<option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> <button type="submit" name="purchase" class="btn btn-default" style="margin-left: 80px;">Purchase</button> </form> </div> <?php if (isset($_POST['purchase'])) { $sale = new SALE(); $stmt = $sale->runQuery("SELECT * FROM sale WHERE user_id=" . $userRow['user_id'] . " and ticket_id=" . $_GET['tid']); $stmt->execute(); $saleRow = $stmt->fetch(PDO::FETCH_OBJ); if ($saleRow) { $sale->update($userRow['user_id'], $_GET['tid'], $_POST['quantity']); echo "Updated: " . $ticketRow->name; } else { $sale->register($userRow['user_id'], $ticketRow->ticket_id, $_POST['quantity']); echo "Purchased: " . $ticketRow->name; } } } ?> </div> </div> <script src="bootstrap/js/bootstrap.min.js"></script>