How to install CodeIgniter on Server(cPanel).

Hello,

I was working on a .php project which is a Login/Password page which allow user to access or not of a contain.
The problem is I was working on localhost otherwise I need know to put it on internet.
I never put a website on internet before. So I looked on internet and I found a few tuto talking about how to install CodeIgniter on Server.
So I come here to know if anybody can explain me how to install it(which folder/file have I to move on the server ? Is there a file that I have to modify ? and so on).

Thanks you !