Interference of WordPress codes - php

Question

On my site, I intend to display the total number of posts and comments on the site, as well as the total number of purchases made from my site.
The codes I wrote are as follows:
//copy to functions.php
// Total Comment
function site_total_comment_count() {
$num_comm = get_comment_count();
$num_comm = $num_comm['total_comments'];
echo $num_comm ;}
add_shortcode('total_comment_count', 'site_total_comment_count');
// Total Completed Orders
function total_completed_Orders() {
$query = new WC_Order_Query( array(
'limit' => 99999,
'status' => array( 'completed' ),
'return' => 'ids',
) );
$orders = $query->get_orders();
return count( $orders ); }
// Copy to the desired page
<h2> All Orders:
<?php echo total_completed_Orders(); ?>
</h2>
<h2> All Comments:
<?php echo site_total_comment_count(); ?>
</h2>
<h2> All Posts:
<?php
echo $wpdb->get_var("SELECT COUNT(ID) FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish'");
?>
</h2>
These codes work fine individually, but when I put all three on the target page, the stats show wrong.
Can you write me a code that shows the correct statistics of these three items from my site?

Answer 1

You can create a custom shortcode.
Try out this in your functions.php file:
add_shortcode('custom_shortcode', 'kb_get_details');
function kb_get_details()
{
//For total post.
global $wpdb;
$total_post = $wpdb->get_var("SELECT COUNT(ID) FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish'");
//For total comments.
$num_comm = get_comment_count();
$total_cmt = $num_comm['total_comments'];
//For total orders.
$query = new WC_Order_Query(array(
'limit' => 99999,
'status' => array('completed'),
'return' => 'ids',
));
$orders = $query->get_orders();
$total_orders = count($orders);
?>
<h2>All Posts : <?php esc_html_e($total_post); ?></h2>
<h2>All Comments: <?php esc_html_e($total_cmt); ?></h2>
<h2>All Orders : <?php esc_html_e($total_orders); ?></h2>
<?php
}
After that, this shortcode can be directly add it to your target page from the backend. You can also add it to any custom template by the use of do_shortcode('[custom_shortcode]');