Session Variables Not Carrying Over to Other Pages

Question

My first page is:

<?php

session_start();

$_SESSION['test'] = 'testSession';

?>

Other page is:

<?php

session_start();

echo $_SESSION['test'];

?>

There is no output on the second page. The error log outputs:

[30-Oct-2013 12:13:53] PHP Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent

Are there any ideas as to what the problem might be? The session variables can be outputted fine on the first page (when I tested), but not on the second. Thank you.

Is this the 1st code at the top of your page? Do you have a space, or line return before your opening php tag - `_ — Sean, Oct 30 '13 at 18:22
One more thing - You should pass SSID somehow to that another page. GET. POST. COOKIES... — Kamiccolo, Oct 30 '13 at 18:39

score 2 · Accepted Answer · answered Oct 30 '13 at 18:41

If you are using sessions in your application then you must start the session at the very top of your page, you must avoid spaces or extra line spaces after

<?php

and

session_start();

Write your code as follows:

<?php
session_start();

$_SESSION['test'] = 'testSession';

?>

and on second page,

<?php
session_start();

echo $_SESSION['test'];

?>

Hope this solves the problem, and if still not then you may use following technique:

<?php
ob_start();
session_start();

$_SESSION['test'] = 'testSession';

?>

and on second page,

<?php
ob_start();
session_start();

echo $_SESSION['test'];

?>

Thanks, but I need to ask what is the `ob_start();`? – Daniel L. VanDenBosch Aug 31 '20 at 19:35 — Daniel L. VanDenBosch, Aug 31 '20 at 19:35

Session Variables Not Carrying Over to Other Pages

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