stdClass object 数据获取方法

$data  = stdClass Object ( [code] => 0 [data] => stdClass Object ( [country] => 未分配或者内网IP [country_id] => IANA [area] => [area_id] => -1 [region] => [region_id] => -1 [city] => 内网IP [city_id] => local [county] => 内网IP [county_id] => local [isp] => 内网IP [isp_id] => local [ip] => 0.0.0.0 ) )

取出数组值：

$data['country'] = $jsonDecode->data->country;
    $data['province'] = $jsonDecode->data->region;
    $data['city'] = $jsonDecode->data->city;
    $data['isp'] = $jsonDecode->data->isp;