PUBLIC MARKS from "Xavier Lacot" with tags ssl & php

Serving secure pages on a website is made a lot easier by having both your secure and insecure pages served by the same files - all you need to do is change the scheme from http:// to https:// and you're done. But how do you manage which pages should redirect to the secure server? And how do you make sure you redirect users back when they're finished submitting sensitive information?