https://api.liesys.com/ipv4-ipv6.php 源代码： <?php $user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"]; $user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"]; if(!filter_var($user_IP, FILTER_VALIDATE_IP, FILTER_FLA...