URGENT : Session Problem

Anon

I have the following lines of code in a script to store a sesison level variable :

$a="hello";

session_start();
session_register("a");

But, whenever I run the php script (on PWS/Win98) I get the following warning messages and the session variable is never created :

Warning: Cannot send session cookie - headers already sent by (output started at D:\test\Index.php:2) in D:\test\Index.php on line 5

Warning: Cannot send session cache limiter - headers already sent (output started at D:\test\Index.php:2) in D:\test\Index.php on line 5

Warning: open(/tmp\sess_47f63190e0ceb03c4a33a53daea2b064, O_RDWR) failed: m (2) in D:\test\Index.php on line 5

Any help is appreciated. Also I would like to know whether there is a startup init file/script in PHP like there is a global.asa in ASP.

Thanks.

Anon

I'm no pro but I ran into this problem and in my limited experience it means that you are trying to send headers after the http headers have already gone. When you do session stuff (again, in my limited experience) the php headers have to be first.

Anon

It seems that the path to your tmp-dir is incorrect. Please check your php.ini for this setting, because it's probably set for a *nix system and not for the win32 environment.

Session data is stored in cookies, and cookies have to be set BEFORE any other data is sent to the browser. Because session_start() generates an error message (which is sent to the browser...), session_register() will output an error too, because the headers have already been sent.

That's my point of view on this problem and I hope it helps.

Grtz,

Stephan

Anon

What it's saying, is that you printed data to the page before you printed out the sessions, the sessions MUST be first..before anything that goes out to the user, or anything to the page itself.

Anon

And remember if you have a linebreak or a space in your page it will stop headers being sent... I have done this many of times

Anon

I got such "can't send header ...."errors,too.

could you please show me some possible misuse of session management when getting such errors except /tmp directory error?

Thanks a lot.