Session Errors

Anon

Ok ... I have a session error when I call a page which has session. It say something like this:

"...headers already sent..."

I couldn't figure out what it is... someone please tell me what I possibly did wrong?

Thanks,

Chris

amcgrath

A script has already begun sending data to the browser, it could be anything, but check for spaces in the top half of your code...

Anon

Hello again Allen,

Ok... well, I put the session_start(); and session_register("variable") up there, now everything is fine... BUT, I have the same different problem... I have another "header already sent" problem on line 75 which is this line below:

header("Location: http://main.php");

What's the problem?

Thanks

Chris

amcgrath

It sounds like you are sending output back to the browser, and then attmepting to set your sess vars... for example, this would not work:

echo "hello";
set_cookie("blah");

while this will:
set_cookie("blah");
echo "hello";

Check the display order you have, and rearrange accordingly.

sevensoft

Somewhat similar.

Normally you send something (whether or not you know it, but each time you make an http connection you send something) like the following:

POST /cgi-bin/log.cgi HTTP/1.0
Host: www.livejournal.com
Content-type: application/x-www-form-urlencoded
Content-length: 34

mode=login&user=test&password=test

now, that is for a form being sent, but the same idea applies to html being sent.. and that first block of text is called the headers.. they must be sent first, once those are sent, then your data (in your case, the html file) is sent..

so what you are trying to do, is set a value that should be with the headers, after they have been sent (and set).. not legal 🙁

so any of your session info must be put towards the top of your file, before really anything else..

(if i've got my thinking cap on right that is.)

-ken