Getting wordpress child categories data by parent category

child_categories.php

	//  To getting the parent category by slug
	$digital_post_cat = get_category_by_slug( 'digital-post' );
	$digital_post_args = array(
		'type'                     => 'post',
		'child_of'                 => $digital_post_cat->term_id,
		'orderby'                  => 'name',
		'order'                    => 'ASC',
		'hide_empty'               => FALSE,
		'hierarchical'             => 1,
		'taxonomy'                 => 'category',
	); 
	//  To getting the child categories
	$digital_post_child_categories = get_categories($digital_post_args );
	
	//  Storing the child categories id in array()
	$digital_child_list = array();
	if ( !empty ( $digital_post_child_categories ) ){
		foreach ( $digital_post_child_categories as $child_category ){
			$digital_child_list[] = $child_category->term_id;
		}
	}	
	//  To getting the child category information
	foreach($digital_child_list as $child_Cat_ID){
		$childData = get_category($child_Cat_ID);
		echo $childData->name;
		echo $childData->description;
	}