高德地图计算两地现实距离

 


 

 

 

 

 

 

 

 

 

 


 geocodes[0]->location);
        $startLatLng = array(
            "lat" => $latLng[1],
            "lng" => $latLng[0]
        );
        for ($i=0; $i<$length; $i++){
            $url = urldecode("http://restapi.amap.com/v3/geocode/geo?key=您的key&address=".$param[$i]['address']);
            $result = json_decode(get($url));
            $latLng = explode(",",$result->geocodes[0]->location);
            $endLatLng = array(
                "lat" => $latLng[1],
                "lng" => $latLng[0]
            );
            $distance = array( "distance"=>getDistance($startLatLng,$endLatLng),"unit"=>"m");
            array_push($param[$i],$distance);
        }
        return $param;
    }



    $add = array(
        array("address"=>"福建省厦门市集美区"),
        array("address"=>"北京市海淀区上地十街10号")
    );
    print_r(calculateDistance("福建省厦门市集美区",$add));


    /**
     * 发送GET请求
     * @param url
     * @param param
     * @return result
     */

    function get($url, $param=array()){
        if(!is_array($param)){
            throw new Exception("参数必须为array");
        }
        $p='';
        foreach($param as $key => $value){
            $p=$p.$key.'='.$value.'&';
        }
        if(preg_match('/\?[\d\D]+/',$url)){//matched ?c
            $p='&'.$p;
        }else if(preg_match('/\?$/',$url)){//matched ?$
            $p=$p;
        }else{
            $p='?'.$p;
        }
        $p=preg_replace('/&$/','',$p);
        $url=$url.$p;
        //echo $url;
        $http =curl_init($url);
        curl_setopt($http, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt($http, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($http,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($http, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)");
        curl_setopt($http, CURLOPT_RETURNTRANSFER,1);
        curl_setopt($http, CURLOPT_HEADER,false);
        $result=curl_exec($http);
        curl_close($http);
        return $result;
    }
    /**
     * 计算两点之间距离
     * @param start
     * @param end
     * @return 米
     */
    function getDistance($startLatLng,$endLatLng){
        if (is_array($startLatLng)&&is_array($endLatLng)){

            $lat1 = (pi()/180)*$startLatLng['lat'];
            $lat2 = (pi()/180)*$endLatLng['lat'];
            $lng1 = (pi()/180)*$startLatLng['lng'];
            $lng2 = (pi()/180)*$endLatLng['lng'];

            //地球半径
            $R =  6371;

            //两点间的距离 km,如果想要米的话，结果*1000就可以了
            $d = acos(sin($lat1)*sin($lat2)+cos($lat1)*cos($lat2)*cos($lng2-$lng1))*$R;
        }else{
            $d = 1;
        }
        return $d*1000;

    }

    /**
     * 通过ip获取地址
     * @param $ip
     * @throws Exception
     * @return $result
     */
    function getAddressByIp($ip){
        if (!filter_var($ip,FILTER_VALIDATE_IP)){
            throw new Exception("IP无效");
        }
//        $url = "http://api.map.baidu.com/location/ip?ak=您的ak&coor=bd09ll&ip=".$ip;
        $url = "http://restapi.amap.com/v3/ip?key=您的key&ip=".$ip;
        $result = json_decode(get($url));
        if ($result->status != 1){
            throw new Exception("获取坐标失败");
        }
        $latLng_result = explode(";",$result->rectangle);
        $latLng_array1  = explode(",",$latLng_result[0]);
        $latLng_array2 = explode(",",$latLng_result[1]);

        $lat = ($latLng_array1[1]+$latLng_array2[1])/2;
        $lng = ($latLng_array1[0]+$latLng_array2[0])/2;

        $url = "http://restapi.amap.com/v3/geocode/regeo?key=您的key&location=" .$lng.",".$lat. "&roadlevel=0";
        $result = json_decode(get($url));
        return $result->regeocode->formatted_address;
    }


//   echo getAddressByIp("120.41.85.225");


/**
 * 通过GPS定位拿到具体位置，电脑只有IE、edge才有定位权限
 * @param $latLng=array('lat'=>?,'lng'=>?)
 * @return $result->result->formatted_address
 */

    function getAddressByGPS($latLng)
    {
//        $url = "http://api.map.baidu.com/geocoder/v2/?location=" .$latLng['lat'].",".$latLng['lng']. "&ak=您的ak&output=json";
        $url = "http://restapi.amap.com/v3/geocode/regeo?key=您的key&location=" .$latLng['lng'].",".$latLng['lat']. "&roadlevel=0";
        $result = json_decode(get($url));
        return $result->regeocode->formatted_address;
    }

    $latLng = array(
        'lat'=>24.617404,
        'lng'=>118.075912
    );
//    echo getAddressByGPS($latLng);