Drupal's Website Down Error

If you get this error from Drupal:

Unable to use the MySQLi database because the MySQLi extension for PHP is not installed. Check your php.ini to see how you can enable it.

The php.ini is located at: /etc/php5/apache2/php.ini

I was trying to give a direct link to php modules for one of the Drupal modules and it just didn't work.