Use PHP to obtain countries, provinces, cities, and surrounding data based on geographical coordinates

<?php/**

 * 根据地理坐标获取国家、省份、城市，及周边数据类(利用百度Geocoding API实现)

 * 百度密钥获取方法：http://lbsyun.baidu.com/apiconsole/key?application=key（需要先注册百度开发者账号）

 * Date:    2015-07-30

 * Author:  fdipzone

 * Ver: 1.0

 *

 * Func:

 * Public  getAddressComponent 根据地址获取国家、省份、城市及周边数据

 * Private toCurl              使用curl调用百度Geocoding API

 */class Geocoding {

    // 百度Geocoding API

    const API = 'http://api.map.baidu.com/geocoder/v2/';    // 不显示周边数据

    const NO_POIS = 0;    // 显示周边数据

    const POIS = 1;

    /**

     * 根据地址获取国家、省份、城市及周边数据

     * @param  String  $ak        百度ak(密钥)

     * @param  Decimal $longitude 经度

     * @param  Decimal $latitude  纬度

     * @param  Int     $pois      是否显示周边数据

     * @return Array

     */

    public static function getAddressComponent($ak, $longitude, $latitude, $pois=self::NO_POIS){

        $param = array(                'ak' => $ak,                'location' => implode(',', array($latitude, $longitude)),                'pois' => $pois,                'output' => 'json'

        );        // 请求百度api

        $response = self::toCurl(self::API, $param);        $result = array();        if($response){            $result = json_decode($response, true);

        }        return $result;

    }    /**

     * 使用curl调用百度Geocoding API

     * @param  String $url    请求的地址

     * @param  Array  $param  请求的参数

     * @return JSON

     */

    private static function toCurl($url, $param=array()){

        $ch = curl_init();        if(substr($url,0,5)=='https'){

            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 跳过证书检查

            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, true);  // 从证书中检查SSL加密算法是否存在

        }

        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;

    }

}?>

<?phprequire "Geocoding.class.php";$ak = &#39;这里填写你的百度AK&#39;;$longitude = 113.327782;$latitude = 23.137202;$result = Geocoding::getAddressComponent($ak, $longitude, $latitude, Geocoding::NO_POIS);echo &#39;<pre class="brush:php;toolbar:false">&#39;;

print_r($result);echo '

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

        )

)