当数据库的值发生变化时 , php能对数据进行修改或者其他操作 。注意 : 这里只是说动态监听 , 而并非MySQL触发器之类的意思 !
How to use PHP to monitor the value changes of the database?-PHP Chinese website Q&A-How to use PHP to monitor the value changes of the database?-PHP Chinese website Q&A
Look around and learn.
可以将状态改变记录到文件里去，不断地检测文件内容
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
How to use PHP to monitor the value changes of the database?-PHP Chinese website Q&A-How to use PHP to monitor the value changes of the database?-PHP Chinese website Q&A
Look around and learn.
可以将状态改变记录到文件里去，不断地检测文件内容