Buongiorno Piero, ecco il paste del codice...

Codice PHP:
include("config.php");  $info_query = mysql_query("SELECT * FROM ".$prefix."ProFolio_info ORDER BY id DESC LIMIT 0,1");  if(mysql_num_rows($info_query) > 0){     $red = "Location: index.php";     header($red);     die("Redirecting to ProFolio Index Page..."); }  $reply = '';  if(isset($_POST['submit'])){     $username = trim(strtolower($_POST['username']));     $password = trim(strtolower($_POST['password']));     $confirm = trim(strtolower($_POST['confirm']));     if($username != '' && $password != '' && $confirm != ''){         if($password == $confirm){             //Create Files             if(!file_exists('Files')){                 mkdir('Files', 0777);             }             if(!file_exists('Files_Icons')){                 mkdir('Files_Icons', 0777);             }             if(!file_exists('Files_Previews')){                 mkdir('Files_Previews', 0777);             }             chmod("Files", 0777);             chmod("Files_Icons", 0777);             chmod("Files_Previews", 0777);                          //Create Tables