The insertion into the database failed, please tell me how to deal with it, thank you
Notice This kind of error can prevent it from being displayed. Even if you do not pass parameters, the page can run normally error_reporting(E_ALL || ~E_NOTICE); Add to the front of the code
Check whether your POST['hadden'] has passed a value
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Notice This kind of error can prevent it from being displayed. Even if you do not pass parameters, the page can run normally error_reporting(E_ALL || ~E_NOTICE); Add to the front of the code
Check whether your POST['hadden'] has passed a value