通过ip地址获取ip地址的区域信息

function  getcposition( $ip ){

    try  {
        $res1  =  file_get_contents ( "http://ip.taobao.com/service/getIpInfo.php?ip=$ip" );
        $res1  = json_decode( $res1 ,true);

        if  ( $res1 [  "code" ]==0){
            return  $res1 [ 'data' ][ "country" ]. $res1 [ 'data' ][  "region" ]. $res1 [ 'data' ][ "city" ]. "_" . $res1 [ 'data' ][  "isp" ];
        } else {
            return  "未能获取" ;
        }
    } catch  (Exception  $e ){
        return  "未能获取" ;
    }
}