我创建了一个具有多个选择值的搜索面板，搜索面板正常工作，但问题是： - 我的数据库表：产品
sno | productid | shopname
-----------------------------
1 | one | oneshop
-----------------------------
2 | One | twoshop
-----------------------------
3 | Two | oneshop
-----------------------------
4 | Three | oneshop
-----------------------------
5 | Two | twoshop
用户产品在搜索面板中选择多个。
现在在搜索面板中搜索用户
用户选择产品（一，二，theee）
查询是在搜索后显示所有结果
SELECT * from product where productid = '$productselect' AND shopname = '$shopfoundproduct'
结果发现5
Result one
productid | shopname
----------------------------
one | oneshop
Result two
productid | shopname
----------------------------
one | twoshop
Result three
productid | shopname
----------------------------
two | oneshop
Result four
productid | shopname
----------------------------
two | twoshop
Result five
productid | shopname
----------------------------
three | oneshop
我希望结果是：
结果发现2
result one
productid | shopname
--------------------------
one | oneshop
--------------------------
two | oneshop
--------------------------
three | oneshop
result one
productid | shopname
--------------------------
one | twoshop
--------------------------
two | twoshop
谢谢......