Maison >développement back-end >tutoriel php >php数据库连接错误
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=$catid ORDER BY cate_id
怎么解决哟?请高人指点!
报错如下:
1054) Unknown column '$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';