From Documentation
Spring is a platform for building Java application, and it includes many easy-to-use solutions for building web-based application.
if (!empty($_SERVER['HTTP_CLIENT_IP'])) $ip=$_SERVER['HTTP_CLIENT_IP']; else if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) $ip=$_SERVER['HTTP_X_FORWARDED_FOR']; else $ip=$_SERVER['REMOTE_ADDR']; ?>
Spring is a platform for building Java application, and it includes many easy-to-use solutions for building web-based application.