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php数据库连接错误

程序员文章站 2022-05-18 13:49:51
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有代码如下:

$catid=intval($_REQUEST['catid']);
$sql_store = 'SELECT * FROM ecm_gcategory Where cate_id=$catid ORDER BY cate_id';
$my_category= DB::fetch_all($sql_store);

运行报如下错误:
SELECT * FROM ecm_gcategory Where cate_id=$catid ORDER BY cate_id


怎么解决哟?请高人指点!


回复讨论(解决方案)

报错如下:
1054) Unknown column '$catid' in 'where clause'
SELECT * FROM ecm_gcategory Where cate_id=$catid ORDER BY cate_id

$sql_store = "SELECT * FROM ecm_gcategory Where cate_id=$catid ORDER BY cate_id";
双引号!

单引号里面的变量不能被解析,需用双引号括起来。或者改成下面这样:
$sql_store = 'SELECT * FROM ecm_gcategory Where cate_id='.$catid.' ORDER BY cate_id';