upload a picture PHP (failing) - php

Question

I'm trying to build a form to upload a thumbnail (image) to the server - looks like the image is successfully uploading to the servers temp folder (I've confirmed this with get_defined_vars - its giving a temp file name and no errors), but its not being moved to the folder in the DOCUMENT_ROOT
The end goal here is to get the image uploaded then return a url to be stored in MySQL
HTML Form (located in DOCUMENT_ROOT/admin)
<form action="upload.php" method="post" enctype="multipart/form-data">
<label for="thumbnail">Thumbnail </label>
<input type="file" name="thumbnail" id="thumbnail">
</form>
Upload.php
<?php
$thumbnail = uploadfile($_FILE['thumbnail']['name'],$_SERVER['DOCUMENT_ROOT'].'/thumbs/upload/',$_FILE['thumbnail']['tmp_name']);
if(($thumbnail)!== FALSE)
{echo $thumbnail;} else {echo 'upload failed<br>';}
function uploadfile($origin, $dest, $tmp_name)
{
$origin = strtolower(basename($origin));
$fulldest = $dest.$origin;
$filename = $origin;
echo '$fulldest '.$fulldest.'<br />';
echo '$filename '.$filename.'<br />';
if (move_uploaded_file($tmp_name, $fulldest))
{return $filename;}
return false;
}
?>
result (note: I've removed the actual document root)
$fulldest [DOCUMENT_ROOT] /thumbs/upload/
$filename
upload failed
I've also set an .htaccess directive for upload 500M to make sure image size isn't the problem
<IfModule mod_php4.c>
php_value upload_max_filesize 500M
php_value post_max_size 500M
</IfModule>
EDIT:: My target directory is chmod 0777 for testing - so permissions shouldn't be the problem.

Answer 1

I can't help noticing that your $filename is empty and $fulldest lack the filename. I think the problem is that you use $_FILE and not $_FILES.
$thumbnail = uploadfile($_FILES['thumbnail']['name'],
$_SERVER['DOCUMENT_ROOT'].'/thumbs/upload/',
$_FILES['thumbnail']['tmp_name']);
I think that would work.