AJAX请求PHP文件，PHP文件不接收

Question

I'm trying to send a AJAX request to a PHP file. The PHP file does not receive the request.

I'm using the following code:

register.php:

$('#button_step1').click(function(e) {
        $.ajax({
            type: 'POST',
            url: '../core/views/cp/test.php',
            data: { message: 'works' },

            success: function(resp) {
                alert(resp);
            }
        });
        $('.step1 input').prop('disabled', true);
        window.location.replace("http://10.0.0.13/core/views/cp/test.php");
    });

test.php:

<?php

echo $_POST['message'];

?>

The message I get after I get redirected to test.php, "Notice: Undefined index: message in C:\xampp\htdocs\core\views\cp\test.php on line 3".

Issue 2:

When I require_once my register_view.php which includes the AJAX request into my register.php and let it send a AJAX request to the register.php file, it will show me the alert() which has all data from the whole PHP file, where it should only show 'works'.

Code,

register.php:

<?php

require_once '../core/init.php';

$_SESSION['message'] = $_POST['message'];
echo $_SESSION['message'];

require_once VIEW_ROOT . '/cp/register_view.php';

register_view.php:

$('#button_step1').click(function(e) {
        $.ajax({
            type: 'POST',
            url: '../core/views/cp/test.php',
            data: { message: 'works' },

            success: function(resp) {
                alert(resp);
            }
        });
        $('.step1 input').prop('disabled', true);
        //window.location.replace("http://10.0.0.13/core/views/cp/test.php");
    });

Answer 1

require_once VIEW_ROOT . '/cp/register_view.php'; // you are loading view there. you have to do something like this

 $a= $_POST['message'];
print_r(json_encode($a));exit;