Instr问题 [英] Instr problems

问题描述

我有一个页面使用会话变量来存储像购物车这样的项目，这一切都很好，但我想编写一个删除项目的按钮，我有一个页面，我已经设置了删除功能并尝试了以下代码

I have a page that uses a session variable that stores items like a shopping cart, all this works fine but i am trying to code a button that removes an item, i have a page that i have set up for the remove function and have tried the following code

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推荐答案

作为最小量的参数，你需要为instr（）提供要搜索的字符串和要查找的字符串。


所以：

As a minimum amount of arguments, you need to provide instr() with the string to search and the string to find.

So:

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我理解这一点，但它使用会话变量的sql语句返回错误??

I understand this but it is returning an error with the sql statement that uses the session variable??

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你可以在删除项目之前和之后发布会话变量，这样我可以看看吗？


我可能只需稍微修改循环（我没有测试它！）


别介意。


我从这里复制了代码并对其进行了修改。

Can you post here the session variable before and after the items have been removed so I can take a look see?

I probably just need to modify the loop slightly (I didn''t test it!)

Never mind that.

I copied the code from here and modified it.

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