淘宝公司提供了一个很好用的IP地理信息查询接口。在这里:http://ip.taobao.com/

以下这个taobaoIPQuery类将极大的简化相关的信息查询。

复制代码 代码如下:

<?php

class taobaoIPQuery {

private $m_ip;

private $m_content;

public function __construct($ip) {

if (isset($ip)) {

$this->m_ip = $ip;

} else {

$this->m_ip = "";

}

if (!empty($this->m_ip)) {

$url_handle = curl_init();

curl_setopt($url_handle, CURLOPT_URL, "http://ip.taobao.com/service/getIpInfo.php?ip=" . $this->m_ip);

curl_setopt($url_handle, CURLOPT_RETURNTRANSFER, true);

$this->m_content = curl_exec($url_handle);

curl_close($url_handle);

if ($this->m_content) {

$this->m_content = json_decode($this->m_content);

if ($this->m_content->{'code'} == 1) {

exit("query error!");

}

} else {

exit("curl error!");

}

} else {

exit("ip address must be not empty!");

}

}

public function get_region() {

return $this->m_content->{'data'}->{'region'};

}

public function get_isp() {

return $this->m_content->{'data'}->{'isp'};

}

public function get_country() {

return $this->m_content->{'data'}->{'country'};

}

public function get_city() {

return $this->m_content->{'data'}->{'city'};

}

}

调用很简单

复制代码 代码如下:

$ip = $_SERVER["REMOTE_ADDR"];

$ipquery = new taobaoIPQuery($ip);

$region = $ipquery->get_region();

$country = $ipquery->get_country();

$city = $ipquery->get_city();