trigger action upon session timout

[Anon]

Is it possible to execute some php code if session has timed out ?
This is needed when user doens't log out
that usual way and simple closes a browser.

[Anon]

Example:

$timeoutseconds = 300;
$timestamp = time();
$timeout = $timestamp-$timeoutseconds;

$dbtimestamp = mysql_db_query("SELECT timestapme FROM table");

if ($dbtimestamp<$timeout) {

...execute code here...

}

$dbtimeout = mysql_db_query("DELETE timestamp FROM table WHERE timestamp<$timeout");
if(!($dbtimeout)) {
print "Timeout Failed > ";
}

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something like that...