ini_set('session.cookie_lifetime', 0);

來源 Cross-Browser Session Starter

[php]

<?php

// $expire = the time in seconds until a session have to expire

function start_session($expire = 0) {

    if ($expire == 0) {

        $expire = ini_get("session.gc_maxlifetime");

    } else {

        ini_set("session.gc_maxlifetime", $expire);

    }

    if (empty($_COOKIE['PHPSESSID'])) {

        session_set_cookie_params($expire);

        session_start();

    } else {

        session_start();

        setcookie("PHPSESSID", session_id(), time() + $expire);

    }

}

// this example will start a session with an expire time given by the php configuration

start_session();

// start_session(600) will start a session which will expire after 10 minutes (60*10 seconds)

?>

[/php]