Symfony2 and HTTP Fundamentals

Congratulations! By learning about Symfony2, you're well on your way towards being a more productive, well-rounded and popular web developer (actually, you're on your own for the last part). Symfony2 is built to get back to basics: to develop tools that let you develop faster and build more robust applications, while staying out of your way. Symfony is built on the best ideas from many technologies: the tools and concepts you're about to learn represent the efforts of thousands of people, over many years. In other words, you're not just learning "Symfony", you're learning the fundamentals of the web, development best practices, and how to use many amazing new PHP libraries, inside or independently of Symfony2. So, get ready.
True to the Symfony2 philosophy, this chapter begins by explaining the fundamental concept common to web development: HTTP. Regardless of your background or preferred programming

HTTP is Simple¶

HTTP (Hypertext Transfer Protocol to the geeks) is a text language that allows two machines to communicate with each other. That's it! For example, when checking for the latest xkcd comic, the following (approximate) conversation takes place:
And while the actual language used is a bit more formal, it's still dead-simple. HTTP is the term used to describe this simple text-based language. And no matter how you develop on the web, the goal of your server is always to understand simple text requests, and return simple text responses.
language, this chapter is a must-read for everyone.Symfony2 is built from the ground-up around that reality. Whether you realize it or not, HTTP is something you use everyday. With Symfony2, you'll learn how to master it.