PHP implementation code to obtain the user's real IP and geographical location (Taobao IP interface)

PHP obtains the user's real IP address and analyzes its actual geographical location based on the Taobao IP interface. Friends in need can refer to it.

The Taobao IP library is used in this article: http://ip.taobao.com.

The code is as follows.

<?php
/**
 * 获取用户真实 IP
 * 程序员之家 bbs.it-home.org
 */
function getIP()
{
    static $realip;
    if (isset($_SERVER)){
        if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
            $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
        } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
            $realip = $_SERVER["HTTP_CLIENT_IP"];
        } else {
            $realip = $_SERVER["REMOTE_ADDR"];
        }
    } else {
        if (getenv(“HTTP_X_FORWARDED_FOR”)){
            $realip = getenv(“HTTP_X_FORWARDED_FOR”);
        } else if (getenv(“HTTP_CLIENT_IP”)) {
            $realip = getenv(“HTTP_CLIENT_IP”);
        } else {
            $realip = getenv(“REMOTE_ADDR”);
        }
    }
    return $realip;
}
/**
 * 获取 IP  地理位置
 * 淘宝IP接口
 * @Return: array
 */
function getCity($ip)
{
$url=”http://ip.taobao.com/service/getIpInfo.php?ip=”.$ip;
$ip=json_decode(file_get_contents($url));
if((string)$ip->code==’1′){
  return false;
  }
  $data = (array)$ip->data;
return $data;
}
?>

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