淘宝IP地址库：http://ip.taobao.com
获取 IP 地址，调用淘宝IP地址库 Rest API，获得地址数据。
如果传入的参数为空，则会自动获取当前的客户端IP地址。
import('Lib.Class.taobaoIp',APP_PATH); // 引入类库
$ip = "113.0.152.58";
$Location = taobaoIp::getLocation($ip); // 传入IP地址
dump($Location);die();返回数据格式：array (size=13)
'country' => string '中国' (length=6)
'country_id' => string 'CN' (length=2)
'area' => string '东北' (length=6)
'area_id' => string '200000' (length=6)
'region' => string '黑龙江省' (length=12)
'region_id' => string '230000' (length=6)
'city' => string '哈尔滨市' (length=12)
'city_id' => string '230100' (length=6)
'county' => string '' (length=0)
'county_id' => string '-1' (length=2)
'isp' => string '联通' (length=6)
'isp_id' => string '100026' (length=6)
'ip' => string '113.0.152.58' (length=12)