Personalización Woocommerce con Código

Código asociado al video

function bbloomer_show_sales_to_admin_325() {
//https://businessbloomer.com/woocommerce-visual-hook-guide-archiveshopcat-page/
//https://docs.woocommerce.com/wc-apidocs/class-WC_Order.html
	global $product, $post;
	if ( current_user_can( 'administrator' ) ) {
		$print_h = 0;
		//https://developer.wordpress.org/reference/classes/wp_query/parse_query/
		$orders = get_posts( array(
				'post_type'   => 'shop_order',
				'post_status' => 'wc-completed',
				'order' => 'DESC',
				//'posts_per_page' => '1',
		) );
		$num_compras = 0;
		foreach ($orders as $order) {
			$order = new WC_Order( $order->ID );
			$items = $order->get_items();
			foreach( $items as $item ) {
				$product_id = $item['product_id'];
				if ( $post->ID == $product_id ) {
					if ($print_h == 0){
						echo '
<div class="sales-admin">
<b>Ventas:</b>
<ol>';
						$print_h = 1;
					}
					if ($num_compras <10) {
						echo '
<li>' . '('. $order->ID . ') #'. $item['quantity'] . ' ' . substr($order->get_date_completed(),0,10) . '</li>

'; 
						$num_compras = $num_compras + 1;
					}
				}
			}
		} 
		if ($print_h == 1) {
			echo '</ol>
</div>

';
		}
	}
}
	 
add_action( 'woocommerce_after_shop_loop_item', 'bbloomer_show_sales_to_admin_325', 10 );


add_filter( 'woocommerce_email_subject_customer_processing_order', 'bbloomer_change_processing_email_subject', 10, 2 );
 
function bbloomer_change_processing_email_subject( $subject, $order ) {
$subject = $order->get_billing_first_name() . ', Gracias por tu orden de ' . get_bloginfo( 'name', 'display' );
return $subject;
}