If you have received the “Your PHP installation appears to be missing the MySQL extension which Is required by WordPress” error, then this tutorial will be able to help you fix that. This error is triggered when the PHP code in your site is not compatible with the version of PHP your WordPress site is currently using.
More specifically, this problem is related to the outdated MySQL extension which was removed as of PHP 7.0. In this tutorial, we will help you fix the problem with the PHP missing MySQL extension error, and help you complete the WordPress installation successfully.