Python/PHP：免费IP归属地查询接口和通过ip获取大致位置信息

1、淘宝API接口：

文档：​​http://ip.taobao.com/instructions​​

示例：

GET http://ip.taobao.com/outGetIpInfo?ip=221.218.209.125&accessKey=alibaba-inc

{
    data: {
        area: "",
        country: "中国",
        isp_id: "100026",
        queryIp: "221.218.209.125",
        city: "北京",
        ip: "221.218.209.125",
        isp: "联通",
        county: "",
        region_id: "110000",
        area_id: "",
        county_id: null,
        region: "北京",
        country_id: "CN",
        city_id: "110100"
    },
    msg: "query success",
    code: 0
}

2、IP-API接口：

文档：​​https://ip-api.com/docs/api:json​​

示例：

GET http://ip-api.com/json/221.218.209.125?lang=zh-CN

{
    status: "success",
    country: "中国",
    countryCode: "CN",
    region: "BJ",
    regionName: "北京市",
    city: "北京",
    zip: "",
    lat: 39.9285,
    lon: 116.385,
    timezone: "Asia/Shanghai",
    isp: "China Unicom Beijing Province Network",
    org: "",
    as: "AS4808 China Unicom Beijing Province Network",
    query: "221.218.209.125"
}

3、太平洋IP接口：

文档：​​http://whois.pconline.com.cn/​​

示例：

GET http://whois.pconline.com.cn/ipJson.jsp?ip=221.218.209.125&json=true

{
    ip: "221.218.209.125",
    pro: "北京市",
    proCode: "110000",
    city: "北京市",
    cityCode: "110000",
    region: "海淀区",
    regionCode: "110108",
    addr: "北京市海淀区 联通ADSL",
    regionNames: "",
    err: ""
}

参考
​​免费IP归属地查询接口汇总​​

代码实现

网络请求库，使用 Requests（​​PHP：rmccue/requests进行网络请求​​）

通过ip获取位置信息不太准确，需要对获取的省市县三级区域码做判断处理

<?php

namespace app\service;

use app\common\AppException;
use Requests;


class IpService
{

    public static function getIpInfo($ip)
    {

        $base_url = 'http://whois.pconline.com.cn/ipJson.jsp';

        $params = [
            'ip'   => $ip,
            // 注意，此处不能写boolean值，需要给string
            'json' => 'true'
        ];

        $url = $base_url . '?' . http_build_query($params);

        $response = Requests::get($url);

        if ($response->success) {

            // 编码转换处理，并移除字符串两边的空白
            $body=iconv("GBK", "UTF-8", trim($response->body)）;
            $data = json_decode($body, true);

            // 优先取区县码
            $code = $data['regionCode'];

            // 其次取城市码
            if (!self::isRegionCode($code)) {
                $code = $data['cityCode'];
            }

            //再次取省份码
            if (!self::isRegionCode($code)) {
                $code = $data['proCode'];
            }

            return [
                'ip'   => $data['ip'],
                'code' => $code
            ];

            // 此处仅返回区位码即可
            return [
                'ip'   => $data['ip'],
                'code' => $data['regionCode'],
            ];

        } else {
            throw new AppException('ip信息获取失败');
        }
    }

    public static function isRegionCode($code)
    {
        if (empty($code) || count($code) != 6) {
            return false;
        } else {
            return true;
        }
    }
}

异常类

<?php


namespace app\common;


use Exception;

/**
 * 自定义的业务异常
 * Class AppException
 * @package app\common
 */
class AppException extends Exception
{

}