showing-sale-prices-in-the-woocommerce-checkout code example

Example: showing-sale-prices-in-the-woocommerce-checkout

function show_sale_price_at_checkout( $subtotal, $cart_item, $cart_item_key ) {
    
    $product = $cart_item['data'];
    $quantity = $cart_item['quantity'];
    if ( ! $product ) {
        return $subtotal;
    }
    $regular_price = $sale_price = $suffix = '';
    if ( $product->is_taxable() ) {
        if ( 'excl' === WC()->cart->tax_display_cart ) {
            $regular_price = wc_get_price_excluding_tax( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) );
            $sale_price    = wc_get_price_excluding_tax( $product, array( 'price' => $product->get_sale_price(), 'qty' => $quantity ) );
            if ( WC()->cart->prices_include_tax && WC()->cart->tax_total > 0 ) {
                $suffix .= ' ' . WC()->countries->ex_tax_or_vat() . '';
            }
        } else {
            $regular_price = wc_get_price_including_tax( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) );
            $sale_price = wc_get_price_including_tax( $product, array( 'price' => $product->get_sale_price(), 'qty' => $quantity ) );
            if ( ! WC()->cart->prices_include_tax && WC()->cart->tax_total > 0 ) {
                $suffix .= ' ' . WC()->countries->inc_tax_or_vat() . '';
            }
        }
    } else {
        $regular_price    = $product->get_price() * $quantity;
        $sale_price       = $product->get_sale_price() * $quantity;
    }
    if ( $product->is_on_sale() && ! empty( $sale_price ) ) {
        $price = wc_format_sale_price(
                     wc_get_price_to_display( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) ),
                     wc_get_price_to_display( $product, array( 'qty' => $quantity ) )
                 ) . $product->get_price_suffix();
    } else {
        $price = wc_price( $regular_price ) . $product->get_price_suffix();
    }
   
    $price = $price . $suffix;
    return $price;
}
add_filter( 'woocommerce_cart_item_subtotal', 'show_sale_price_at_checkout', 10, 3 );