LoginModel::setSuccessfulLoginIntoSession PHP Method

    public static function setSuccessfulLoginIntoSession($user_id, $user_name, $user_email, $user_account_type)
    {
        Session::init();
        // remove old and regenerate session ID.
        // It's important to regenerate session on sensitive actions,
        // and to avoid fixated session.
        // e.g. when a user logs in
        session_regenerate_id(true);
        $_SESSION = array();
        Session::set('user_id', $user_id);
        Session::set('user_name', $user_name);
        Session::set('user_email', $user_email);
        Session::set('user_account_type', $user_account_type);
        Session::set('user_provider_type', 'DEFAULT');
        // get and set avatars
        Session::set('user_avatar_file', AvatarModel::getPublicUserAvatarFilePathByUserId($user_id));
        Session::set('user_gravatar_image_url', AvatarModel::getGravatarLinkByEmail($user_email));
        // finally, set user as logged-in
        Session::set('user_logged_in', true);
        // update session id in database
        Session::updateSessionId($user_id, session_id());
        // set session cookie setting manually,
        // Why? because you need to explicitly set session expiry, path, domain, secure, and HTTP.
        // @see https://www.owasp.org/index.php/PHP_Security_Cheat_Sheet#Cookies
        setcookie(session_name(), session_id(), time() + Config::get('SESSION_RUNTIME'), Config::get('COOKIE_PATH'), Config::get('COOKIE_DOMAIN'), Config::get('COOKIE_SECURE'), Config::get('COOKIE_HTTP'));
    }