Magento 2 Fetch all Categories and Sub Categories

ini_set('display_errors', 1); require __DIR__ . '/app/bootstrap.php'; $bootstrap = \Magento\Framework\App\Bootstrap::create(BP, $_SERVER); $objectManager = $bootstrap->getObjectManager();

$state = $objectManager->get('Magento\Framework\App\State'); $state->setAreaCode('adminhtml');

// used for updating product stock – and it’s important that it’s inside the while loop
$stockRegistry = $objectManager->get('Magento\CatalogInventory\Api\StockRegistryInterface');

// get list of all the categories
$categories = $objectManager->get('\Magento\Catalog\Model\ResourceModel\Category\CollectionFactory')->create(); $categories->addAttributeToSelect('*');

foreach ($categories as $category) { echo 'Catgeory Id: ' . $category->getId(); echo 'Catgeory Name: ' . $category->getName(); echo 'Catgeory Url: ' . $category->getUrl(); echo ''; }

// Get current store categories
$categoryHelper = $objectManager->get('\Magento\Catalog\Helper\Category'); $categories = $categoryHelper->getStoreCategories();

foreach ($categories as $category) { echo 'Catgeory Id: ' . $category->getId(); echo 'Catgeory Name: ' . $category->getName(); echo ''; }