php - How to start a new website project in codeigniter -

I'm actually working on CI from the last 2 weeks for the codeigniter . During this period, I created several views.php files, some controllers.fp files and some .php files

Now I want to start a new website project.

What should I do to remove all files of my controllers, scenes and models from e.t.c. And download another codeigniter and start with begnning?

Here's how to do several sites on a CI example of Phil Sturgeon, let's do it here Explains ways and describes professionals and opposition.

But what was said about modular separation in his latest article?