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admin/environment/php extension/intl

From MoodleDocs

The Internationalization extension (Intl) is a wrapper for the ICU library, a set of C/C++ and Java libraries that provide Unicode and Globalization support for software applications. It enables PHP programmers to perform UCA-conformant collation and date/time/number/currency formatting in their scripts.

MS Windows

To enable this extension add the following line to your php.ini file usually found in /php:


And then set the intl.default_locale and intl.error_level directives in your php.ini file.


intl.default_locale = en_utf8

intl.error_level = E_WARNING

The intl.error_level directive is optional.

In a WAMP installation it may be required to add the php path (e.g. C:\wamp\bin\php\php5.3.13 or C:\wamp\bin\php\php5.4.3) to the the system PATH so that the module4 could uploaded properly (see,80704,82499 for a couple of other approaches).

Other operating systems

Use system package manager or specify compilation flag.

  • Debian 5.0 (& Ubuntu) use: apt-get install php-intl or apt-get install php5-intl
  • CentOS 5.5 (& RedHat) you should (probably) be using php 5.3 from remi and then use: yum install php-intl

See also