dedecms首页添加根据IP访问区域跳转对应页面的方法

$ip = getIp();//dede自带的查询IP功能，直接调用
$res1 = file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=$ip");
$res1 = json_decode($res1);
$useraddre = $res1->data->region;
$useraddre = mb_convert_encoding($useraddre, "GBK", "UTF-8");
$dzcity = "上海";
$contra= strstr($useraddre,$dzcity);
if(!emptyempty($contra)){
//上海的，跳转到这里
header("Pragma: no-cache");
header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
header('HTTP/1.1 301 Moved Permanently');
header("Location: http://www.45it.net/");
exit;
}