$code = $_POST['code'];
At this time you can print out all the values of $_POST, and you can see it at this time. Of course, you can also print out the value of $_REQUEST.
$_REQUEST includes the values of $_POST and $_GET. All values in both states
Get the value named "code" in the form control and assign it to $code;
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
At this time you can print out all the values of $_POST, and you can see it at this time. Of course, you can also print out the value of $_REQUEST.
$_REQUEST includes the values of $_POST and $_GET. All values in both states
Get the value named "code" in the form control and assign it to $code;