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.
The Intl extension is required in Moodle 3.4 onwards.
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 to the the system PATH so that the module4 could uploaded properly (see http://forum.wampserver.com/read.php?2,80704,82499 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.
- CentOS 8.0 (& Red Hat) use: dnf install php-intl. CentOS 7.0 (& RedHat) use: yum install php-intl. The package name may be slightly different depending on the repository used for PHP packages, e.g. php74-intl.