How to fix this error? Fatal error: Call to undefined function ctype_alnum() in .../magento18/lib/Zend/Uri.php on line X?

Question

How to fix this error:

Fatal error: Call to undefined function ctype_alnum() in /Applications/AMPPS/www/farhom.com/magento18/lib/Zend/Uri.php on line 109

I was trying to run Magento on Ampps on Mac OS X.

Answer 1

Open Ampps Application -> PHP Tab -> PHP Extension -> Select "ctype" -> Apply.

Restart Apache server.

Forum with answer posts

Answer 2

Check to make sure the ctype package is installed; It's typically installed by default but some distros exclude it.

For Alpine:

apk add php7-ctype