Magento 2: get sub categories with limit

Question

I have number of sub categories under main category. I have to get only four sub categories of main category. Any solution for this?

Here is the code for get sub categories:

$catId = 3; // Parent Category ID
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$subcategory = $objectManager->create('Magento\Catalog\Model\Category')->load($catId);
$subcats = $subcategory->getChildrenCategories();
    foreach ($subcats as $subcat) {
        echo $subcat->getName();
    }
}

Answer 1

Try Below Snippet:

$catId = 3; // Parent Category ID
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$subcategory = $objectManager->create('Magento\Catalog\Model\Category')->load($catId);
$cnt = 0;
$subcats = $subcategory->getChildrenCategories();
    foreach ($subcats as $subcat) {
        $cnt++;
        echo $subcat->getName();
        if($cnt == 4)
             break;
    }
}

Answer 2

Use setPageSize to limit the categories.

$category = $this->_categoryModel->load($categoryId);
$subCategories = $category->getChildrenCategories()->setPageSize(3);

Reference Link

Note - Do not use object manager in phtml file. It's not recommended way instead create Block Class.