public function checkLogin($secret_key) {
        global $db;

        if (isset($_COOKIE['HORBLECOOKIE'])) :
            $data = explode('-', $_COOKIE['HORBLECOOKIE']);
            $_SESSION['uid'] = $data[1];
            $_SESSION['hash'] = $data[0];
        endif;

        $this->uid = $_SESSION['uid'];
        $this->hashkey = $_SESSION['hash'];

        if (!isset($this->uid) || !isset($this->hashkey)) {
            $this->logout();
        } else {
            $check = sha1($this->uid . $this->ip . $secret_key);
            if ($check != $this->hashkey) {
                $this->logout();
            } else {
                $query = $db->execute("SELECT * FROM users WHERE id='".$this->uid."'") or die(mysql_error());
                $userarray = $db->fetchassoc($query);
                if ($db->numrows($query) == 0) {
                    $this->logout();
                }
                foreach($userarray as $key=>$value) {
                    $user->$key = $value;
                }
                $this->logged_in = 1;
                return $user;
            }
        }
    }

    public function login($email, $password, $keepmein, $secret_key) {
        global $msgError;

        $this->email = clean($email, 1, 1, 3);
        $this->password = clean($password, 1 , 1, 0);

        if (empty($this->email) || empty($this->password)) {

            $msgError = "You have left empty fields!";

            return;

        }

        $result = User::confirmUserPass($this->email, $this->password);

        if ($result == 1 || $result == 3) {

            $msgError = "Please enter valid email and password.";

            return;

        } elseif ($result == 2) {

            $msgError = "Your user account has not been activated yet!";

            return;

        }

        if (empty($msgError)) {

            $this->userinfo = User::getUserInfo('users', 'email', $this->email);

            $this->id = $_SESSION['uid'] = $this->userinfo['id'];
            $this->hashkey = $_SESSION['hash'] = sha1($this->id . $this->ip . $secret_key);

            User::updateUserField('users', 'email', $this->email, "last_login", $this->time);
            User::updateUserField('users', 'email', $this->email, "ip", $this->ip);
            User::updateUserField('users', 'email', $this->email, "times_logged", $this->userinfo['times_logged'] + 1);

            if ($keepmein) {

                setcookie("HORBLECOOKIE", $this->hashkey . '-' . $this->id, $this->time + COOKIE_EXPIRE);

            }

            $this->logged_in = 1;

            return true;

        } else {

            return false;

        }
    }