How can I get user's country flag on my site

Question

I wanna display user\'s/visitor\'s country flag on my site.

I am using different technologies like php,jsp and simple html. So I want a code which by placing on my site,

Answer 1

1. Get the IP of visitor.

    if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
       $ip = $_SERVER['HTTP_CLIENT_IP'];
   } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
       $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
   } else {
       $ip = $_SERVER['REMOTE_ADDR'];
   }
   

2. Use ip2location to find the country of the user.

   http://dev.maxmind.com/geoip/legacy/geolite/

3. Compare the resulting country to a list of images and display the matching image. I suggest using a database to store the country name and the path to the associated image.