Session question

[manton]

Hello 🙂

Suppose we have a new session

<?php
// this starts the session
session_start();

// this sets variables in the session
$_SESSION['color']='red';
$_SESSION['size']='small';
$_SESSION['shape']='round';
print "Done";
?>

My question is do we have to write the above code in every page, or it is passed automatically?
I ask this because I have a page1 that has the above code, page2 is working retrieving the session's data, but page3 does not.

[Piranha]

Normally it should be possible to retrieve the values in every page. There are a few reasons why it won't work, some of them are that you have closed down the browser and started up again or that you have deleted cookies.

[manton]

Please, check if my code is right

page1 is a form

page2

session_start();
$_SESSION['ses_kod'] = $_POST['txtkod'];

It works up to here. Then I have a page 3

<?php session_start();
 ?>

Here is the problem, I cannot retreive any data.
Also, as I said page2 is working, but when loading the page itself (a link that points to the page itself) data is lost.

[Piranha]

It seems ok. Have you checked that $_POST['txtkod'] contains the value on page 2? Same with the session variable?

If you load page2 again it is possible that PHP tries to replace the old values in the session with new ones, that would cause the problem with reloading page2.

[rowanparker]

You haven't got anything on page3, you only have a session_start() you need to echo the data.

[manton]

Echo what?
That?

echo $_SESSION['ses_kod']; 

[rowanparker]

Yeah, does it work when that is in page 3?