Find current client IP

gistfile1.php

<?php
/**
 *  Trova l'ip del cliente
 */

function mc_get_user_ip() {
        // Tiro giù l'ip del client
	if ( isset( $_SERVER["REMOTE_ADDR"] ) ) { 
	   $ip = $_SERVER["REMOTE_ADDR"]; 
	} elseif ( isset( $_SERVER["HTTP_X_FORWARDED_FOR"] ) ) { 
	    $ip = $_SERVER["HTTP_X_FORWARDED_FOR"]; 
	} elseif ( isset( $_SERVER["HTTP_CLIENT_IP"] ) ) { 
	    $ip = $_SERVER["HTTP_CLIENT_IP"]; 
	} else {
		$ip = '1.1.1.1';
	}
	
	return $ip;
}