Aiuto su upload multiplo

[fermat]

sto provando a caricare più foto contemporaneamente:

// upload_images.php
<form action="check_image.php" method="post" enctype="multipart/form-data">
            <table>
                <tr>
                    <td>Upload: </td>
                </tr>
                <tr>
                    <td><input type="file" name="uploadfile" /></td>
                </tr>
                <tr>
                    <td><input type="file" name="uploadfile2" /></td>
                </tr>
                <tr>
                    <td><input type="file" name="uploadfile3" /></td>
                </tr>
                <tr>
                    <td>Caption: </td>
                    <td><input type="text" name="caption" /></td>
                </tr>
                <tr>
                    <td>Category: </td>
                    <td>
                        <?php
                        include_once 'config.php';
                        $query = "select * from category order by title asc";
                        $result = mysql_query($query) or die(mysql_error($link));
                        echo '<select name="category">';
                        echo '<option value="javascript:void(0)">Scegli la categoria</option>';
                        while ($riga = mysql_fetch_array($result)) {
                            echo "<option value=" . $riga['title'] . ">" . $riga['title'] . "</option>";
                        }
                        echo '</select>';
                        echo '

';
                        ?>
                    </td>
                </tr>
                <tr>
                    <td><input type="submit" name="upload" value="Upload" /></td>
                </tr>
            </table>
        </form>

// check_image.php
$error = 'Formato non supportato';
switch ($type) {
    case IMAGETYPE_GIF:
        $image = imagecreatefromgif($_FILES['uploadfile']['tmp_name']) or die($error);
        $image2 = imagecreatefromgif($_FILES['uploadfile2']['tmp_name']) or die($error);
        $image3 = imagecreatefromgif($_FILES['uploadfile3']['tmp_name']) or die($error);
        break;
    case IMAGETYPE_JPEG:
        $image = imagecreatefromjpeg($_FILES['uploadfile']['tmp_name']) or die($error);
        $image2 = imagecreatefromjpeg($_FILES['uploadfile2']['tmp_name']) or die($error);
        $image3 = imagecreatefromjpeg($_FILES['uploadfile3']['tmp_name']) or die($error);
        break;
    case IMAGETYPE_PNG:
        $image = imagecreatefrompng($_FILES['uploadfile']['tmp_name']) or die($error);
        $image2 = imagecreatefrompng($_FILES['uploadfile2']['tmp_name']) or die($error);
        $image3 = imagecreatefrompng($_FILES['uploadfile3']['tmp_name']) or die($error);
        break;
    default:
        die($error);
}

// inserisce le info nella tabella
$query = 'insert into images (image_caption,image_date,image_category) values ("' . $image_caption . '","' . $image_date . '","' . $image_category . '")';
$result = mysql_query($query, $db) or die(mysql_error($db));
// recupera il valore image_id generato in fase di inserimento
$last_id = mysql_insert_id();
// assicuriamo che l'immagine non sovrascriva le altre esistenti
$imagename = $last_id . "_" . $_POST['category'] . '.jpg';
$nome = imagejpeg($image, $dir . '/' . $imagename, 100);
$nome2 = imagejpeg($image2, $dir . '/' . $imagename, 100);
$nome3 = imagejpeg($image3, $dir . '/' . $imagename, 100);
imagedestroy($image, $image2, $image3); 

in pratica mi carica solo l'ultima foto e mi da un errore su imadestry dicendo che la sintassi è sbagliata.
come faccio a caricare più foto??