Code-Snippets-Functions/Execute a function on a child site/WooCommerce/inventory-re-stock-when-a-pending-order-is-cancelled.txt

add_action('woocommerce_order_status_pending_to_cancelled', 'restore_stock_levels_on_pending_to_cancel', 10, 2);
function restore_stock_levels_on_pending_to_cancel( $order_id, $order ) {
    // Restore stock levels
    wc_maybe_increase_stock_levels( $order_id );

    // Getting WC_emails objects
    $email_notifications = WC()->mailer()->get_emails();

    // Sending the cancelled order email
    $email_notifications['WC_Email_Cancelled_Order']->trigger( $order_id );
}