List of PHP configuration settings for Grav?

Is there a list somewhere about which php.ini settings work, or – more importantly – don't work with Grav? I'm thinking about disable_functions and various performance/security tweaks. I suspect that Grav uses quite a few calls to external features like curl to get things done.

See Requirements

Sorry for the late reply, I assumed I would get a notification Email upon reply. Unfortunately the documentation doesn't go into any detail about PHP (aside from necessary/beneficial modules), which is why I asked.