谷歌地图 - 将地址转换为纬度和经度 - PHP后端？

Question

是否可以转换(在PHP后端):

<?php
  $Address = "Street 1, City, Country"; // just normal address
?>

至

<?php
  $LatLng = "10.0,20.0"; // latitude & lonitude
?>

我目前使用的代码是默认代码:

<script type='text/javascript' src='https://maps.googleapis.com/maps/api/js?v=3.exp&#038;sensor=false'></script>

<script>

function initialize() {
  var myLatlng = new google.maps.LatLng(10.0,20.0);
  var mapOptions = {
    zoom: 16,
    center: myLatlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  var map = new google.maps.Map(document.getElementById('map'), mapOptions);

  var marker = new google.maps.Marker({
      position: myLatlng,
      map: map,
      title: 'This is a caption'
  });
}

google.maps.event.addDomListener(window, 'load', initialize); 

</script>

<div id="map"></div>

我已经阅读了https://developers.google.com/maps/documentation/geocoding一段时间了,但我觉得我没经验.

谢谢.

Answer 1

这对我有用:

<?php
  $Address = urlencode($Address);
  $request_url = "http://maps.googleapis.com/maps/api/geocode/xml?address=".$Address."&sensor=true";
  $xml = simplexml_load_file($request_url) or die("url not loading");
  $status = $xml->status;
  if ($status=="OK") {
      $Lat = $xml->result->geometry->location->lat;
      $Lon = $xml->result->geometry->location->lng;
      $LatLng = "$Lat,$Lon";
  }
?>

参考文献:

• http://www.fcsoftware.co.uk/blog/?p=66
• https://developers.google.com/maps/documentation/geocoding

Answer 2

<?php

/* 
* Given an address, return the longitude and latitude using The Google Geocoding API V3
*
*/

function Get_LatLng_From_Google_Maps($address) {
    $address = urlencode($address);

    $url = "http://maps.googleapis.com/maps/api/geocode/json?address=$address&sensor=false";

    // Make the HTTP request
    $data = @file_get_contents($url);
    // Parse the json response
    $jsondata = json_decode($data,true);

    // If the json data is invalid, return empty array
    if (!check_status($jsondata))   return array();

    $LatLng = array(
        'lat' => $jsondata["results"][0]["geometry"]["location"]["lat"],
        'lng' => $jsondata["results"][0]["geometry"]["location"]["lng"],
    );

    return $LatLng;
}

/* 
* Check if the json data from Google Geo is valid 
*/

function check_status($jsondata) {
    if ($jsondata["status"] == "OK") return true;
    return false;
}

/*
*  Print an array
*/

function d($a) {
    echo "<pre>";
    print_r($a);
    echo "</pre>";
}

有关如何使用上述功能的示例代码,请随时访问我的博客

Answer 3

是的你可以.你会做的请求与file_get_contents或curl到以下网址:

http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA&sensor=false

返回的是json编码的响应.您可以使用将其解析为数组json_decode.

文档页面有一个响应可能的样子,用它来查找所需的数据.