se uso $dir = 'http://www.gamempire.it/games/';
mi dice:

Warning: opendir(http://www.gamempire.it/games/) [function.opendir]: failed to open dir: not implemented in /web/htdocs/www.gamempire.it/home/num.php on line 12

Warning: readdir(): supplied argument is not a valid Directory resource in /web/htdocs/www.gamempire.it/home/num.php on line 15

Warning: closedir(): supplied argument is not a valid Directory resource in /web/htdocs/www.gamempire.it/home/num.php on line 26
Nella directory http://www.gamempire.it/games/ ci sono 0 file e -2 directory