We now have our controller, but it doesn’t really do much other than throw an error about not being able to load the model or view. So let’s create us a model and view.
So now that we have a basic understanding of what the different parts of CodeIgniter are, we can get down to writing our first controller. The Home controller. This will be where the user lands when they visit our site.
CodeIgniter approaches web development with MVC in mind. MVC is a way of presenting data that keeps programme logic and presentation separate from each other. This means that there is little PHP scripting in your presentation pages, keeping them clean and focused on looks.
CodeIgniter is a powerful PHP framework with a very small footprint, built for developers who need a simple and elegant toolkit to create full-featured web applications.