Upload failure

[memermore]

here is my code that is supposed to upload files and save it to web server but somehow didn't work. Please help. I'm new in php and I'm using version 4

$thumb_loc = "../Folders/".$myfolder."/";
$thumb_loc = $thumb_loc.basename($myfile);
if (!file_exists($thumb_loc)){

if (move_uploaded_file($myfile,$thumb_loc)){
echo "<script language='javascript'> location.href='default.php?message=File uploaded&method=list';</script>";
}
else{
echo "<script language='javascript'> location.href='default.php?message=Uploading failed&method=list';</script>";
}
}
else{
echo "<script language='javascript'> location.href='default.php?message=File already exists&method=list';</script>";
}

[Markus]

What happens and what doesnt happen?
What is $myfile?

try this tutorial.