This may help you to get country then you can redirect accordingly.
<?PHP
function visitor_country()
{
$client = @$_SERVER['HTTP_CLIENT_IP'];
$forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
$remote = $_SERVER['REMOTE_ADDR'];
$result = "Unknown";
if(filter_var($client, FILTER_VALIDATE_IP))
{
$ip = $client;
}
elseif(filter_var($forward, FILTER_VALIDATE_IP))
{
$ip = $forward;
}
else
{
$ip = $remote;
}
$ip_data = @json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=".$ip));
if($ip_data && $ip_data->geoplugin_countryName != null)
{
$result = $ip_data->geoplugin_countryName;
}
return $result;
}
echo visitor_country(); // Output Coutry name [Ex: United States]
?>
OR in Javascript.
<html>
<head>
<script language="JavaScript" src="http://www.geoplugin.net/javascript.gp" type="text/javascript"></script>
</head>
<body>
<script language="Javascript">
document.write("Welcome to our visitors from "+geoplugin_city()+", "+geoplugin_countryName());
// window.location = "http://www.yoururl.com"; /* you can forward user to url using this line of code according to your conditions
</script>
</body>
</html>