Postman request to PHP using POST

Question

This is my code:

<?php
    if(isset($_POST["test"]))
        echo $_POST["test"];
    if(isset($_GET["test"]))
        echo $_GET["test"];
?>

My question is: why POST request doesn't work?

I have tried different parameters in the body and the header and nothing works.

GET request in Postman works:

POST request in Postman fails:

Answer 1

<?php 
  $name = $_POST['name'];
  echo $name;
?>