function get_ip(){
        global $REMOTE_ADDR;
        global $HTTP_X_FORWARDED_FOR, $HTTP_X_FORWARDED, $HTTP_FORWARDED_FOR, $HTTP_FORWARDED;
        global $HTTP_VIA, $HTTP_X_COMING_FROM, $HTTP_COMING_FROM;
        global $HTTP_SERVER_VARS, $HTTP_ENV_VARS;
        // Get some server/environment variables values
        if(empty($REMOTE_ADDR))
            {
            if(!empty($_SERVER)&&isset($_SERVER['REMOTE_ADDR']))
                {
                $REMOTE_ADDR = $_SERVER['REMOTE_ADDR'];
                }
            elseif(!empty($_ENV)&&isset($_ENV['REMOTE_ADDR']))
                {
                $REMOTE_ADDR = $_ENV['REMOTE_ADDR'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['REMOTE_ADDR']))
                {
                $REMOTE_ADDR = $HTTP_SERVER_VARS['REMOTE_ADDR'];
                }
            elseif(!empty($HTTP_ENV_VARS)&&isset($HTTP_ENV_VARS['REMOTE_ADDR']))
                {
                $REMOTE_ADDR = $HTTP_ENV_VARS['REMOTE_ADDR'];
                }
            elseif(@getenv('REMOTE_ADDR'))
                {
                $REMOTE_ADDR = getenv('REMOTE_ADDR');
                }
            } // end if
        if(empty($HTTP_X_FORWARDED_FOR))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_X_FORWARDED_FOR']))
                {
                $HTTP_X_FORWARDED_FOR = $_SERVER['HTTP_X_FORWARDED_FOR'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_X_FORWARDED_FOR']))
                {
                $HTTP_X_FORWARDED_FOR = $_ENV['HTTP_X_FORWARDED_FOR'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_X_FORWARDED_FOR']))
                {
                $HTTP_X_FORWARDED_FOR = $HTTP_SERVER_VARS['HTTP_X_FORWARDED_FOR'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_X_FORWARDED_FOR']))
                {
                $HTTP_X_FORWARDED_FOR = $HTTP_ENV_VARS['HTTP_X_FORWARDED_FOR'];
                }
            elseif(@getenv('HTTP_X_FORWARDED_FOR'))
                {
                $HTTP_X_FORWARDED_FOR = getenv('HTTP_X_FORWARDED_FOR');
                }
            } // end if
        if(empty($HTTP_X_FORWARDED))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_X_FORWARDED']))
                {
                $HTTP_X_FORWARDED = $_SERVER['HTTP_X_FORWARDED'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_X_FORWARDED']))
                {
                $HTTP_X_FORWARDED = $_ENV['HTTP_X_FORWARDED'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_X_FORWARDED']))
                {
                $HTTP_X_FORWARDED = $HTTP_SERVER_VARS['HTTP_X_FORWARDED'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_X_FORWARDED']))
                {
                $HTTP_X_FORWARDED = $HTTP_ENV_VARS['HTTP_X_FORWARDED'];
                }
            elseif(@getenv('HTTP_X_FORWARDED'))
                {
                $HTTP_X_FORWARDED = getenv('HTTP_X_FORWARDED');
                }
            } // end if
        if(empty($HTTP_FORWARDED_FOR))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_FORWARDED_FOR']))
                {
                $HTTP_FORWARDED_FOR = $_SERVER['HTTP_FORWARDED_FOR'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_FORWARDED_FOR']))
                {
                $HTTP_FORWARDED_FOR = $_ENV['HTTP_FORWARDED_FOR'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_FORWARDED_FOR']))
                {
                $HTTP_FORWARDED_FOR = $HTTP_SERVER_VARS['HTTP_FORWARDED_FOR'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_FORWARDED_FOR']))
                {
                $HTTP_FORWARDED_FOR = $HTTP_ENV_VARS['HTTP_FORWARDED_FOR'];
                }
            elseif(@getenv('HTTP_FORWARDED_FOR'))
                {
                $HTTP_FORWARDED_FOR = getenv('HTTP_FORWARDED_FOR');
                }
            } // end if
        if(empty($HTTP_FORWARDED))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_FORWARDED']))
                {
                $HTTP_FORWARDED = $_SERVER['HTTP_FORWARDED'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_FORWARDED']))
                {
                $HTTP_FORWARDED = $_ENV['HTTP_FORWARDED'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_FORWARDED']))
                {
                $HTTP_FORWARDED = $HTTP_SERVER_VARS['HTTP_FORWARDED'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_FORWARDED']))
                {
