phpCAS::setNoCasServerValidation PHP Method

    public static function setNoCasServerValidation()
    {
        phpCAS::traceBegin();
        phpCAS::_validateClientExists();
        phpCAS::trace('You have configured no validation of the legitimacy of the cas server. This is not recommended for production use.');
        self::$_PHPCAS_CLIENT->setNoCasServerValidation();
        phpCAS::traceEnd();
    }

function checkAndSetUserSession()
{
    // store session data
    if (!isset($_SESSION['user'])) {
        $_SESSION['user'] = null;
    }
    if (isset($_REQUEST['login']) or isset($_REQUEST['logout'])) {
        // initialize phpCAS
        phpCAS::client(CAS_VERSION_2_0, 'login.kth.se', 443, '');
        //phpCAS::proxy(CAS_VERSION_2_0,'login.kth.se',443,'');
        phpCAS::setNoCasServerValidation();
        // If you want the redirect back from the login server to enter your application by some
        // specfic URL rather than just back to the current request URI, call setFixedCallbackURL.
        //phpCAS::setFixedCallbackURL('http://xml.csc.kth.se/~wiiala/DM2517/project/php/index.php');
        // force CAS authentication
        phpCAS::forceAuthentication();
        // at this step, the user has been authenticated by the CAS server
        // and the user's login name can be read with phpCAS::getUser().
        $_SESSION['user'] = phpCAS::getUser();
        //Logga ut och redirecta till vår standardsida
        if (isset($_REQUEST['logout'])) {
            unset($_SESSION['user']);
            phpCAS::logoutWithRedirectService('http://kth.kribba.com/');
        }
    }
}