is_type( 'variable' ) ) { $product = $args['product']; $attribute = $args['attribute']; $variations = $product->get_available_variations(); // Iterate over each variation foreach ( $variations as $variation ) { $variation_obj = wc_get_product( $variation['variation_id'] ); // Check if the variation is on sale if ( $variation_obj->is_on_sale() ) { foreach ( $variation['attributes'] as $attr_name => $attr_value ) { // Only add data-sale to the matching attribute options if ( 'attribute_' . sanitize_title( $attribute ) === $attr_name ) { // Use preg_replace to add data-sale="true" to the correct element $html = preg_replace( '/ is_type( 'variable' ) ) { $variations = $product->get_available_variations(); $on_sale = false; foreach ( $variations as $variation ) { if ( $variation['display_price'] < $variation['display_regular_price'] ) { $on_sale = true; break; } } if ( $on_sale ) { ?>