Web Development

<?php
header("Content-Type: application/json");
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, OPTIONS");
require_once('/var/www/global.php');
$timeline = "select thread.threadid, post.userid, post.username, thread.title, post.dateline,post.postid, thread.firstpostid from thread inner join post ON post.threadid = thread.threadid  order by dateline desc limit 100";

$results = $vbulletin->db->query_read($timeline);
while ($item = $db->fetch_array($results)) {
    if($item['postid'] == $item['firstpostid'])
    {
    $item['title'] =  $item['username'].' started discussion '.$item['title'];
    }
    else{
    $item['title'] =  $item['username'].' replied to '.$item['title'];
    }
    $item['when'] =  date("D M j G:i:s T Y", $item['dateline']); 
    $final[] = $item;

}

$serialize = json_encode($final);
echo  $serialize;