THIS SHOULD NOT BE DEPLOYED TO A LIVE PRODUCTION SERVER: it is some kind of a DEMO project, that will be used as support for a Workshop.
This project is used as support for a workshop during which participants will setup a website that evaluates PHP code on several versions of PHP -- pretty much like 3v4l.org or eval.in.
The workshop is made of several parts, each about half-an-hour long, which will start from (almost) scratch and go as far as we can, depending on the total workshop's duration.
Before coming to the workshop, you should read INSTALL-atelier-2016-05-24-phptour.md and follow the instructions it
contains: it will allow us to get started faster, skipping some not-that-interesting steps.