Method getImageByProductId

public static function getImageByProductId($id)
{
    $db = Factory::getDBO();
    $q = 'SELECT p.image' . ' FROM #__phocacart_products AS p' . ' WHERE p.id = ' . (int) $id . ' ORDER BY p.id' . ' LIMIT 1';
    $db->setQuery($q);
    $image = $db->loadResult();
    return $image;
}