I want the session to expire after 30 minutes

[Dr_Flink]

I have a guestbook where I want the users to be able to delete their own posts. This is a part of my code:

session_cache_expire(30);
session_start();
	$_SESSION[('unique_id')] = session_id();
	$sessionen = $_SESSION[('unique_id')];

// Here is decided if the user is able to delete the post
if ($sessionen == $rad[sess_id]) {
print ("<a href=gastbok.php?remove=$rad[id]><img src=../Ikoner/delete.gif alt=Delete this post width=27 height=14 border=0 align=middle onclick=\"return raderaInlagg()\"></a>");
}

The thing is that I want the session to expire after 30 minutes (if the user forgets to close down the browser), but I can't get it to work. What am I doing wrong?

[drew010]

try adding

ini_set("session.cookie_lifetime", 1800);

and see if it helps.

[Dr_Flink]

I tryed this, but it didn't work. The "delete image" is still there.

session_cache_expire(1);
session_start();
	$_SESSION[('unique_id')] = session_id();
	$sessionen = $_SESSION[('unique_id')];
ini_set("session.cookie_lifetime", 60);

I'm wondering, do I get a new session id after the present id has expired?

[drew010]

yea a new session id is generated after one expires and the user tries to resume.

[Dr_Flink]

...ok, then why doesn't it work??? :queasy:

[Dr_Flink]

Now I have searched and read all posts including 'session_cache_expire', and it seams that I'm not the only one having problems.... Why, oh why doesn't it work???