AJAX PHP Database query not working

Question

I am attempting to learn AJAX, but it is not going so well. On my site users can request training. Once the request is submitted instructors should be able to manage the request from this page. However when trying to "claim" a request, the AJAX does not function correctly, with no errors.

• The inner html does not change
• The database entry is not changed
• I know the php file is being run as I had previously received errors

PHP/HTML/Javascript/AJAX

<table class="sidebar" style="width:50%;">
    <tr><th>My Open Requests</th></tr>
    <div id="myopen">
    <?php
        if(!empty($myopen)){
            foreach($myopen as $request){
                $date = date('F d Y - gA', $request['submitted']);
                echo '<tr><td>'.$request['vid'].' - '.$request['type'].' - '.$request['comments'].' - '.$date.'</td></tr>';
            }
        }
        else{
            echo '<tr><td>NONE</td></tr>';
        }
    ?>
    </div>
</table>

<table class="sidebar" style="width:50%;">
    <tr><th>My Closed Requests</th></tr>
    <?php
        if(!empty($myclosed)){
            foreach($myclosed as $request){
                $date = date('F d Y - gA', $request['submitted']);
                echo '<tr><td>'.$request['vid'].' - '.$request['type'].' - '.$request['comments'].' - '.$date.'</td></tr>';
            }
        }
        else{
            echo '<tr><td>NONE</td></tr>';
        }
    ?>
</table>

<table class="sidebar" style="width:50%;">
    <tr><th>Unclaimed Requests</th></tr>
    <div id="unclaimed">
    <?php
        if(!empty($unclaimed)){
            foreach($unclaimed as $request){
                $date = date('F d Y - gA', $request['submitted']);
                $id = $request['id'];
                $name = "'".$this->registry->getData('firstname').' '.$this->registry->getData('lastname')."'";
                echo '<tr><td>'.$request['vid'].' - '.$request['type'].' - '.$request['comments'].' - '.$date.' <a href="" onclick="claim('.$id.','.$name.')">Claim</a></td></tr>';

            }
        }
        else{
            echo '<tr><td>NONE :)</td></tr>';
        }
    ?>
    </div>
</table>
<table class="sidebar" style="width:50%;">
    <tr><th>Request Log</th></tr>
    <?php
        if(!empty($claimed)){
            foreach($claimed as $request){
                echo '<tr><td>'.print_r($request).'</td></tr>';
            }
        }
        else{
            echo '<tr><td>NONE</td></tr>';
        }
    ?>
</table>
<script>
    function claim(id, name){
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function() {
            if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
                document.getElementById("myopen").innerHTML = xmlhttp.responseText;
            }
        };
        xmlhttp.open("POST", "/lib/AJAX/trainingRequestManage.php", true);
        xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        xmlhttp.send("id="+id+"&name="+name);
    }
</script>

trainingRequestManage.php

<?php
$id = $_POST["id"];
$id = $_POST["name"];

include('http://www.ivaoxa.org/config/db.php');

$sql = "UPDATE trainingRequests SET trainer='".$name."' WHERE id=".$id;

// Prepare statement
$stmt = $db->prepare($sql);

// execute the query
$stmt->execute();

echo 'test';

db.php

<?php
$db = new PDO('mysql:host=localhost;dbname=xx;charset=utf8', 'xx', 'xx');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

Answer 1

Unless http://www.ivaoxa.org/config/db.php is served as a plain file the following line is never going to work:

include('http://www.ivaoxa.org/config/db.php');

More info: http://php.net/manual/en/function.include.php