//...

public function LogIn($user, $password){

        if($user === $this->user && $password === $this->password){
            $_SESSION["LoggedIn"] = 1;
            return true;
        }

        else if($user === $this->user && $password === md5($this->password)){
            $_SESSION["LoggedIn"] = 1;
            return true;
        }

        else{
            return false;
        }

    }

//...