How to solve the problem with AJAX and PHP?

Question

PHP

Hello.

I have a list of news in my project and on each such news there is a “Participate” button, when clicked, the following should happen - JS (AJAX) will process the click of this button and pass a certain value to a PHP script that will add a user ID to the database, which pressed this button.

In the process, I had a problem that if you call this file via AJAX, then it will no longer be possible to connect third-party files in the file, which is called via AJAX . That is, it is impossible to call a function from another file that is connected to what is called via AJAX.

Right now I have this code:

<script>
function AjaxFormRequest(id)
{
    $.ajax({
      type: "POST",
      url: "system/user_request.php",
      data: {id: id},
      success: function(data){alert(data)}
    });
}
</script>

And a file that should call the add function to the database.

<?php
require_once 'engine.php';
$site->userRequestInProject($_POST['id']);
?>

In the second file, I'm trying to call the userRequestInProject function, and it should already add the user ID to the database, but for some reason, when this function is called, nothing happens at all (I even tried just echo "Test"; , also zero emotions)

Moreover, if in the file , which is called via AJAX, just write for example echo "Test";, then this works.

Answer 1

And the AJAX request is sent correctly, haven't you looked? Well, there is no chance 404 or 500? And does the send work at all?

Answer 2

Error in require 'engine.php', check path to it or paths in it

Answer 3

Thanks to all! Problem solved.