Magento Category Collection

collection.php

<?php
/**
 * @author T. Werring [email protected]
 * @project MagentoVPS
 * @created 30/12/14 16:57
 */


require_once 'app/Mage.php';


/**
 * Error reporting
 */
error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', 1);


$app = Mage::app();

for($i=3;$i<=4;$i++){
    $category = Mage::getModel('catalog/category')->load($i);
    if($category->getLevel() > 1) continue;
    $collection = Mage::getResourceModel('catalog/product_collection')
        ->setStoreId($app->getStore()->getId())
        ->addCategoryFilter($category)->addAttributeToFilter('status', array('eq' => 1));

    printf("%s (%d)=>%s<br/>",$category->getName(),$i,$collection->count());
}