Personal library and Undefined property $input

[eluser]luca89pe[/eluser]
Thank you to DarkManX too!
I wrote this:

Code:

function __construct() {
        $this->CI = & get_instance();
    }

and if i write this:

Code:

if (!isset($_SERVER['PHP_AUTH_USER'])) {
            header("WWW-Authenticate: Basic realm=\"Effettua il Login!\"");
            Header("HTTP/1.0 401 Unauthorized");
            exit;
        }
#Verifichiamo se il Login è corretto...
        else if (($this->CI->input->server('PHP_AUTH_USER') == $user) && (hash("sha256", $this->CI->input->server('PHP_AUTH_PW')) == $pass))
            return 1;
#Se il Login non è corretto...
        else
            return 0;
    }

but if i try changing this:

Code:

if (!isset($_SERVER['PHP_AUTH_USER'])) {

with this:

Code:

if (!isset($this->CI->input->server['PHP_AUTH_USER'])) {

it shows the authentication dialog in loop!