Please help to check my index.php work?

I have site www.evodie-art.com, this site was made by myself with no experience in site development. To increase accessibility, I use multiple server in USA, Germany, and Singapore using index.php:

<?php
$country = geoip_country_code_by_name($_SERVER["REMOTE_ADDR"]);
if ($country == "ID") {
echo"<script language='javascript'>location.href='http://www.evodie-art.com/index.html';</script>";
} else if ($country == "US") {
echo"<script language='javascript'>location.href='http://us.evodie-art.com/index.html';</script>";
} else if ($country == "SG") {
echo"<script language='javascript'>location.href='http://sg.evodie-art.com/index.html';</script>";
} else if ($country == "DE") {
echo"<script language='javascript'>location.href='http://eu.evodie-art.com/index.html';</script>";
} else {
echo"<script language='javascript'>location.href='http://www.evodie-art.com/index.html';</script>";
}
?>

How do I know that index.php work correctly?

 

you can track your visitor by google analytic or something with geo location of the visitor.

 

To test your page, input different IP addresses from different countries instead of using $_SERVER["REMOTE_ADDR"]. This will tell you if your script changes to your desired website properly. Then test $_SERVER["REMOTE_ADDR"] itself to make sure it gets the user's IP and not your web host's (With some web hosts, you must bypass their proxy). Check $_SERVER["REMOTE_ADDR"] and make sure it atleast gets your IP correctly.

 

Use Google Analytics. it's more than enough. easy to use and track.