PHP中根据IP地址判断所在城市等信息

获得IP地址

在 PHP 中得到当前访问者的IP地址，还是比较简单的:

$ip = $_SERVER['REMOTE_ADDR']

上面IP有时获取不到真实IP地址我们可以如下操作

$ip = GetIP();

将IP转换为城市等信息

淘宝提供了一个IP数据接口: http://ip.ta*o**bao.com/service/getIpInfo.php?ip=ip地址

$response = file_get_contents('http://ip.tao**ba*o.com/service/getIpInfo.php?ip='.$ip);
$result = json_decode($response);
print_r($result);

输出结果为:

stdClass Object
(
[code] => 0
[data] => stdClass Object
(
[country] => 中国
[country_id] => CN
[area] => 华南
[area_id] => 800000
[region] => 广东省
[region_id] => 440000
[city] => 深圳市
[city_id] => 440300
[county] =>
[county_id] => -1
[isp] => 电信
[isp_id] => 100017
[ip] => 183.16.191.102
)
)

function GetIP() {
if ($_SERVER["HTTP_X_FORWARDED_FOR"])
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
else if ($_SERVER["HTTP_CLIENT_IP"])
$ip = $_SERVER["HTTP_CLIENT_IP"];
else if ($_SERVER["REMOTE_ADDR"])
$ip = $_SERVER["REMOTE_ADDR"];
else if (getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("HTTP_CLIENT_IP"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("REMOTE_ADDR"))
$ip = getenv("REMOTE_ADDR");
else
$ip = "Unknown";
return $ip;
}
echo GetIP();