[RESOLVED] Redirect losing SESSION data

[dmacman1962]

Happy new year everyone!

I am trying to do a redirect to a another site and I keep losing the SESSION data whether I use header or a meta redirect.

Here is the header code I am trying:

//referral site code
session_start();

$_SESSION['FTCN'] = 2;

$url = 'http://www.oursite.com/test.php';
header('Location: '.$url); 
exit;

And the test.php code:

//test page
session_start();
$_SESSION['Server'] = $_SERVER['HTTP_REFERER'];

echo '$_SESSION[\'Server\'] = ' . $_SESSION['Server'] . '<br><br>';
echo '$_SESSION[\'FTCN\'] = ' . $_SESSION['FTCN'] . '<br><br>';
die();

And I also tried:

//referral site code
echo '<meta http-equiv="Refresh" content="0; URL=http://www.oursite.com/test.php">'; //send them to the form

I am stumped.

Thanks in advance,
Don

[NogDog]

See if this helps:

//referral site code
session_start();

$_SESSION['FTCN'] = 2;

session_write_close(); // <------------------<<<<

$url = 'http://www.oursite.com/test.php';
header('Location: '.$url);
exit;

[NogDog]

I just reread your post, and if you expect to see the data on a different domain, that will be a problem as the session cookie is domain-specific.

[dmacman1962]

That explains that, and as you stated, it did not work.

Is there a method to auto POST a form so when they go to my referral site, it redirected them with a POST or GET then I could get the variable from there?

Thanks,
Don

[bretticus]

Do your websites (at different domains) share a common database (or even a LAN)? If so, you can store the sessions in a database and pass the session token in the URL.

[dmacman1962]

I can do that and it will resolve my issue. I did not want to put in a hyperlink and was looking for a 'cleaner' solution.

I can store the session_id and grab it at the new location.

Thanks,
Don

[bretticus]

dmacman1962;10898604 wrote:

I can store the session_id and grab it at the new location.

How will you keep session state from one site to the other without passing the session id in the URL or http header? Not saying you can't do it. I'm just curious how you are planning to go about it.

[dmacman1962]

I dont know if this will work, but I was going to get the session_id from the referral site, write it to the database sessions table (based on the link you sent me), then get the session_id when they come to the final site. Query the database and if the id exists, set the FTCN session to 2.

Does that make sense or is it not viable and or is there a better way?

Thanks,
Don

[bretticus]

So, like this????

<?php
//referral site code 1
session_start(); 

$_SESSION['FTCN'] = 2; 

$url = '/redirector.php?' . session_name() . '=' . session_id(); 
header('Location: '.$url); 
exit;

//referral site code 2
session_start();

$url = 'http://www.oursite.com/test.php'; 
header('Location: '.$url); 
exit;

//landing site code 1

$referrer = $_SERVER['HTTP_REFERER'];
if ( strpos($referrer, session_name()) !== false ) {
	$parsed = parse_url($referrer);
	list(,$sessionid) = explode('=', $parsed['query']);
	session_id($sessionid);
}
session_start(); 

echo $_SESSION['FTCN'];
exit;
?>

[dmacman1962]

That is different (with the 2nd referral page) than I was trying.

I did exactly what you show, and I did not get a value for the FTCN session.

So in the Landing site code, strpos test, I put an ...

if ( strpos($referrer, session_name()) !== false ) {
    echo 'Passed<br>';
    $parsed = parse_url($referrer);
    list(,$sessionid) = explode('=', $parsed['query']);
    session_id($sessionid);
}

And it does not echo, so that is failing and as you would expect, if I echo the ...

session_start();

echo '$_SESSION[\'FTCN\'] = ' . $_SESSION['FTCN'];
exit;

... I get no value.

Thoughts?

Thanks,
Don

[bretticus]

Could be a number of things, but the 2 that stand out in my mind are:

1. Do you have sessions writing to a shared database?
2. Does echoing session_name() render the same value for both websites?