No I am not talking about any other plug-in. You clearly haven’t used ACF before.
No, it’s the ACF tool which generates PHP or JSON code for the fields.
I mean instead of having to copy & paste the code generated every time, I’d like that when I hit generate it saves that code to a file.
Export PHP doesn’t work. I copied the code into functions.php and nothing happens. I tried deactivating and activating, and no new fields were generated.