How can Greasemonkey be utilized to overcome CORS restrictions in PHP scripts for Tampermonkey?

To overcome CORS restrictions in PHP scripts for Tampermonkey, you can utilize Greasemonkey to make cross-origin requests. This can be achieved by setting the `@grant GM_xmlhttpRequest` metadata in your Tampermonkey script to allow cross-origin requests. Then, you can use `GM_xmlhttpRequest` to make requests to the PHP script without being blocked by CORS restrictions.

<?php
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type");