@ososoba

The guide you’re working from is for Ubuntu 14.04. While the basics from the guide will work just fine, with the latest release of PHP, there’s no need to run a command to enable PHP modules as they are enabled during package installation.

The php5enmod is specific to PHP 5.x and wouldn’t apply in your case (and it won’t be on your Droplet).

To confirm whether or not mcrypt is enabled, simply create a PHP info page and do a search on the page for mcrypt.

<?php phpinfo(); ?>

@ososoba

When you install a package, where the package is installed depends on the package maintainer. You can install a package while inside of any directory, though that doesn’t mean the package will install there.

If you installed phpMyAdmin using the PPA you’ve noted, then phpMyAdmin is located here:

/usr/share/phpmyadmin

The phpMyAdmin packages don’t auto-configure NGINX by default (as only Apache & Lighttpd are on the list that includes default configurations), so you’d need to setup a location block inside the current server block for your domain to handle requests for phpMyAdmin.

Something such as:

location /phpmyadmin {
    root /usr/share/phpmyadmin;

    try_files $uri $uri/ =404;
}

You would then need to reload NGINX for the changes to take.

systemctl reload nginx

or

service nginx reload

1) The mcrypt.ini file in /etc/php5/conf.d needs to be copied or symlinked to /etc/php5/mods-available:

cd /etc/php5/mods-available
sudo ln -s ../conf.d/mcrypt.ini .
2) Activate the module with sudo php5enmod mcrypt.

3) Restart your web server: If using Apache, it’s like this: sudo /etc/init.d/apache2 restart

Then log into the PMA, the issue will be fixed.