Problema $_SERVER['REMOTE_ADDR']

[antoniosavolare]

Si ma non stampa proprio nulla li, vi posto tutto il codice:

<?php 
function get_ip_address(){
    foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key){
        if (array_key_exists($key, $_SERVER) === true){
            foreach (explode(',', $_SERVER[$key]) as $ip){
                $ip = trim($ip); // just to be safe


                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false){
                    return $ip;
                }
            }
        }
    }
}
echo get_ip_address();
echo '<br> con http client ip   :     ';
echo $_SERVER['HTTP_CLIENT_IP'];;
?>

l'output è visibile su http://antoniosavolare.ilbello.com/servertry.php