ti faccio vedere la stringa che ho scritto:

if (isset($_GET['indice']) && $_GET['indice'] == 1) { include("./inc_quad/1.txt"); }

ma mi da errore ...

Warning: main(./inc_quad/1.txt) [function.main]: failed to open stream: No such file or directory in /web/htdocs/www.bagnitalia.com/home/manuale.php on line 47

Warning: main() [function.include]: Failed opening './inc_quad/1.txt' for inclusion (include_path='.:/php/lib/php/') in /web/htdocs/www.bagnitalia.com/home/manuale.php on line 47