OpenCart 🇺🇦

$product_attribute_group_data = array();

$product_attribute_group_query = $this->db->query("SELECT ag.attribute_group_id, agd.name FROM " . DB_PREFIX . "product_attribute pa LEFT JOIN " . DB_PREFIX . "attribute a ON (pa.attribute_id = a.attribute_id) LEFT JOIN " . DB_PREFIX . "attribute_group ag ON (a.attribute_group_id = ag.attribute_group_id) LEFT JOIN " . DB_PREFIX . "attribute_group_description agd ON (ag.attribute_group_id = agd.attribute_group_id) WHERE pa.product_id = '" . (int)$product_id . "' AND agd.language_id = '" . (int)$this->config->get('config_language_id') . "' GROUP BY ag.attribute_group_id ORDER BY ag.sort_order, agd.name");

foreach ($product_attribute_group_query->rows as $product_attribute_group) {
	$product_attribute_data = array();

	$product_attribute_query = $this->db->query("SELECT a.attribute_id, ad.name, pa.text FROM " . DB_PREFIX . "product_attribute pa LEFT JOIN " . DB_PREFIX . "attribute a ON (pa.attribute_id = a.attribute_id) LEFT JOIN " . DB_PREFIX . "attribute_description ad ON (a.attribute_id = ad.attribute_id) WHERE pa.product_id = '" . (int)$product_id . "' AND a.attribute_group_id = '" . (int)$product_attribute_group['attribute_group_id'] . "' AND ad.language_id = '" . (int)$this->config->get('config_language_id') . "' AND pa.language_id = '" . (int)$this->config->get('config_language_id') . "' ORDER BY a.sort_order, ad.name");

	foreach ($product_attribute_query->rows as $product_attribute) {
		$product_attribute_data[] = array(
			'attribute_id' => $product_attribute['attribute_id'],
			'name'         => $product_attribute['name'],
			'text'         => $product_attribute['text']		 	
		);
	}

	$product_attribute_group_data[] = array(
		'attribute_group_id' => $product_attribute_group['attribute_group_id'],
		'name'               => $product_attribute_group['name'],
		'attribute'          => $product_attribute_data
	);			
}

return $product_attribute_group_data;