Mình chia sẻ đoạn code hiển thị phần trăm giảm giá trên ảnh sản phẩm trong Woocommerce.
function woocommerce_custom_sale_savings() { global $product; if ( ! $product->is_on_sale() ) return; if ( $product->is_type( 'simple' ) ) { $max_percentage = ( ( $product->get_regular_price() - $product->get_sale_price() ) / $product->get_regular_price() ) * 100; } elseif ( $product->is_type( 'variable' ) ) { $max_percentage = 0; foreach ( $product->get_children() as $child_id ) { $variation = wc_get_product( $child_id ); $price = $variation->get_regular_price(); $sale = $variation->get_sale_price(); if ( $price != 0 && ! empty( $sale ) ) $percentage = ( $price - $sale ) / $price * 100; if ( $percentage > $max_percentage ) { $max_percentage = $percentage; } } } if ( $max_percentage > 0 ) { return '<span class="onsale">-' . round($max_percentage) . '%</span>'; } } add_filter('woocommerce_sale_flash', 'woocommerce_custom_sale_savings', 10, 3);