如何为用户获取最后的插入值?

I have this MYSQL table...

我有这个MYSQL表…

+----+---------+-----------+---------------+------------+---------------------+
| id | user    | val1      | val2          | val3       | last_modified_date  |
+----+---------+-----------+---------------+------------+---------------------+
|  1 |    0001 |         1 |             1 |          1 | 2014-03-31 16:53:29 |
|  2 |    0100 |         1 |             1 |          1 | 2014-04-01 10:32:50 |
|  3 |    0200 |         1 |             0 |          0 | 2014-04-01 10:34:13 |
|  4 |    0200 |         1 |             1 |          1 | 2014-04-01 14:43:47 |
+----+---------+-----------+---------------+------------+---------------------+
+---