function sec_session_start(){
    $session_name = 'cms_session';
    $secure = false;
    $httponly = true;
    if(ini_set('session.use_only_cookies', 1) === FALSE) {
        header("Location: /error/");
        exit();
    }
    $cookieParams = session_get_cookie_params();
    session_set_cookie_params(3600,$cookieParams["path"],$cookieParams["domain"],$secure,$httponly);
    session_name($session_name);
    session_start();
    session_regenerate_id(false);
}
function login_check($db_connect) {
    // Check if all session variables are set 
    if (isset($_SESSION['user_id'], $_SESSION['login_string'])){
        $user_id = $_SESSION['user_id'];
        $login_string = $_SESSION['login_string'];
        $user_browser = $_SERVER['HTTP_USER_AGENT'];
        $sql = "SELECT user_password FROM users WHERE user_id = :userid LIMIT 1";
        $results = $db_connect->prepare($sql);
        if ($results->execute(array(':userid' => $user_id))){
            $check_results = $results->fetch();
            $login_check = $results->rowCount();
            if ($login_check != 0){
                $login_check = hash('sha512',$user_id.$user_browser);
                if ($login_check == $login_string) {
                    // USER IS LOGGED IN
                    return true;
                } else {
                    return false;
                }
            } else { 
                return false;
            }
        } else {
            return false;
        }
    } else {
        return false;
    }
}