GEOIP-APIs

一个IP查询的API网站

PHP使用例子：

There are three methods of querying the GeoIP databases from PHP. The easiest to setup is the Pure PHP API. The setup for the high performance PHP extension and mod_geoip APIs is more advanced.

Pure PHP module
pure PHP module. Free and databases are available.

A port to PHP5 of the PHP API is available from .

The Pure PHP API is cross-platform, works on Windows as well as Linux, and does not require Apache, nor does it require the C API.

PHP Extension on PECL
a PHP extension that allows you to embed the inside PHP for improved performance.

Using mod_geoip with PHP
For improved performance, you can access the mod_geoip from PHP. There is a trade-off between performance and ease of installation - the Apache module is faster (), but the pure PHP module is much easier to install.

The following must be installed to use mod_geoip from PHP.

• web server

Usage
Once is installed, it is easy to use from PHP. Use something like the following:

<%
$country_code = apache_note("GEOIP_COUNTRY_CODE");
$country_name = apache_note("GEOIP_COUNTRY_NAME");
%>