How to get child categories using object manager?

Question

For now I'm getting category name.

This is my code:

app/code/Vendor/Module/view/frontend/templates/storecategories.phtml

<?php
 $categoryId = 65;
 $_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
 $category = $_objectManager->create('Magento\Catalog\Model\Category')
 ->load($categoryId);
 $parent = $category->getName();
 echo $parent?>

What would be next steps to get current categories subcategories?

Answer 1

Try This

 $objectManager = \Magento\Framework\App\ObjectManager::getInstance(); // Instance of Object Manager
 $categoryFactory = $objectManager->get('\Magento\Catalog\Model\CategoryFactory');// Instance of Category Model
 $categoryId = 15; // YOUR CATEGORY ID
 $category = $categoryFactory->create()->load($categoryId);
 // Children Categories
 $childrenCategories = $category->getChildrenCategories();

• Rufus: When I try to echo $category->getChildrenCategories(); I got this error: Recoverable Error: Object of class Magento\Catalog\Model\ResourceModel\Category\Collection could not be converted to string Maybe you know the solution?
• Ghulam.M: $ChildrenCategories is in form of array try printing it by print_r(childrenCategories)
• Rufus: I intend to put it into foreach loop and display it in <ul> <li>. I suppose it's not possible with print_r. Do you have any suggestion?
• Ghulam.M: try using for each loop foreach($childrenCategories as $childSubcategorie) { echo ' --> '.$childSubcategorie->getName().'<br/>'; }
• Rufus: Thank's a lot!!

Answer 2

Have you tried the following?

 $category->getChildrenCategories();