Magento 1 - get category ID from product ID

Question

In magento how to get the category id of each product from its product ID.

   $items    = $request->getAllItems();
    $c           = count($items); 

            


        

Answer 1

public function getProductCategory() {
    /* @var $product Mage_Catalog_Model_Product */
    $product = Mage::registry('current_product');
    if ($product->getId()) {
        $categoryIds = $product->getCategoryIds();
        if (is_array($categoryIds) and count($categoryIds) >= 1) {
            return Mage::getModel('catalog/category')->load($categoryIds[0]);
        };
    }
    return false;
}

Answer 2

suppose if you want all category ids from current product id you can get from

Mage::registry('current_product')->getCategoryIds();

it may help you

Answer 3

Mage::registry('current_product')->getCategoryId();

this way, category id of a current product can be get.