PHP获取客户端的IP地址

直接给大家上代码吧。

if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"]) {     $ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];} elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"]) {     $ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];} elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"]) {     $ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];} elseif (getenv("HTTP_X_FORWARDED_FOR")) {     $ip = getenv("HTTP_X_FORWARDED_FOR");} elseif (getenv("HTTP_CLIENT_IP")) {     $ip = getenv("HTTP_CLIENT_IP");} elseif (getenv("REMOTE_ADDR")) {     $ip = getenv("REMOTE_ADDR");} else {     $ip = "Unknown";}echo "IP: ".$ip;