if($stmt == FALSE)
        {
            die($this->conn->error);
        }else {
        $stmt->bind_param("iii", $card_id, $card_type_id, $user_id);
        if ($stmt->execute()) {
            $res = array();
            $stmt->bind_result($id, $card_name, $category, $card_desc, $card_picture, $status, $created_at);
            // TODO
            // $card = $stmt->get_result()->fetch_assoc();
            $stmt->fetch();
            $res["id"] = $id;
            $res["card_name"] = $card_name;
            $res["category"] = $category;
            $res["card_desc"] = $card_desc;
            $res["card_picture"] = $card_picture;
            $res["status"] = $status;
            $res["created_at"] = $created_at;
            $stmt->close();
            return $res;
        } else {
            return NULL;
        }
    }
    }`

`$app->get('/cards/users/:card_id', 'authenticate', function($card_id, $card_type_id) {
        global $user_id;
        $response = array();
        $db = new Card();

        // fetch card
        $result = $db->getCard($card_id, $card_type_id, $user_id);

        if ($result != NULL) {
            $response["error"] = false;
            $response["id"] = $result["id"];
            $response["card_name"] = $result["card_name"];
            $response["category"] = $result["category"];
            $response["card_desc"] = $result["card_desc"];
            $response["card_picture"] = $result["card_picture"];
            $response["status"] = $result["status"];
            $response["createdAt"] = $result["created_at"];
            echoRespnse(200, $response);
        } else {
            $response["error"] = true;
            $response["message"] = "The requested resource doesn't exists";
            echoRespnse(404, $response);
        }
    });`