public function register($user_id,$username,$first_name,$last_name) {
        $stmt = $this->db->prepare("INSERT INTO user ( user_id,username,first_name,last_name) 
        VALUES (?,?,?,?)");
        $stmt->bind_param($user_id,$username,$first_name,$last_name); 
        $result = $stmt->execute();
        if (!$result)return false;
        else   return true;
        $stmt->close();
    }

$stmt->bind_param("ssss",$user_id,$username,$first_name,$last_name);

#301 redirect
Redirect 301 /services/%D1%96mplantacz%D1%96ya.html /services/