试试这个PHP代码。
<?PHPfunction getUserIP(){ // Get real visitor IP behind CloudFlare network if (isset($_SERVER["HTTP_CF_CONNECTING_IP"])) { $_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_CF_CONNECTING_IP"]; $_SERVER['HTTP_CLIENT_IP'] = $_SERVER["HTTP_CF_CONNECTING_IP"]; } $client = @$_SERVER['HTTP_CLIENT_IP']; $forward = @$_SERVER['HTTP_X_FORWARDED_FOR']; $remote = $_SERVER['REMOTE_ADDR']; if(filter_var($client, FILTER_VALIDATE_IP)) { $ip = $client; } elseif(filter_var($forward, FILTER_VALIDATE_IP)) { $ip = $forward; } else { $ip = $remote; } return $ip;}$user_ip = getUserIP();echo $user_ip; // Output IP address [Ex: 177.87.193.134]?>
