Installing/Configuring
PHP Manual

Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

Intl Configure Options
Name Default Changeable Changelog
intl.default_locale   PHP_INI_ALL  
For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

intl.default_locale string


Installing/Configuring
PHP Manual