upload immagine

[lukezz]

Salve a tutti!
ho un e-commerce che mi da problemi con l'upload di immagini, sia quando creo una galleria che quando creo un nuovo prodotto, riesce ad inserire tutti i dati nel database tranne il nome della foto e la foto nella cartella di destinazione, ecco il codice:

function addCategory()
{
    $name        = $_POST['txtName'];
    $description = $_POST['mtxDescription'];
    $image       = $_FILES['fleImage'];
    $parentId    = $_POST['hidParentId'];
    
    $catImage = uploadImage('fleImage', SRV_ROOT . '/images/category/');
    
    $sql   = "INSERT INTO tbl_category (cat_parent_id, cat_name, cat_description, cat_image) 
              VALUES ($parentId, '$name', '$description', '$catImage')";
    $result = dbQuery($sql) or die('Cannot add category' . mysql_error());
    
    header('Location: index.php?catId=' . $parentId);              
}

/*
    Upload an image and return the uploaded image name 
*/
function uploadImage($inputName, $uploadDir)
{
    $image     = $_FILES[$inputName];
    $imagePath = '';
    
    // if a file is given
    if (trim($image['tmp_name']) != '') {
        // get the image extension
        $ext = substr(strrchr($image['name'], "."), 1); 

        // generate a random new file name to avoid name conflict
        $imagePath = md5(rand() * time()) . ".$ext";
        
        // check the image width. if it exceed the maximum
        // width we must resize it
        $size = getimagesize($image['tmp_name']);
        
        if ($size[0] > MAX_CATEGORY_IMAGE_WIDTH) {
            $imagePath = createThumbnail($image['tmp_name'], $uploadDir . $imagePath, MAX_CATEGORY_IMAGE_WIDTH);
        } else {
            // move the image to category image directory
            // if fail set $imagePath to empty string
            if (!move_uploaded_file($image['tmp_name'], $uploadDir . $imagePath)) {
                $imagePath = '';
            }
        }    
    }

    
    return $imagePath;
} 

Cosa sbaglio? ho controllato tutto ma niente. (almeno penso)