As you might recall from previous chapters, the main purpose of a web application is to process HTTP requests coming from the client and return a response. If that is the main goal of your application, managing requests and responses should be an important part of your code.
PHP is a language that can be used for scripts, but its main usage is in web applications. Due to this, the language comes ready with a lot of helpers for managing requests and responses. Still, the native way is not ideal, and as good OOP developers, we should come up with a set of classes that help with that. The main elements for this small project—still inside your application—are the request and the router. Let's start!