNames::getNames( 'fr' );

See also