地址从经纬度转化为地址

Question

谁能帮我从纬度和经度中获取地址文本，都是从数据库上传的？我还需要将地址及其各自的坐标重新插入到数据库中。

<?php    
// Opens a connection to a MySQL server

$con = new mysqli($servername, $username, $password, $database);


$result = mysqli_query($con,'SELECT * FROM table_name ORDER BY id DESC');


while ($row = @mysqli_fetch_assoc($result)){

  $latitude=  $row['latitude']. '  ';
  $longitude=  $row['longitude']. '  ';

}

?>

有没有办法获取地址并在此期间插入它，以便它获取地址并立即将其发送回去？任何帮助，谢谢！

Answer 1

您可以使用 google 映射 api，之前它们允许匿名访问其 API，但现在您必须获得一个 API 密钥。 https://developers.google.com/maps/documentation/geocoding/intro#Limits

<?php    
// Opens a connection to a MySQL server

$con = new mysqli($servername, $username, $password, $database);


$result = mysqli_query($con,'SELECT * FROM table_name ORDER BY id DESC');


while ($row = @mysqli_fetch_assoc($result)){

  $latitude=  $row['latitude']. '  ';
  $longitude=  $row['longitude']. '  ';

  $geolocation = $latitude.','.$longitude;

  // be sure to replace API key
  $request = 'http://maps.googleapis.com/maps/api/geocode/json?latlng='.$geolocation.'&sensor=false'.'key=YOUR_API_KEY'; 

  // retrieve data from url, GET REQUEST
  $file_contents = file_get_contents($request);

  // decode json object
  $json_decode = json_decode($file_contents);

  // return the json object of the first record, navigate to the address from here
  var_dump($json_decode);
}

?>

Answer 2

您想要做的是所谓的反向地理编码，将地图上的位置转换为人类可读的地址。

如果您在 JavaScript 中执行此操作，您将需要纬度和经度（您提到您已经拥有）和 API key。有了这些，您基本上可以使用下面的 URL 和所需的纬度、经度和 API 键来执行 GET 请求。

const lat = 'LAT_COORDS_STRING';
const lng = 'LNG_COORDS_STRING';
const apiKey = 'MY_API_KEY_STRING'

const url = `https://maps.googleapis.com/maps/api/geocode/json?latlng=${lat},${lng}&key=${apiKey}`;

上面的查询会return一个JSON（见下文），你可以解析和提取你需要的信息（也许字段formatted_address就是你需要的）。

{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "277",
               "short_name" : "277",
               "types" : [ "street_number" ]
            },
            {
               "long_name" : "Bedford Avenue",
               "short_name" : "Bedford Ave",
               "types" : [ "route" ]
            },
            {
               "long_name" : "Williamsburg",
               "short_name" : "Williamsburg",
               "types" : [ "neighborhood", "political" ]
            },
            {
               "long_name" : "Brooklyn",
               "short_name" : "Brooklyn",
               "types" : [ "sublocality", "political" ]
            },
            {
               "long_name" : "Kings",
               "short_name" : "Kings",
               "types" : [ "administrative_area_level_2", "political" ]
            },
            {
               "long_name" : "New York",
               "short_name" : "NY",
               "types" : [ "administrative_area_level_1", "political" ]
            },
            {
               "long_name" : "United States",
               "short_name" : "US",
               "types" : [ "country", "political" ]
            },
            {
               "long_name" : "11211",
               "short_name" : "11211",
               "types" : [ "postal_code" ]
            }
         ],
         "formatted_address" : "277 Bedford Avenue, Brooklyn, NY 11211, USA",
         "geometry" : {
            "location" : {
               "lat" : 40.714232,
               "lng" : -73.9612889
            },
            "location_type" : "ROOFTOP",
            "viewport" : {
               "northeast" : {
                  "lat" : 40.7155809802915,
                  "lng" : -73.9599399197085
               },
               "southwest" : {
                  "lat" : 40.7128830197085,
                  "lng" : -73.96263788029151
               }
            }
         },
         "place_id" : "ChIJd8BlQ2BZwokRAFUEcm_qrcA",
         "types" : [ "street_address" ]
      },

  ... Additional results[] ...

有关详细信息，请查看此 link。

地址从经纬度转化为地址

address from latitude and longitud into address

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javascript

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mysql

gps