Benutzer-IP-Adresse abrufen - CSS-Tricks

Konten für Proxies:

if (!empty($_SERVER('HTTP_CLIENT_IP'))) ( $ip=$_SERVER('HTTP_CLIENT_IP'); ) elseif (!empty($_SERVER('HTTP_X_FORWARDED_FOR'))) ( $ip=$_SERVER('HTTP_X_FORWARDED_FOR'); ) else ( $ip=$_SERVER('REMOTE_ADDR'); )