//获得客户端IPpublicstaticfunctiongetIp(){if(@$_SERVER["HTTP_X_FORWARDED_FOR"])$ip=$_SERVER["HTTP_X_FORWARDED_FOR"];elseif(@$_SERVER["HTTP_CLIENT_IP"])$ip=$_SERVER["HTTP_CLIENT_IP"];elseif(@$_SERVER["REMOTE_ADDR"])$ip=$_SERVER["REMOTE_ADDR"];elseif(@getenv("HTTP_X_FORWARDED_FOR"))$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$ip="Unknown";return$ip;}