ElggUser::isBanned PHP Method

    public function isBanned()
    {
        return $this->banned == 'yes';
    }

/**
 * Logs in a specified ElggUser. For standard registration, use in conjunction
 * with authenticate.
 * 
 * @see authenticate
 * @param ElggUser $user A valid Elgg user object
 * @param boolean $persistent Should this be a persistent login?
 * @return true|false Whether login was successful
 */
function login(ElggUser $user, $persistent = false)
{
    global $CONFIG;
    if ($user->isBanned()) {
        return false;
    }
    // User is banned, return false.
    if (check_rate_limit_exceeded($user->guid)) {
        return false;
    }
    // Check rate limit
    $_SESSION['user'] = $user;
    $_SESSION['guid'] = $user->getGUID();
    $_SESSION['id'] = $_SESSION['guid'];
    $_SESSION['username'] = $user->username;
    $_SESSION['name'] = $user->name;
    $code = md5($user->name . $user->username . time() . rand());
    $user->code = md5($code);
    $_SESSION['code'] = $code;
    if ($persistent) {
        setcookie("elggperm", $code, time() + 86400 * 30, "/");
    }
    if (!$user->save() || !trigger_elgg_event('login', 'user', $user)) {
        unset($_SESSION['username']);
        unset($_SESSION['name']);
        unset($_SESSION['code']);
        unset($_SESSION['guid']);
        unset($_SESSION['id']);
        unset($_SESSION['user']);
        setcookie("elggperm", "", time() - 86400 * 30, "/");
        return false;
    }
    // Users privilege has been elevated, so change the session id (help prevent session hijacking)
    session_regenerate_id();
    // Update statistics
    set_last_login($_SESSION['guid']);
    reset_login_failure_count($user->guid);
    // Reset any previous failed login attempts
    // Set admin shortcut flag if this is an admin
    if (isadminloggedin()) {
        global $is_admin;
        $is_admin = true;
    }
    return true;
}