How to get all subcategories of Opencart?

Question

opencart

How to teach all neighboring subcategories of this subcategory.
CMS opencart.

Answer 1

$data['categories'] = array();

            $results = $this->model_catalog_category->getCategories($category_id);

      if (!$results && isset($this->request->get['path'])) {
        $parts = explode('_', $this->request->get['path']);
        $cur_id = array_pop($parts);
        if (!empty($parts)) {
          $results = $this->model_catalog_category->getCategories(array_pop($parts));
        }
      }
      
            foreach ($results as $result) {
                $filter_data = array(
                    'filter_category_id'  => $result['category_id'],
                    'filter_sub_category' => true
                );

                $data['categories'][] = array(
                    'name' => $result['name'],
          'category_id' => $result['category_id'],
          'category_current' => isset($cur_id) && $cur_id ? $cur_id : false,
                    'href' => $this->url->link('product/category', 'path=' . $this->request->get['path'] . '_' . $result['category_id'] . $url)
                );
            }

This is how I displayed it inside the category. If there are no children, display adjacent ones