How to go to find out the link from which the user came?

Question

CodeIgniter

For example, there is a link to something, the user follows it, gets (redirect) to the "Login" window, logged in and I need to then follow the link that he initially clicked on, and not get to the main one. How to do it? How to get this "original" link?

Answer 1

Before the redirect, "remember" HTTP_REFERER - it will contain the path from where the user came from, and after authorization, redirect him to the "saved" path