OpenCart how to add subcategories?

Question

PHP

Hello, there was such a question with opencart:
I display on the pages of product categories - categories with the following code:

<?php if ($categories) { ?>
   <?php foreach (array_chunk($categories, ceil(count($categories) / 4)) as $categories) { ?>
   <?php foreach ($categories as $category) { ?>
    <li><a href="<?php echo $category['href']; ?>"><?php echo $category['name']; ?></a> </li>
  <?php } ?>
  <?php } ?>
<?php } ?>

I need to display subcategories below each category, please tell me how to implement

Answer 1

get subsections in controller with getCategories() and display in template with child foreach