What should I do if php cannot capture data?

Solution to the problem that php cannot capture data: 1. Use "$parm=file_get_contents("php://input");" on the server; 2. The front-end sends a request header with code such as "method: 'POST',header:{'Content-Type':'application/x-www-form-urlencoded',},".

The operating environment of this tutorial: Windows 7 system, PHP version 8.1, Dell G3 computer.

What should I do if php cannot capture the data?

Using $_POST['email'] fails to obtain the request data.

$parm=file_get_contents("php://input");//可以获取到请求头Content-Type: application/json
var_dump($parm);
var_dump($_POST['email']);//请求头Content-Type: application/x-www-form-urlencoded
var_dump($_POST['password']);//请求头Content-Type: application/x-www-form-urlencoded

Official website$_POST description

When the Content-Type of the HTTP POST request is application/x-www-form-urlencoded or multipart/form-data, the variable will be in the form of an associative array Pass in the current script

Solution 1: Use on the server

$parm=file_get_contents("php://input");//可以获取到请求头Content-Type: application/json

Solution 2: Send request headers to the front end

method:'POST',
header:{
'Content-Type':'application/x-www-form-urlencoded',
},

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