Sir, this is not helping us.

Let's assume my wif key is 5ssdrhytfddzagbjbvhDghbRfg and my Bitcoin address is 3sdhjufcb

How you are converting it from wif key to address. We don't want to generate any new private key. We just want to convert same private key inside wallet to address without using core.

E.g. $PrivateKey = hash ("sha256", $publickey, flase);

Please make this simple. I am hardware supplier and they are just under 18 students. Very difficult for us to understand and do it.