The SitePoint PHP blog has a new tutorial posted from editor Bruno Skvorc looking at building a "snake" game purely with PHP and handling/catching keypresses.

At a recent conference in Bulgaria, there was a hackathon for which Andrew Carter created a PHP console version of the popular “snake” game. I thought it was a really interesting concept, and since Andrew has a history of using PHP for weird things, I figured I’d demystify and explain how it was done.

The original repository is here, but we’ll build a version of it from scratch in this series so no need to clone it.

They start by defining some of the requirements for the game, including that it is to be CLI based with no browser functionality allowed. With those defined, they get into the code, starting with some of the "boilerplate" code to work with the command line environment, handle output and reading in characters as keys are pressed. The tutorial then gets into mapping the snakes to "directions" do that the keypresses would make the snake go up, down, left or right.