Magento1: All active categories, save to csv-file

Magento1: All active categories, save to csv-file

<?php
/**
 * allActiveCategories.php
 *
 * Gets all active catgories and writes them to a file "categories.csv"
 * Put this in your magento 1 webroot and run from your browser
 * krillo
 */
require __DIR__ . '/app/Mage.php';
Mage::app(Mage_Core_Model_App::ADMIN_STORE_ID)->setUseSessionInUrl(false);
$cat = array();
$cats = array();
$categories = Mage::getModel('catalog/category')
->getCollection()
->addAttributeToSelect('*')
->addIsActiveFilter();
foreach ($categories as $category){
    echo $category->getId() . ' ' . $category->getName() . '<br>';
    $cat['id'] = $category->getId();
    $cat['name'] = $category->getName();
    $cat['url_key'] = $category->getUrlKey();
    $cat['url_path'] = $category->getUrlPath();
    $cats[$category->getId()] = $cat;
}
//print_r($cats);

$file = fopen("categories.csv","w");
foreach ($cats as $row){
  fputcsv($file,$row);
}
fclose($file);