功能:当App获取到用户的地理坐标时,能够依据坐标知道用户当前在那个国家、省份、城市。及周边有什么数据。
原理:基于百度Geocoding API 实现。须要先注冊百度开发人员。然后申请百度AK(密钥)
Geocoding.class.php
class Geocoding {
const API = 'http://api.map.baidu.com/geocoder/v2/';
const NO_POIS = 0;
const POIS = 1;
public static function getAddressComponent($ak, $longitude, $latitude, $pois=self::NO_POIS){
$param = array(
'ak' => $ak,
'location' => implode(',', array($latitude, $longitude)),
'pois' => $pois,
'output' => 'json'
);
$response = self::toCurl(self::API, $param);
$result = array();
if($response){
$result = json_decode($response, true);
}
return $result;
}
private static function toCurl($url, $param=array()){
$ch = curl_init();
if(substr($url,0,5)=='https'){
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, true);
}
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($param));
$response = curl_exec($ch);
if($error=curl_error($ch)){
return false;
}
curl_close($ch);
return $response;
}
}
?
>
demo.php
<?php
require "Geocoding.class.php";
$ak = '这里填写你的百度AK';
$longitude = 113.327782;
$latitude = 23.137202;
$result = Geocoding::getAddressComponent($ak, $longitude, $latitude, Geocoding::NO_POIS);
echo '<pre>';
print_r($result);
echo '</pre>';
?
>
样例返回:
Array
(
[status] => 0
[result] => Array
(
[location] => Array
(
[lng] => 113.32778195925
[lat] => 23.137201991056
)
[formatted_address] => 广东省广州市天河区体育西横街35号
[business] => 天河城,体育中心,沙河
[addressComponent] => Array
(
[city] => 广州市
[country] => 中国
[direction] => 附近
[distance] => 14
[district] => 天河区
[province] => 广东省
[street] => 体育西横街
[street_number] => 35号
[country_code] => 0
)
[poiRegions] => Array
(
)
[sematic_description] => 红盾大厦北58米
[cityCode] => 257
)
)
源代码下载地址:点击查看
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