$sql = "SELECT c.image, c.category_id, cd.name FROM " . DB_PREFIX . "category c
LEFT JOIN " . DB_PREFIX . "category_description cd ON (c.category_id = cd.category_id)
LEFT JOIN " . DB_PREFIX . "product_to_category p2c ON (c.category_id = p2c.category_id)
LEFT JOIN " . DB_PREFIX . "category_to_store c2s ON (p2c.category_id = c2s.category_id)
WHERE p2c.product_id = '" . (int) $product_info['product_id']. "' AND p2c.main_category = '1'
AND cd.language_id = '" . (int) $this->config->get('config_language_id') . "'
AND c2s.store_id = '" . (int)$this->config->get('config_store_id') . "'";
$query = $this->db->query($sql);
$cat_info = $query->row;
$data['products'][] = array(
'category_name' => $cat_info['name'],
...................