How can I install Intl on my XAMPP server on OS X?
I tried modifying my XAMPP>etc>php.ini and uncommenting the line:
;extension=php_
On OSX if you have homebrew available and have PHP7:
$ brew install php70-intl // For PHP7.0
$ brew install php71-intl // For PHP7.1
For PHP5.5:
$ brew install php55-intl
Re-open your terminal window to ensure it works right in your session. To see if it loaded via your CLI interpreter:
$ php -m | grep intl
Or:
$ php -i "(command-line 'phpinfo()')" | grep intl
Source: https://daveismyname.blog/blog/install-php-intl-on-mac-using-homebrew