Update php session var while staying on the same page?

Question

First of all: This question is not a duplicate, don't close this like my previous question. I've looked at most questions about sessions.

In this case I am looking to update $_SESSION['selectedClient'] while remaining on the same page.

A user can choose a client, this client will be stored in $_SESSION['selectedClient']. At some point a user may want to select another client. So for that, I've tried this:

if(isset($_POST['clientEmail'])){
        $_SESSION['selectedClient'] = $_POST['clientEmail'];
    }

Except this doesnt work. This would set the initial selected client and should also update a next selection.

If you have selected the first client and you're trying to select a new client. These are the outputs:

_POST['clientEmail'] = >lol@lol.com<
_SESSION['selectedClient'] = >lol@lol.com<

after refresh:

_POST['clientEmail'] = ><
_SESSION['selectedClient'] = >login@login.com<

Clarification: login@login.com is the first selected client. lol@lol.com new selected client.
Note 1: session_start() has been set.
Note 2: tried unsetting $_SESSION['selectedClient'] and then assigning the new post.
Note 3: How to use store and use session variables across pages? Doesnt have the answer I am looking for, been on this question multiple times.

If you're staying on the same page, does that mean you're using AJAX? — Barmar, Jan 23 '20 at 10:32
Use Ajax for do that [HERE](https://stackoverflow.com/questions/9650930/how-to-update-session-variable-with-jquery-ajax-is-it-even-possible) — Simone Rossaini, Jan 23 '20 at 10:34
@Barmar No, what I mean with that is: the form action leads to home.php, here is all the code for this page. at the bottom of home.php I include the html page. The application is built through the MVC principle. Those emails are just test emails to test the functioning of the client selection — SomewhatBeginner, Jan 23 '20 at 10:34
login@login.com is the first selected client. After that I'm trying to select lol@lol.com — SomewhatBeginner, Jan 23 '20 at 10:35
So `lol@lol.com` is the new client, but then the session is going back to the first client? — Barmar, Jan 23 '20 at 10:36
Nothing does that by itself, you must have some other code that's changing the session variable. — Barmar, Jan 23 '20 at 10:38
@Barmar Thats correct. It doesnt save the update. after I refresh the page it's back to login@login.com — SomewhatBeginner, Jan 23 '20 at 10:38
if(isset($_POST['clientEmail'])) will only be true when you submit. Looks like there is problem in code. — Umar Abdullah, Jan 23 '20 at 10:39
First I tried to just click in the url-bar and press enter again to avoid re-submitting the form. Secondly I tried to `echo '';` — SomewhatBeginner, Jan 23 '20 at 10:40

Update php session var while staying on the same page?

0 Answers0