PHP e upload files multipli

[timberwolf]

ho questo errore quando tento di effettuare un upload multiplo di files:

Warning: move_uploaded_file() [function.move-uploaded-file]: The second argument to copy() function cannot be a directory in C:\Program Files\Ampps\www\italiamo_offline\admin\cp_upload_g allery_2.php on line 8

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move 'C:\Program Files\Ampps\tmp\phpCC4B.tmp' to 'C:\Program Files\Ampps\www\italiamo_offline\admin' in C:\Program Files\Ampps\www\italiamo_offline\admin\cp_upload_g allery_2.php on line 8
File Caricati!

questo, invece, il codice php:

<?php  

$path = $_POST['path'];

$base = dirname(__FILE__)."$path";

foreach ($_FILES["images"] as $images) {    
        move_uploaded_file($images, "$base");    
} 
  
echo "File Caricati!";

?>

questo l'html:

<div id="main">
<label for="files">[b]Carica Files:[/b]</label>


        <form method="post" enctype="multipart/form-data" action="cp_upload_gallery_2.php">  
            <input type="file" name="images" id="images" multiple />
            <input type="hidden" name="path" value="<?php echo $path; ?>" />
            <button type="submit" id="btn">Invia Files</button>  
        </form>  
</div>

il problema, da quanto ho capito, é il percorso che non é valido ma non capisco perché..