Pear::Auth and idle

Hello, I try use Pear::Auth http://margusja.101d.ee/Pear_Auth/ user: test passw: test Pear::Auth manual say about function sessionValidThru(): This method returns the time in seconds after which the idle time of the current authentication session has reached its limit, which will cause the user to be logged out automatically. If no maximum idle time is set, which is the default configuration of PEAR::Auth, this method will return 0. I use deffault settings, that mean sessionValidThru() must return 0? My code: <?php require_once "Auth.php"; function loginFunction() {

    echo "<form method=\"post\" action=\"" . $_SERVER['PHP_SELF'] . "\">";
    echo "<input type=\"text\" name=\"username\">";
    echo "<input type=\"password\" name=\"password\">";
    echo "<input type=\"submit\">";
    echo "</form>";

} $params = array(

            "dsn" => "mysql://xxx:xxx@localhost/pear_auth",
            "table" => "auth",
            "usernamecol" => "username",
            "passwordcol" => "password"
            );

$a = new Auth("DB", $params, "loginFunction"); # Logout if ($logout) $a->logout(); $a->start(); # Secure area if ($a->checkAuth()) {

        echo "You are in.<BR>";
        echo "<a href=\"?logout=true\">Log out</a>";
        echo "<hr>";

        # Debug area
        echo "Text from <a
href=\"http://pear.php.net/manual/en/package.authentication.auth.auth.sessionvalidthru.php\">manual</a> ->  This method returns the time in

time of the current authentication session has reached its limit, which will cause the user to be logged out automatically. If no maximum idle time is set, which is the default configuration of PEAR::Auth, this method will return 0.<BR><BR>"; echo "I use default settings!!! Why sessionValidThru not 0!!!???<BR>";

        echo "<b>sessionValidThru</b> -> ".$a->sessionValidThru();

} ?> Thanks for the help. ~Margusja