[Resolved] header("location") and sessions

thefisherman

Just wondering,

I've set some session vars, which come back from PayPal's ipn, and then redirect a person to a different .php file where the vars are checked if they're set, and it appears that one (or more) of them is not, coz its redirecting to my error page, though they were set and registered right before the redirection (because there's no redirection if one of them isn't set).

I use:

header("location:[url]http://111.111.111.111/bla.php[/url]");

when the vars are set and that's it.

Does it affect sessions? i mean, the browser's alive and still on the same url.

i guess not, just can't figure it out really...

thefisherman

batman

The post is a lil confusing, but if I understand you then it should be more like:

if(isset($somebutton))
{
header("location:http://111.111.111.111/bla.php");
}
else if(isset($somebutton2))
{
header("location:http://111.111.111.111/bla2.php");
}
else
{
header("location:http://111.111.111.111/bla3.php");
}

thefisherman

Well,

actually, what i'm trying to say is:

i session_register variables when a transaction comes back ok through PayPal's ipn.

Then i do the header thing to a next page, and then on that page check those same variables, the ones i just registered on the previous page, in order to continue to yet another page (ok, it's a bit confusing, i see that now 🙂)

And then there are 2 ways:

vars exist -> go to download page
vars don't exist -> go back to transaction page

And i keep going to the transaction page.

Ok, does that make any sense?

thefisherman

Nate

Are you using session_start on each page you redirect to? If so, try printing the variables directly on all the pages to physically make sure they are going from one page to the next.

thefisherman

I use session_start() as the very first thing on every page.

And echo'ing the vars to see if they're set or not means actually making a transaction at PayPal, otherwise they're not set.

The vars are set when the script receives the vars from PayPal, redirects to the next page, so they are set! but on the next page they're not.

If i register a variable and fill it with something that came back from PayPal (empty or not), it would still be set right?

The funny thing is, i register vars on so many pages, and all of them stay alive with the session, except those.

It's going to PayPal and back, verifies the ipn vars, all's set, register, go to next page and gone....

........

thefisherman

batman

Can you post the code that sets the sessions, and the one that calls them as well?

thefisherman

yes,

but tomorrow,

i apologise, but it's almost 1:00 AM here, and my eyes are closing gradually....................

zzzzzzzzzzz

i'll post it tomorrow,

thanks so far for all your help!

thefisherman

Moonglobe

when you use header on the first page of a session, bad things happen because the browser never gets sent the cookie, and so the session is never set. you'll have to use javascript to redirect off the first page of a session (first call to session_start())

thefisherman

Hey,

well, i echoed the session_id to screen on the first page the customer sees coming back from PayPal, and it had changed.

That page says something like 'Thank you bla bla..' with a button to proceed to download page.

On that download page i echoed the session_id again, and it was the session_id the customer had in the first place!

So i moved a bit of database writing (which is based on session_id) to that page and the problem was solved.

Still strange though...

Thanks anyway!

thefisherman