You can easily bundle all resources in that PHP as someone said. Or the script can download them from CDN and cache locally and then use the local version. I al

You can easily bundle all resources in that PHP as someone said. Or the script can download them from CDN and cache locally and then use the local version. I also don't like external resources, it makes no sense. It is often not even faster as most people think. It is fast only if that file is already cached in the browser and given the number of various js/css projects and their versions it is generally unlikely to have the proper version cached.