WooCommerce 드롭다운에서 제품 변형에 대한 재고 상태를 표시하는 방법은 무엇입니까?

<code class="php">add_filter( 'woocommerce_dropdown_variation_attribute_options_html', 'show_stock_status_in_dropdown', 10, 2 );
function show_stock_status_in_dropdown( $html, $args ) {
    // Get the product and attribute.
    $product = $args['product'];
    $attribute = $args['attribute'];

    // Get the variations for the product.
    $variations = $product->get_available_variations();

    // Loop through the variations and get the stock status for each one.
    foreach ( $variations as $variation ) {
        // Get the stock status.
        $stock_status = $variation['is_in_stock'] ? 'In Stock' : 'Out of Stock';

        // Append the stock status to the HTML.
        $html .= '<option value="' . esc_attr( $variation['variation_id'] ) . '" ' . selected( $args['selected'], $variation['variation_id'], false ) . '>' . esc_html( apply_filters( 'woocommerce_variation_option_name', $variation['attributes'][ $attribute ] ) ) . ' - (' . esc_html( $stock_status ) . ')</option>';
    }

    return $html;
}</code>