如何使用 PHP 从 MySQL 中选择最后 3 分钟的记录
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How to select last 3 minutes' records from MySQL with PHP
提问by Paraiba to Pusan
this is my SQL table:
这是我的 SQL 表：
+----------------+----------------+-----------+------------------------+
| User_Name | Password | IP | Login_Time |
+----------------+----------------+-----------+------------------------+
| rthrthrhrt | fjdjetje5e | 127.0.0.1 | 2011-09-24 18:02:06 |
| Empty | Empty | 127.0.0.1 | 2011-09-24 18:10:01 |
| Empty | Empty | 127.0.0.1 | 2011-09-24 18:04:00 |
| rsyrt | rwytw4364 | 127.0.0.1 | 2011-09-24 18:08:59 |
| eryrjrj5 | Empty | 127.0.0.1 | 2011-09-24 18:03:56 |
| reutreuetry | reuretyre | 127.0.0.1 | 2011-09-24 18:06:53 |
| Empty | rthrtrt | 127.0.0.1 | 2011-09-24 18:05:51 |
| djdjgdjh | 66735 | 127.0.0.1 | 2011-09-24 18:09:49 |
| fgjdgjdhg | Empty | 127.0.0.1 | 2011-09-24 18:07:46 |
| Empty | Empty | 127.0.0.1 | 2011-09-24 18:11:43 |
+----------------+----------------+-----------+------------------------+
I am developing a brute force addon with PHP and MySQL. I would like to select last 3 minutes' records.
我正在用 PHP 和 MySQL 开发一个蛮力插件。我想选择最后 3 分钟的记录。
for example (what i'd like to do?): time is now: 2011-09-26 9:45:00. i would like to select all records between 2011-09-26 9:45:00 and 2011-09-26 9:42:00.
例如（我想做什么？）：现在是：2011-09-26 9:45:00。我想选择 2011-09-26 9:45:00 和 2011-09-26 9:42:00 之间的所有记录。
回答by DhruvPathak
Use this sql query:
使用这个 sql 查询：
select * from myTable where Login_time > date_sub(now(), interval 3 minute) ;
回答by sreewathsa k
This query will work even if your table is not updated...
即使您的表未更新，此查询也将起作用...
select * from myTable where Login_time > select max(time) - interval 3 minute ;
