如何防止此查询的 sql 注入?

how to prevent sql injection from this query?(如何防止此查询的 sql 注入?)

问题描述

我正在使用 Yii 1，我想构建以下查询:

I am using Yii 1, I want to build the following query:

$a = Model::model()->findAllBySql(
              'SELECT * FROM table WHERE name like "%'.$_GET['name'].'%"'
              );

为了防止sql注入，我是这样写的:

To prevent the sql injection I wrote it as follow:

 $a = Model::model()->findAllBySql(
                      'SELECT * FROM table WHERE name like "%:name%"',
                      array("name"=>$_GET['name'])
                      );

但它没有返回任何数据.此查询是否有任何错误?

but it returned no data. Are there any errors in this query ?

推荐答案

当占位符被引用时，它不是占位符，而是字面值.试试这个方法:

When the placeholder is quoted it is not a placeholder, it is the literal value. Try it this way:

$a = Model::model()->findAllBySql(
                      'SELECT * FROM table WHERE name like :name',
                      array(":name"=> '%' . $_GET['name'] . '%')
                      );

驱动程序当前自动附加冒号，但将来可能不会，最好让名称与占位符匹配.

The driver currently auto-appends the colons but it might not in the future, it is best to have the name match the placeholder.

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