Magento diplaying category tree dynamically - php

Question

I need to display my category tree as a list in a responsive menu.
The idea is to display the highest level categories. and create dynamically a list that will be displayed for each category that has children.
I stumbled upon a code that helped me a bit, but i can't figure how to get the job done.
Here is the code:
<?php
$rootCatId = Mage::app()->getStore()->getRootCategoryId();
function getTreeCategories($parentId, $isChild){
$allCats = Mage::getModel('catalog/category')->getCollection()
->addAttributeToSelect('*')
->addAttributeToFilter('is_active','1')
->addAttributeToFilter('include_in_menu','1')
->addAttributeToFilter('parent_id',array('eq' => $parentId));
$class = ($isChild) ? "sub-cat-list" : "cat-list";
$html .= '<ul class="'.$class.'">';
$children = Mage::getModel('catalog/category')->getCategories(7);
foreach ($children as $category) {
{
$html .= '<li>'.$category->getName()."";
$subcats = $category->getChildren();
if($subcats != ''){
$html .= getTreeCategories($category->getId(), true);
}
$html .= '</li>';
}
$html .= '</ul>';
return $html;
}
$catlistHtml = getTreeCategories($rootCatId, false);
echo $catlistHtml;
?>
Thank you in advance.

Answer 1

you can use this to create category tree:
<?php
$rootCatId= Mage::app()->getStore()->getRootCategoryId();
$categories = Mage::getModel('catalog/category')->getCategories($rootCatId);
$output= '<ul>';
foreach($categories as $category) {
$cat = Mage::getModel('catalog/category')->load($category->getId());
$count = $cat->getProductCount();
$output .= '<li>' . '' . $category->getName() . "";
if ($category->hasChildren()) {
$children = Mage::getModel('catalog/category')->getCategories($category->getId());
$array .= get_categories($children);
}
$output .= '</li>';
}
echo $output . '</ul>';
?>
For the effects of showing / hiding categories and subcategories, you can use plain css or jQuery / Prototype.