This is the code which powered my analysis of https://wiki.php.net/rfc/var_deprecation#low_usage. It is not elegant and was never intended to be seen by anyone, so please don't judge me too harshly on something I quickly cobbled together 🙃
Consider this licensed under the MIT License. I don't care what you do with it. Well... just don't use any of this in production without double-checking that things actually work.