                $HTTP_FORWARDED = $HTTP_ENV_VARS['HTTP_FORWARDED'];
                }
            elseif(@getenv('HTTP_FORWARDED'))
                {
                $HTTP_FORWARDED = getenv('HTTP_FORWARDED');
                }
            } // end if
        if(empty($HTTP_VIA))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_VIA']))
                {
                $HTTP_VIA = $_SERVER['HTTP_VIA'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_VIA']))
                {
                $HTTP_VIA = $_ENV['HTTP_VIA'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_VIA']))
                {
                $HTTP_VIA = $HTTP_SERVER_VARS['HTTP_VIA'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_VIA']))
                {
                $HTTP_VIA = $HTTP_ENV_VARS['HTTP_VIA'];
                }
            elseif(@getenv('HTTP_VIA'))
                {
                $HTTP_VIA = getenv('HTTP_VIA');
                }
            } // end if
        if(empty($HTTP_X_COMING_FROM))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_X_COMING_FROM']))
                {
                $HTTP_X_COMING_FROM = $_SERVER['HTTP_X_COMING_FROM'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_X_COMING_FROM']))
                {
                $HTTP_X_COMING_FROM = $_ENV['HTTP_X_COMING_FROM'];
                }
            elseif(!empty($HTTP_SERVER_VARS) && isset($HTTP_SERVER_VARS['HTTP_X_COMING_FROM']))
                {
                $HTTP_X_COMING_FROM = $HTTP_SERVER_VARS['HTTP_X_COMING_FROM'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_X_COMING_FROM']))
                {
                $HTTP_X_COMING_FROM = $HTTP_ENV_VARS['HTTP_X_COMING_FROM'];
                }
            elseif(@getenv('HTTP_X_COMING_FROM'))
                {
                $HTTP_X_COMING_FROM = getenv('HTTP_X_COMING_FROM');
                }
            } // end if
        if(empty($HTTP_COMING_FROM))
            {
            if(!empty($_SERVER) && isset($_SERVER['HTTP_COMING_FROM']))
                {
                $HTTP_COMING_FROM = $_SERVER['HTTP_COMING_FROM'];
                }
            elseif(!empty($_ENV) && isset($_ENV['HTTP_COMING_FROM']))
                {
                $HTTP_COMING_FROM = $_ENV['HTTP_COMING_FROM'];
                }
            elseif(!empty($HTTP_COMING_FROM) && isset($HTTP_SERVER_VARS['HTTP_COMING_FROM']))
                {
                $HTTP_COMING_FROM = $HTTP_SERVER_VARS['HTTP_COMING_FROM'];
                }
            elseif(!empty($HTTP_ENV_VARS) && isset($HTTP_ENV_VARS['HTTP_COMING_FROM']))
                {
                $HTTP_COMING_FROM = $HTTP_ENV_VARS['HTTP_COMING_FROM'];
                }
            elseif(@getenv('HTTP_COMING_FROM'))
                {
                $HTTP_COMING_FROM = getenv('HTTP_COMING_FROM');
                }
            } // end if
        // Gets the default ip sent by the user
        if(!empty($REMOTE_ADDR))
            {
            $direct_ip = $REMOTE_ADDR;
            }
        // Gets the proxy ip sent by the user
        $proxy_ip='';
        if(!empty($HTTP_X_FORWARDED_FOR))$proxy_ip = $HTTP_X_FORWARDED_FOR;
        elseif(!empty($HTTP_X_FORWARDED))$proxy_ip = $HTTP_X_FORWARDED;
        elseif(!empty($HTTP_FORWARDED_FOR))$proxy_ip = $HTTP_FORWARDED_FOR;
        elseif(!empty($HTTP_FORWARDED))$proxy_ip = $HTTP_FORWARDED;
        elseif(!empty($HTTP_VIA))$proxy_ip = $HTTP_VIA;
        elseif(!empty($HTTP_X_COMING_FROM))$proxy_ip = $HTTP_X_COMING_FROM;
        elseif(!empty($HTTP_COMING_FROM))$proxy_ip = $HTTP_COMING_FROM;
        // Returns the true IP if it has been found, else FALSE
        if (empty($proxy_ip))
            {
            // True IP without proxy
            return $direct_ip;
            }
        else
            {
            if(!function_exists('ereg')){
                return false;
            }
            $is_ip = ereg('^([0-9]{1,3}\.){3,3}[0-9]{1,3}', $proxy_ip, $regs);
            if($is_ip && (count($regs) > 0))
                {
                // True IP behind a proxy
                return $regs[0];
                }
            else
                {
                // Can't define IP: there is a proxy but we don't have
                // information about the true IP
                return FALSE;
                }
            } // end if... else...
    }