Add PHP file to each server without creating cpanel account

I would like to add a PHP file to each server, that I can monitor from another location.

This files will test a few simple things, and give the results in text, that will be monitored from elsewhere.

I would like to place it somewhere where I can access it just with the servername, and file name, something like
http://host.domain.com/obscure_name.php

I've tried placing it in the cgi-sys folder, but it looks like that folder cannot parse PHP, or I was just unable
to connect using: http://host.domain.com/cgi-sys/obscure_name.php

Thank you!