How to display category name by product id in Magento

If you want to get Category Name by Product Id in Magento. Use following code:

<?php 

$product = Mage::getModel('catalog/product')->load($_product->getId());

$cat_id = $product->getCategoryIds();

foreach($cat_id as $categorycbId) {

$category_id = Mage::getModel('catalog/category')->load($categorycbId);

echo $category_id->getName();

}

?>