Google Reverse-Geocode - 获取邮政编码

Question

这是我目前关于如何获取不同组件的代码。

function getGeocodeFull($address)
{
    if (empty($address)) return false;

    $_geocode = false; 

    if (($_geocode = $this->getCache($address)) === false) // check if address is has a cache
    {
        if (($results = $this->geoGetCoordsFull($address)) !== false) 
        {
            // sloooooooooopppy.. yes these can all be combined, i know.
            if (!isset($results->results[0]->geometry->location->lat))  return false;
            if (!isset($results->results[0]->geometry->location->lat))  return false;
            if (!isset($results->results[0]->formatted_address))        return false;
            if (!isset($results->results[0]->address_components))       return false;

            $_geocode['lat']     = $results->results[0]->geometry->location->lat;
            $_geocode['lon']     = $results->results[0]->geometry->location->lng;
            $_geocode['address'] = $results->results[0]->formatted_address;

            foreach ($results->results[0]->address_components as $component)
            {
                if (isset($component->types))
                {
                    foreach ($component->types as $type)
                    {
                        switch ($type)
                        {
                            case 'route':
                                $_geocode['street'] = $component->long_name;
                                break;
                            case 'locality':
                                $_geocode['city'] = $component->long_name;
                                break;
                            case 'administrative_area_level_2':
                                $_geocode['county'] = $component->long_name;
                                break;
                            case 'administrative_area_level_3':
                                $_geocode['area'] = $component->long_name;
                                break;
                            case 'postal_code':
                                $_geocode['zip'] = $component->short_name;
                                break;
                        }     
                    }
                }    
            }

            $this->putCacheFull($address, $_geocode['lat'], $_geocode['lon'], $_geocode['address'], $_geocode['street'], $_geocode['city'], $_geocode['county'], $_geocode['area'], $_geocode['zip']);
        }
    }

    return $_geocode;
}

geoGetCoordsFull() 只需在 google map api 地理编码页面上使用 file_get_contents，然后解码结果然后返回。

我不太喜欢它的外观。似乎它可能非常不一致。是否有任何其他更好的解决方案可以从 google 或任何其他服务获取所有数据？

我更喜欢不限制请求的其他服务（或者使用多个地理编码服务，如 bing/yahoo/etc 是非法的）？？ （抱歉抛出另一个问题）

无论如何，非常感谢您的帮助！

Answer 1

我采用了另一种方式，为了简洁起见，我删除了一些代码，但基本上我有一张包含大约 16,000 个位置（澳大利亚的所有位置）的表格，并遍历它们以在 Google 地图上找到它们，检索经纬度信息并存储回表中，这样就不必再次查找了

$row 包含我正在查找的位置的一系列详细信息，例如地址、邮政编码、郊区和州

您还需要从 Google 地图获取此代码的 API 密钥，因为它使用 v2.1 版本。我认为您不再需要 v3 了

define("MAPS_HOST", "maps.google.com");
define("KEY", "YOU_KEY_HERE");

// Initialize delay in geocode speed
$delay = 0;
$lat = '';
$lng = '';
$base_url = "http://" . MAPS_HOST . "/maps/geo?output=xml" . "&key=" . KEY;

  $geocode_pending = true;
  while ($geocode_pending) {

    flush();

    $address = $row['suburb'] . ' ' . $row['postcode'] . ', ' . $row['state'] . ' Australia';
    $request_url = $base_url . "&q=" . urlencode($address);
    $xml = simplexml_load_file($request_url) or die("url not loading");

    $status = $xml->Response->Status->code;
    if (strcmp($status, "200") == 0) {
      // Successful geocode
      $geocode_pending = false;
      $coordinates = $xml->Response->Placemark->Point->coordinates;
      $coordinatesSplit = split(",", $coordinates);

      // Format: Longitude, Latitude, Altitude
      $lat = $coordinatesSplit[1];
      $lng = $coordinatesSplit[0];

    } else if (strcmp($status, "620") == 0) {
      // sent geocodes too fast, have a breather and try again soon
      echo("Google says no... increase the delay to ".($delay/1000000)." seconds<br />\n");
      $delay += 100000;
    } else {
      // failure to geocode
      $geocode_pending = false;
      echo "Address " . $address . " failed to be geocoded. ";
      echo "Received status " . $status . "<br />
\n";
    }
    usleep($delay);
  }
  echo("Lat long found for " . $address . "<br />\n");
  echo("Lat: " . $lat . "<br />\n");
  echo("Long: " . $lng . "<br />\n");