Another Upload File Question

[SupaComix]

Hey everyone. I am quite new to php, i've been programming it for about 2 weeks and this is about the first time where i've got so stuck that i actually have to ask someone. I have a form which uploads a file, it refreshes the page, uploads the file and then alerts the user to if the file has uploaded. To be honest im not sure why i keep getting the error. But here is the code:

 

This is the form that is used for the user to select the file

<form enctype="multipart/form-data" action="fileupload.php?op=up&user=<?php echo($user); ?>&fid=<?php echo($fid); ?>" method="POST">
    <input type="hidden" name="MAX_FILE_SIZE" value="100000000" />
  Choose a file to upload: 
    <input name="uploaded" type="file" id="uploaded" />
            <input type="submit" value="Upload File" />
        </form>

 

This is the upload code

if ($op == "up"){
$target = "uploads/";
$target = $target . basename($_FILES['uploaded']['name']);
echo($target);
if (move_uploaded_file($_FILES['uploaded']['tmp_name'], $target))
    {
	echo("The file ") . basename ($_FILES['uploadedfile']['name']). "has been uploaded!";
	$filesize = $uploaded_size;
	$sql = mysql_query("UPDATE tbl_files SET filesize='$filesize' WHERE fileid='$fid'");
}
else {
echo ("Sorry, there was a problem uploading your file.");
}
    }

 

If you could point out any problems with it please do.

[phpknight]

Do a var_dump on $_FILES to make sure they are even there.