PHP how to store GET variables to use it later

Question

I wrote a simple php(html) script to show me a status. Via JQUERY the status update happen automatically. A few parameters are provided from another script and sent via GET to the status script. So the idea was to use S_SESSION

    if( session_status() == PHP_SESSION_NONE ) // if session status is none then start the session
{
    session_start();
    $_SESSION['dur'] = 10;
    $_SESSION['gDur'] =  0;
}else{
    error_log("ShowListeners Session: " . var_export($_SESSION, true),0);
}
if(isset($_GET['dur'])){
    error_log("ShowListeners GET: " . var_export($_GET, true) , 0);
    $_SESSION['dur'] = $_GET['dur'];
    $_SESSION['gDur'] =  $_GET['gDur'];
}

In the part where I try to read the session data

    if(isset($_SESSION['dur']))
        $ret .= getTimeString($_SESSION['dur']);

$_SESSION['dur'] is always not existing. I also can see, that every time the script is called, session_start() is called because I can not see any error_log!

Do I something wrong or is it not possible to store the data in a session variable?

Edit(2021-08-08)

In the meantime I have read a lot about SESSION. I understand, that SESSION are related to users or cookies. But what is not clear to me, is there any possibility to make sure, that several instances can access the same SESSION data? For example, there is a instance running and another instance get over GET an data update. Can this instance access and modify the SESSION date used by the first instance?

Rinshan, do I understand it right? I should use `Session_start` before checking the status? But is than the `session` not started anyway and `session_status()` check makes no sense anymore? — Georgio, Aug 07 '21 at 13:06
`if (session_status() == PHP_SESSION_NONE)` always gives 1 means true as output with your code — Rinshan Kolayil, Aug 07 '21 at 14:05
Sorry, I am also bit confused by running multiple php versions for deleting and adding comments — Rinshan Kolayil, Aug 07 '21 at 14:09

score 0 · Answer 1 · answered Aug 07 '21 at 13:05

0

I think that your first condition scope can be the cause of your problem..., why don't you call "session_start()" everytime ?

Here's my proposition that you can try :

session_start();
if(!isset($_SESSION['dur'])) {

    $_SESSION['dur'] = 10;
    $_SESSION['gDur'] =  0;
}
if(isset($_GET['dur'])) {

    $_SESSION['dur'] = (int) $_GET['dur'];
    $_SESSION['gDur'] = (int)  $_GET['gDur'];
}

answered Aug 07 '21 at 13:05

moDevsome

189
2
16

OK it is working for the new instance. But I want to send these data to all instances, which are already running. Is this possible? – Georgio Aug 07 '21 at 13:17
every client has a different session; if you want to share across all, you might have to look into using redis and on all request you read the same key from redis – Aug 07 '21 at 15:30

PHP how to store GET variables to use it later

1 Answers1