Oh, i know now that user can stop cookies. must much learn from here :).
but with this 

setcookie("user", "Alex Porter", time()+3600);
i think you can set the cookies "closed" count down.

But your problem is just want to write,when user left the site, 
maybe you must combine it with AJAX.

the logic is..
(copy from side forum)
==...What you should do is have a last_active field in your database 
and have a query to run and check last_active times.If the time 
is greater that 15 mins then run an update script to logout those users.==



Pete <[EMAIL PROTECTED]> wrote:                             In message <[EMAIL 
PROTECTED]>, HardyBoyz
 <[EMAIL PROTECTED]> writes
 >pratimadongare <[EMAIL PROTECTED]> wrote:                             hi 
 >ppl,
 > 
 > I am working on the session mgmt part in php.But could not find how to 
 > detect the closure of a session.
 
 >I think you better using cookies, not session. find the tutorial here
 >http://www.w3schools.com/php/php_cookies.asp
 
 Why do you say that?  
 
 I have just changed a site from cookies to sessions because
 a) users can stop cookies from working, they can't stop sessions from
 working.
 b) search engines don't seem to accept cookies.  Certainly slurp had
 difficulty in this area.
 
 Also, a cookie is never "closed", so how can you tell when a user has
 left the site?
 
 -- 
 Pete Clark
 
 Sunny Andalucia
 http://hotcosta.com/Andalucia.Spain
 
     
                                       


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