function get_ip($ip) {

    $url="http://ip.taobao.com/service/getIpInfo.php?ip=".$ip;
    $ip=json_decode(file_get_contents($url));

    $data = (array)$ip->data;
    $contentStr = "{$data['region']},{$data['city']},{$data['isp']}";
    return $contentStr;


}