If you run WooCommerce store promotions, this little snippet will help you with that. For example, how to run a “Buy 2 products, get one half off” or a “Buy 3 products, get the cheapest one for free” campaign?
The trick behind this workaround is to find the cheapest item by looping through the cart, and then to set its price so that it’s lower than the regular price. Enjoy!
With the help of the snippet below, I was able to discount the cheapest item in the cart by 50%!
PHP Snippet: Set The Cheapest Product Sale Price @ WooCommerce Cart
The snippet below applies a 50% discount to the cheapest item in the cart (also called BOGO 50 = Buy One Get One 50% Off).
If you wish to see the “slashed price” in the cart as per the screenshot above, you can use my WooCommerce: Display Regular & Sale Price @ Cart Table snippet.
/** * @snippet Discount Cheapest Cart Item * @how-to Get CustomizeWoo.com FREE * @author Rodolfo Melogli * @compatible WooCommerce 8 * @donate $9 https://businessbloomer.com/bloomer-armada/ */ add_action( ‘woocommerce_before_calculate_totals’, ‘bbloomer_cheapest_cart_item_half_off’, 9999 ); function bbloomer_cheapest_cart_item_half_off( $cart ) { if ( is_admin() && ! defined( ‘DOING_AJAX’ ) ) return; if ( did_action( ‘woocommerce_before_calculate_totals’ ) >= 2 ) return; if ( count( $cart->get_cart() ) < 2 ) return; // AT LEAST 2 PRODUCTS IN THE CART $min = PHP_FLOAT_MAX; // LOOP THROUGH CART TO FIND CHEAPEST ITEM foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) { if ( $cart_item[‘data’]->get_price() <= $min ) { $min = $cart_item['data']->get_price(); $cheapest = $cart_item_key; } } // LOOP THROUGH CART TO REDUCE CHEAPEST ITEM PRICE BY 50% foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) { if ( $cheapest == $cart_item_key ) { $price = $cart_item[‘data’]->get_price() / 2; $cart_item[‘data’]->set_price( $price ); $cart_item[‘data’]->set_sale_price( $price ); } } }
Where to add custom code?
You should place PHP snippets at the bottom of your child theme functions.php file and CSS at the bottom of its style.css file. Make sure you know what you are doing when editing such files – if you need more guidance, please take a look at my guide “Should I Add Custom Code Via WP Editor, FTP or Code Snippets?” and my video tutorial “Where to Place WooCommerce Customization?”
Does this snippet (still) work?
Please let me know in the comments if everything went as expected. I would be happy to revise the snippet if you report otherwise (please provide screenshots). I have tested this code with Storefront theme, the WooCommerce version listed above and a WordPress-friendly hosting.
If you think this code saved you time & money, feel free to join 17,000+ WooCommerce Weekly subscribers for blog post updates and 250+ Business Bloomer supporters for 365 days of WooCommerce benefits. Thank you in advance!
Need Help with WooCommerce?
Check out these free video tutorials. You can learn how to customize WooCommerce without unnecessary plugins, how to properly configure the WooCommerce plugin settings and even how to master WooCommerce troubleshooting in case of a bug!
Rodolfo Melogli
Business Bloomer Founder
Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza.
