如何清除准备语句中的单引号？

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问题描述

我的查询如下：

$group_id = $session['group_id'];

$sql = "SELECT *
        FROM notification 
        WHERE group_id IN(?)";

$result = $this->db->query($sql, array($group_id))->result_array();

当我添加： echo $ this-> db-> last_query （）; die（）; ，结果如下：

When I add : echo $this->db->last_query();die();, the result is like this :

SELECT * FROM notification WHERE group_id IN('1,13,2')

我想删除单引号，是这样的：

I want remove single quotes in order to the result is like this :

SELECT * FROM notification WHERE group_id IN(1,13,2)

如何删除prepare语句中的单引号？

How to remove single quotes in prepare statement?

推荐答案

您可以如下：

$ session ['group_id'] 可能是一个字符串。因此您可以将该字符串转换为数组。

$session['group_id'] is probably a string. so you can convert that string into an array.

$group_id = explode(",", $session['group_id']);

现在$ group_id已经是一个数组。因此，在下面的语句中，用'$ group_id'替换 array（$ group_id）：

Now $group_id is already an array. So, in below statement replace array($group_id) with just '$group_id':

$result = $this->db->query($sql, array($group_id))->result_array();

所以整个代码如下：

$group_id = explode(",", $session['group_id']);

$sql = "SELECT *
        FROM notification 
        WHERE group_id IN(?)";

$result = $this->db->query($sql, array($group_id))->result_array();