function GetIP() { if (!empty($_SERVER['HTTP_CLIENT_IP'])) { //如果变量是非空或非零的值,则 empty()返回 FALSE. $IP = explode(',',$_SERVER['HTTP_CLIENT_IP']); } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { $IP = explode(',',$_SERVER['HTTP_X_FORWARDED_FOR']); }