按ID排序查询

Question

我正在处理以下问题：

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

我想订购它：ORDER BY upload_id DESC - 但我仍然坚持如何做到这一点，或者将代码放在这个特殊情况下的位置。

是的，有人能帮帮我吗？ 感谢

Answer 1

只是做：

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

虽然你可以做到

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

你一定要查看参数化查询。 Google for PDO！