Our droplets are Linux based virtual machines where you receive root (administrator) access and can install whatever software you like. To install a stack including Apache, PHP and PostgreSQL you could create a new Ubuntu 14.04 droplet, log in and run the following commands:

apt-get update
apt-get install apache2 php5 install postgresql postgresql-contrib php5-pgsql libapache2-mod-php5

You will need to then create a database user and configure Postgre, this guide will walk you through that. When complete your web root (where to put your php files) will be /var/www/html

If you would prefer to use php 7, I would recommend using an Ubuntu 16.04 droplet and in the command above, replace “php5” with “php7.0” in all the package names.