$category = Mage::getModel('catalog/category')->load($categoryId); $children = $category->getChildren();
$categories = get_terms('category', array( 'orderby' => 'name', 'parent' => $parent_category_id, 'hide_empty' => 0 )); foreach ($categories as $category) { echo '' . $category->name . ''; }This example uses the WordPress core function get_terms() to retrieve child categories for a given parent category ID, and then loops through the array to display each subcategory as a link. Package/Library: WordPress Overall, the getChildren() function is commonly found in PHP libraries and packages related to content management systems, e-commerce platforms, and other web applications that involve hierarchical category structures.