function reAuth($uri){
    //Separate document name from uri
    //$tokens = explode('/', $uri);
    //$page = end($tokens);

    $abs_us_root=$_SERVER['DOCUMENT_ROOT'];

    $self_path=explode("/", $_SERVER['PHP_SELF']);
    $self_path_length=count($self_path);
    $file_found=FALSE;

    for($i = 1; $i < $self_path_length; $i++){
        array_splice($self_path, $self_path_length-$i, $i);
        $us_url_root=implode("/",$self_path)."/";

        if (file_exists($abs_us_root.$us_url_root.'z_us_root.php')){
            $file_found=TRUE;
            break;
        }else{
            $file_found=FALSE;
        }
    }

    $urlRootLength=strlen($us_url_root);
    $page=substr($uri,$urlRootLength,strlen($uri)-$urlRootLength);

    //bold($page);

    $db = DB::getInstance();
    $id = null;

    //retrieve page details
    $query = $db->query("SELECT id, page, re_auth FROM pages WHERE page = ?",[$page]);
    $count = $query->count();
    if ($count==0){
        bold('<br><br>Page not found. Something went wrong.');
        die();
    }
    $results = $query->first();

    $pageDetails = array( 'id' =>$results->id, 'page' => $results->page, 'private' =>$results->private);

    $pageID = $results->id;

    //If page does not exist in DB, allow access
    if (empty($pageDetails)){
        return true;
    }elseif ($pageDetails['re_auth'] == 0){//If page is public, allow access
        return true;
    }else{ //Authorization is required.  Insert your authorization code below.

echo "Authorization required. Insert code here for that.";

  }
}