php - 按id查询订单

Question

我正在处理以下查询：

$query2 = 'SELECT * FROM user_uploads WHERE id_user = '.$id_user;

我想通过以下方式订购它：ORDER BY upload_id DESC - 但我不知道如何做到这一点，或者在这种特殊情况下将代码放在哪里。

有人可以帮我吗？谢谢

Answer 1

做就是了 ：

$query2 = 'SELECT * FROM user_uploads WHERE id_user = '.$id_user.' ORDER BY upload_id DESC';

Answer 2

$query2 = 'SELECT * FROM user_uploads WHERE id_user = '.$id_user.' ORDER BY upload_id DESC;

Answer 3

虽然你可以做

$query2 = "SELECT * FROM user_uploads WHERE id_user = $id_user ORDER BY upload_id DESC";

您绝对应该查看参数化查询。谷歌搜索 PDO！