upload proszę o pomoc w kodzie Opcje

[worth-to-see.com]

proszę o pomoc, chce żeby odwiedzający strone mogli za jej pomoca wgrywac na server pliki z fotkami - mam takki kod ale wywala mi zebym zrobił CHMOD 777 kotalogu docelowego (jest to zrobione!)

co tu nie gra?

$allowed_filetypes = array('.jpg','.gif','.bmp','.png');
$max_filesize = 524288;
$upload_path = './TRV/';

$filename = $_FILES['userfile']['name'];
$ext = substr($filename, strpos($filename,'.'), strlen($filename)-1);


if(!in_array($ext,$allowed_filetypes))
die('The file you attempted to upload is not allowed.');


if(filesize($_FILES['userfile']['tmp_name']) > $max_filesize)
die('The file you attempted to upload is too large.');


if(!is_writable($upload_path))
die('You cannot upload to the specified directory, please CHMOD it to 777.');


if(move_uploaded_file($_FILES['userfile']['tmp_name'],$upload_path . $filename))
echo 'Your file upload was successful, view the file <a href="' . $upload_path . $filename . '" title="Your File">here</a>';
else
echo 'There was an error during the file upload. Please try again.';