I have a login system in PHP. I save the user's login and password in a session.
Start it as follows:
// Inicia a sessão
session_start();
My question and how to do this session has a duration of 30 minutes, ie if the user leaves the page stopped for 30 minutes the session has to be deleted.
You can use session_set_cookie_params to "set" a lifetime for the session
$time = strtotime('+30 minutes', 0);
session_set_cookie_params($time);
session_start();
See if this helps you:
session_start();
if (isset($_SESSION['atividade']) && (time() - $_SESSION['atividade'] > 1800)) {
session_unset();
session_destroy();
}
$_SESSION['atividade'] = time();