Widget to count parent categories, child categories, posts

<?php
$num_posts = wp_count_posts( 'post' );
$num_pages = wp_count_posts( 'page' );
$num_comm = wp_count_comments( );
$num_cats  = wp_count_terms('category');
$num_parent_cats=count(get_categories('parent=0&hide_empty=0'));
$num_child_cats = $num_cats-$num_parent_cats;
$num_tags = wp_count_terms('post_tag');
echo '<p>number of published posts: ' . $num_posts->publish . '</p>';
echo '<p>number of draft posts: ' . $num_posts->draft . '</p>';
echo '<p>number of pending posts: ' . $num_posts->pending . '</p>';
echo '<p>number of future posts: ' . $num_posts->future . '</p>';
echo '<p>number of trash posts: ' . $num_posts->trash . '</p>';
echo '<p>number of published pages: ' . $num_pages->publish . '</p>';
echo '<p>number of draft pages: ' . $num_pages->draft . '</p>';
echo '<p>number of pending pages: ' . $num_pages->pending . '</p>';
echo '<p>number of future pages: ' . $num_pages->future . '</p>';
echo '<p>number of trash pages: ' . $num_pages->trash . '</p>';
echo '<p>number of approved comments: ' . $num_comm->approved . '</p>';
echo '<p>number of moderated comments: ' . $num_comm->moderated . '</p>';
echo '<p>number of spam comments: ' . $num_comm->spam . '</p>';
echo '<p>number of trashed comments: ' . $num_comm->trash . '</p>';
echo '<p>number of categories: ' . $num_cats . '</p>';
echo '<p>number of child categories: ' . $num_child_cats . '</p>';
echo '<p>number of tags: ' . $num_tags . '</p>';
?>