There's no telling, but it's behind cloudflair and uses several trackers. FWIW, it's not hard to make a site look like it's running one thing over another since the client basically has to trust all the information provided.

A more sophisticated way to do this would be to use nmap and one of it's built-in scanners to assertain information the admin likely would not be able to spoof or take the trouble to spoof (e.g., operating system). That said, it is also behind cloudflair so unless you can find the true backend IP(s) and they are even open to scanning, then you're gonna have a hard time. But if you find the backend, scan it, and it comes back as Windows then chances are strong that the answer to your question is that it's running neither perl nor php.

If it's a web application, there are nuances one may look for as well. But idk I am not a pentester, but someone like that would be able to discover something that might indicate one technology over another.