//通过接口获取所在地址IP

        public function is_where(){

            header("content-type:text/html;charset=utf8");

            $content = file_get_contents("http://api.map.baidu.com/location/ip?ak=7IZ6fgGEGohCrRKUE9Rj4TSQ&ip={$getIp}&coor=bd09ll");

            //echo $getIp;die;

            $json = json_decode($content);

            $arr = array($json->{'content'}->{'point'}->{'x'},$json->{'content'}->{'point'}->{'y'}, $json->{'content'}->{'address'});//按层级关系提取经度数据

            return json_encode($arr);

        }