/**
     * 查詢當前定位位置5公里範圍內的商家資訊
     */
    public function findShop()
    {
            
        $point = $this -> returnSquarePoint($param['lng'], $param['lat'], 4);//計算經緯度的周圍某段距離的正方形的四個點
        #查詢條件組合
        $where = $this->queryParam($point);
        $query_params = [];
        $query_params
 
['_complex'] = $where;
        $query_params['closed'] = 0;//開啟的店鋪
        
        $shop_list = D('Shop')
        -> field('shop_id,shop_name,addr,photo,lat,lng,tel,user_id,sign')
        -> where($query_params)
        -> select();
        #高德地圖
        $map = new Map();
        $amap_config
 
 = C('sdk.amap');
        if(!$shop_list && $param['keyword']){
            Log::write("未找到資訊，進入地區搜素");
            
            #獲取當前定位的城市
            $address = $map->findAddressByPoint($param['lng'].','.$param['lat'], $amap_config['key']);
            $address = json_decode($address,true
 
);
            $city = '';
            if($address['status'] == 1){
                $city = $address['regeocode']['addressComponent']['city'];
            }
            Log::write("獲得城市:".$city);
            #獲取地區的經緯度資訊
            $ret = $map->findAddressByStr($param['keyword'], $amap_config['key'],$city);
            $ret = json_decode($ret,true);
            $geocodes = $ret['geocodes'];
            if(count($geocodes) < 1){
                #未找到當前所在城市的地區資訊 -查全國
                Log::write("搜尋全國****");
                $ret = $map->findAddressByStr($param['keyword'], $amap_config['key'],'');
                $ret = json_decode($ret,true);
                $geocodes = $ret['geocodes'];
                if(count($geocodes) < 1){
                    $this -> response([]);
                }
            }
            $location = $geocodes[0]['location'];
            if(!empty($location)){
                Log::write("獲得獲得搜尋的地區經緯度資訊:".$location);
                $ret_arr = explode(',', $location);
                $point1 = returnSquarePoint($ret_arr[0], $ret_arr[1], 4);//計算經緯度的周圍某段距離的正方形的四個點 4
                
                #查詢條件組合
                $where = [];
                $where = $this->queryParam($point1);
                $query_params = [];
                $query_params['_complex'] = $where;
                $query_params['closed'] = 0;//開啟的店鋪
                $shop_list = D('Shop')
                -> field('shop_id,shop_name,addr,photo,lat,lng,tel,user_id,sign')
                -> where($query_params)
                -> select();
                Log::write('最後的查詢：'.D('Shop')->getLastSql());
            }
        }
        if(count($shop_list) > 0){
            #計算距離 #主播狀態
            $origin = $param['lng'].','.$param['lat'];
            foreach ($shop_list as $k => $v){
                $shop_list[$k]['distance'] = getDistance($param['lat'],$param['lng'],$v['lat'],$v['lng']);
            }
        }
       
        $this -> response($shop_list);
    }
/**
     * 拼接查詢條件
     * @param $point array 地圖座標範圍陣列
     */
    public function queryParam($point){
        
        $right_bottom_lat = $point['right_bottom']['lat'];   //右下緯度
        $right_bottom_lng = $point['right_bottom']['lng'];   //右下經度
        
        $right_top_lat = $point['right_top']['lat'];   //右上緯度
        $right_top_lng = $point['right_top']['lng'];   //右上經度
        
        $left_top_lat = $point['left_top']['lat'];     //左上緯度
        $left_top_lng = $point['left_top']['lng'];     //左上經度
        
        $left_bottom_lat = $point['left_bottom']['lat']; //左下緯度
        $left_bottom_lng = $point['left_bottom']['lng']; //左下經度
        
        #右下 大於經度小於緯度
        $param[1]['lat'] = array('egt',$right_bottom_lat);
        $param[1]['lng'] = array('elt',$right_bottom_lng);
        #左上 大於緯度小於經度
        $param[2]['lat'] = array('elt',$left_top_lat);
        $param[2]['lng'] = array('egt',$left_top_lng);
        #右上 小於經度小於緯度
        $param[3]['lat'] = array('elt',$right_top_lat);
        $param[3]['lng'] = array('elt',$right_top_lng);
        #左下 大於經度大於緯度
        $param[4]['lat'] = array('egt',$left_bottom_lat);
        $param[4]['lng'] = array('egt',$left_bottom_lng);
       
        return $param;
    }
    /**
 *@param lng float 經度
 *@param lat float 緯度
 *@param distance float 該點所在圓的半徑，該圓與此正方形內切，預設值為0.5千米
 *@return array 正方形的四個點的經緯度座標
 */
function returnSquarePoint($lng, $lat,$distance = 10)
{
    $earthdata=6371;//地球半徑，平均半徑為6371km
    $dlng =  2 * asin(sin($distance / (2 * $earthdata)) / cos(deg2rad($lat)));
    $dlng = rad2deg($dlng);
    $dlat = $distance/$earthdata;
    $dlat = rad2deg($dlat);
    $arr=array(
        'left_top'=>array('lat'=>$lat + $dlat,'lng'=>$lng-$dlng),
        'right_top'=>array('lat'=>$lat + $dlat, 'lng'=>$lng + $dlng),
        'left_bottom'=>array('lat'=>$lat - $dlat, 'lng'=>$lng - $dlng),
        'right_bottom'=>array('lat'=>$lat - $dlat, 'lng'=>$lng + $dlng)
    );
    return $arr;
}