Question

我正在使用基于CodeIgniter构建的这个头像社区引擎，除商店系统外，一切正常。

每当我尝试购买物品时，我都会得到这个：

遇到错误

shop_item_id必须有效

我已将问题缩小到这段代码：

public function purchase_item()
{
    $shop_item_id = $this->input->post('item_id');

    if(!is_numeric($shop_item_id)) show_error('shop_item_id must be valid');

    $shop_item_query = $this->db->join('avatar_items', 'avatar_items.item_id = shop_items.item_id')->get_where('shop_items', array('shop_item_id' => $shop_item_id));

    if($shop_item_query->num_rows() > 0):
        $shop_item_data = $shop_item_query->row_array();
    else:
        show_error('shop_item could not be found.');
    endif;

    $shop_id = $shop_item_data['shop_id'];

    if ( ! $shop_data = $this->cache->get('shop_data_'.$shop_id)):
        $shop_data = $this->db->get_where('shops', array('shop_id' => $shop_id))->row_array();
        $this->cache->save('shop_data_'.$shop_id, $shop_data, 2400);
    endif;

解决方案是什么？

p.s：我正在使用crysandrea（https://github.com/tylerdiaz/Crysandrea）的脚本。我的任务需要这个。

以下是代码：

        <form action="/shops/purchase_item/" method="POST">
        <input type="hidden" name="item_id" value="<?php echo $item_data['shop_item_id'] ?>" />
        <button type="submit" class="main_button">Purchase item</button>
    </form>

Answer 1

你忘记了分号。现在尝试以下代码

  <form action="/shops/purchase_item/" method="POST">
        <input type="hidden" name="item_id" value="<?php echo $item_data['shop_item_id']; ?>" />
        <button type="submit" class="main_button">Purchase item</button>
    </form>

Answer 2

您应该在函数

中编写此代码

 if(!is_numeric((int)$shop_item_id)) show_error('shop_item_id must be valid');

shop_item_id必须有效

2 个答案: