根据IP显示不同网址的代码 比如我是江苏的IP,页面就会转入江苏的网址 要PHP代码

<?php

//第一步：透过代理获取用户真实的IP地址

$theip=getip();

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;
}

//第二步：通过读取IP地址库，找到所属地区
//假设表