<?php

if (isset($_GET['source']) && $_GET['source']) {
    highlight_file(__FILE__);
    die;
}

header('Access-Control-Allow-Origin: example.com');
header('Access-Control-Allow-Headers: content-type');
header('Vary: Origin');

if (isset($_GET['apache_request_headers']) && $_GET['apache_request_headers']) {
    print_r(apache_request_headers());
}

if (isset($_GET['headers_list']) && $_GET['headers_list']) {
    print_r(headers_list());
}

exit(0);