Get parent category, sub-category and product count in Magento

Here is a quick and complete code to load parent category from current category page and to get sub categories of parent category along with their product count.

// If you are in any category page then load its parent category

// Else load root category; generally root category has ID = 3

if (is_object(Mage::registry('current_category'))) {     $parentCategory =  Mage::getModel('catalog/category')->load(Mage::registry('current_category')->getId())->getParentCategory(); } else {        $rootCategoryId = 3;     $parentCategory =  Mage::getModel('catalog/category')->load($rootCategoryId); } //$_categories = $parentCategory->getChildren(); $_categories = $parentCategory->getChildrenCategories(); $productCollection = Mage::getResourceModel('catalog/product_collection'); //$layer = Mage::getSingleton('catalog/layer'); //$layer->prepareProductCollection($productCollection); $productCollection->addCountToCategories($_categories); // Displaying active categories with their product count foreach ($_categories as $_category):     if($_category->getIsActive()): ?>         <a href="<?php echo $_category->getUrl() ?>">             <?php echo Mage::helper('core')->htmlEscape($_category->getName()) ?>         </a>         <?php echo '('.$_category->getProductCount().')'; ?>         <br /> <?php            endif; endforeach; ?> Hope it helps. Thanks.