如何获得旧会话？

Question

I have a post form with captcha based on session for example the code know is Ujkd9 after refreshing the code become Hi8P4 . And this is the problem. If someone post the form the captcha code of the input become old, how to get the old session ?

Answer 1

Well you can't, but you could save the older session into another session key creating a copy of that session, by example :

$_SESSION['session_copy'] = $_SESSION['current'];