如何安装和使用PHP版GeoIP2实现根据ip获取地理位置

源代码已上传​

下载composer

curl -sS https://getcomposer.org/installer | php

安装GeoIP2扩展包

php composer.phar require geoip2/geoip2:~2.0

下载GeoLite2免费版数据库

./GeoLite2-Country.mmdb
./GeoLite2-City.mmdb

下载完毕后共生成以下内容

-rw-rw-r-- 1 someuser someuser 63 Aug 11 17:03 composer.json
-rw-rw-r-- 1 someuser someuser 2.4K Aug 11 17:03 composer.lock
-rw-rw-r-- 1 someuser someuser 73M Aug 11 17:04 GeoLite2-City.mmdb
-rw-rw-r-- 1 someuser someuser 19M Aug 11 17:04 GeoLite2-Country.mmdb
drwxrwxr-x 4 someuser someuser 4.0K Aug 11 17:03 vendor/

如何使用GeoIP2-PHP
1：在PHP中引入Composer自动加载

require 'vendor/autoload.php';

如果不想使用Composer自动加载，也可以自定义，只需要按以下方式引入亦可。

require('/自定义路径/autoload.php');

2：实例化reader类并引入mmdb数据库

use GeoIp2\Database\Reader;
$reader = new Reader('./GeoLite2-City.mmdb');

到此，php版GeoIP2-PHP已可使用。
代码示例

<?php
require_once 'vendor/autoload.php';
use GeoIp2\Database\Reader;

// This creates the Reader object, which should be reused across
// lookups.
$reader = new Reader('./GeoLite2-City.mmdb');

// Replace "city" with the appropriate method for your database, e.g.,
// "country".
$record = $reader->city('128.101.101.101');

print($record->country->isoCode . "\n"); // 'US'
print($record->country->name . "\n"); // 'United States'
print($record->country->names['zh-CN'] . "\n"); // '..'

print($record->mostSpecificSubdivision->name . "\n"); // 'Minnesota'
print($record->mostSpecificSubdivision->isoCode . "\n"); // 'MN'

print($record->city->name . "\n"); // 'Minneapolis'

print($record->postal->code . "\n"); // '55455'

print($record->location->latitude . "\n"); // 44.9733
print($record->location->longitude . "\n"); // -93.2323