In this article, we will perform an installation of ionCube on an Ubuntu 16.04 server. First, we will explain what is “ionCube”, and then we will proceed with the step-by-step instructions for installing and how to check it is installed on the Ubuntu 16.04. ionCube is an extension of a PHP module that is used to speed up web pages and load encrypted PHP files. In other words, ionCube is an encoder tool used to ensure that your PHP applications are not redistributed illegally and are not being modified or read by anyone.