Below is a method I use to detect the IP Address and Host Name as well as Proxy Information of a visitors. if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"] != ""){      // for proxy      $IP = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];      $proxy = $HTTP_SERVER_VARS["REMOTE_ADDR"];      $host = @gethostbyaddr($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]); }else{      // for normal user     […]

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