How can I calculate the public address if I only have the private key with PHP only?
For example I have
5K2YUVmWfxbmvsNxCsfvArXdGXm7d5DC9pn4yD75k2UaSYgkXTh
and want
1HKqKTMpBTZZ8H5zcqYEWYBaaWELrDEXeE
Does anyone have a working PHP code without using bitcoind or any other API/tools?
just import the private key into your wallet , and you've got the public key.