WooCommerce - Shortcode to count the number of items purchas

<?php

// WooCommerce - Shortcode to count the number of items purchased by the current user

add_shortcode( 'itemscount', 'items_count' );
function items_count() {

  function get_purchased_products() {
    $products = array();
    // get all the customer's orders
    $customer_orders = get_posts( array(
      'numberposts' => - 1,
      'meta_key'    => '_customer_user',
      'meta_value'  => get_current_user_id(),
      'post_type'   => 'shop_order', // WC orders post type
      'post_status' => 'on-hold' // Only orders with status "completed"
    ) );

    // go through each of the current customer's orders
    foreach ( $customer_orders as $customer_order ) {
      $order    = wc_get_order( $customer_order );
      $items    = $order->get_items();
      // go through each order itemr
      foreach ( $items as $item ) {
        $id = $item['product_id'];
        // if product not in the array, add it
        if ( ! array_key_exists( $item['product_id'], $products ) ) {
          $products[ $id ] = array(
            'name' => $item['name'],
            'count' => 0,
          );
        }
        // increment product count from cart quantity
        $products[ $id ]['count'] += $item->get_quantity();
      }
    }
    return $products;
  } // end function

  foreach ( get_purchased_products() as $id => $product ) {
    print "<p>$id <b>$product[name]</b> bought $product[count] times</p>";
  }
} // end function