Convert Wordpress /feed/ XML to JSON and make CORS

demo.js

// This uses jQuery! Get it at https://code.jquery.com
$(document).ready(function () {
                $.ajax({
                    url: 'https://Website.com/wp-feed-xml-2-json.php',
                    type: 'GET',
                    dataType: "json",
                    success: DisplayAllOps
                });
            });

            function DisplayAllOps(data) {
                //console.log(data);
                $.each(data.channel.item, function (i, item) {
                    console.log(item.title);
                });
            }

wp-feed-xml-2-json.php

<?php
// This uses cURL! Be sure to have it enabled! Check with a PHPINFO script.
header("Access-Control-Allow-Origin: *");
header("Content-Type: application/json; charset=UTF-8");

error_reporting(E_ALL);

function GetURLData($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}

function XMLtoJSON($url) {
    $fileContents = GetURLData($url);
    $xml = simplexml_load_string($fileContents);
    $json = json_encode($xml);
    return $json;
}

print_r(XMLtoJSON("https://WordPressSite.com/feed")); // home page
print_r(XMLtoJSON("https://WordPressSite.com/search/QUERY_TEXT/feed")); // searching
print_r(XMLtoJSON("https://WordPressSite.com/POST_TITLE/feed")); // post article
?>