$username = trim(input('post.username'));
dump($username);
Why can’t I print out this $username after following this teacher’s code? The value of
Print the post separately to see if there is a value. If not, it is a front-end problem. Take a look at the code where the data is submitted
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Print the post separately to see if there is a value. If not, it is a front-end problem. Take a look at the code where the data is submitted