PHP - 获取真实的IP地址或替代的唯一标识

Question

I am trying to get the IP ADDRESS from my users, but as I search the web for ways to do this, I see that it's not possible because an IP can be faked easily.

I wan't the IP because I am creating an extraordinary application where there is no need to make a user, but you can still vote on some objects. I don't want multiple votes from each "user".

And now, how do I get the real IP Address? Is it even possible?

Or is there another way to keep the votes relatively "unique"?

Answer 1

$_SERVER['REMOTE_ADDR'] can be used. I'm not sure what you mean with "real IP address" though.