if($_SERVER['HTTP_CLIENT_IP']){
        $onlineip=$_SERVER['HTTP_CLIENT_IP']; //获取用户的IP地址,需要底部的js方法文件 }elseif($_SERVER['HTTP_X_FORWARDED_FOR']){  
    $onlineip1=$_SERVER['HTTP_X_FORWARDED_FOR'];
    }else{
        $onlineip=$_SERVER['REMOTE_ADDR'];
    } if($onlineip1 != '' && strlen($onlineip1)>15){
        $var=explode(",",$onlineip1);
        $onlineip=trim($var[1]);
    }
      
    $ipInfos = GetIpLookup($onlineip); //根据用户的IP获取地址 //结果集["country"]=> string(6) "中国" ["province"]=> string(6) "北京" ["city"]=> string(6) "北京"  //根据用户IP获取其地址等信息 function GetIp(){   
    $realip = '';  
    $unknown = 'unknown'; if (isset($_SERVER)){ if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && strcasecmp($_SERVER['HTTP_X_FORWARDED_FOR'], $unknown)){  
            $arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);  
            foreach($arr as $ip){  
                $ip = trim($ip); if ($ip != 'unknown'){  
                    $realip = $ip; break;  
                }  
            }  
        }else if(isset($_SERVER['HTTP_CLIENT_IP']) && !empty($_SERVER['HTTP_CLIENT_IP']) && strcasecmp($_SERVER['HTTP_CLIENT_IP'], $unknown)){  
            $realip = $_SERVER['HTTP_CLIENT_IP'];  
        }else if(isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['REMOTE_ADDR']) && strcasecmp($_SERVER['REMOTE_ADDR'], $unknown)){  
            $realip = $_SERVER['REMOTE_ADDR'];  
        }else{  
            $realip = $unknown;  
        }  
    }else{ if(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), $unknown)){  
            $realip = getenv("HTTP_X_FORWARDED_FOR");  
        }else if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), $unknown)){  
            $realip = getenv("HTTP_CLIENT_IP");  
        }else if(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), $unknown)){  
            $realip = getenv("REMOTE_ADDR");  
        }else{  
            $realip = $unknown;  
        }  
    }  
    $realip = preg_match("/[\d\.]{7,15}/", $realip, $matches) ? $matches[0] : $unknown; return $realip;  
} function GetIpLookup($ip = ''){ if(empty($ip)){  
        $ip = GetIp();  
    }  
    $res = @file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=' . $ip); if(empty($res)){ return false; }  
    $jsonMatches = array();  
    preg_match('#\{.+?\}#', $res, $jsonMatches); if(!isset($jsonMatches[0])){ return false; }  
    $json = json_decode($jsonMatches[0], true); if(isset($json['ret']) && $json['ret'] == 1){  
        $json['ip'] = $ip;  
        unset($json['ret']);  
    }else{ return false;  
    } return $json;  
} 
?>