How to Add BOGO (Buy One Get One) Offers Based on WooCommerce Cart Total Range?

The post is about providing dynamic BOGO offers based on the cart total amount. The below code snippet will offer different products based on the pre-defined cart total ranges that help a store owner to implement a tiered pricing strategy.

function ts_add_products_to_cart() {
    global $woocommerce;

    $cart_total = $woocommerce->cart->total;

    if (!is_admin()) {
        // Define your cart total ranges and corresponding products
        $ranges_and_products = array(
            array('min' => 50, 'max' => 100, 'products' => array(470)),       // For $0 to $100, add Product A
            array('min' => 100, 'max' => 200, 'products' => array(457, 470)), // For $101 to $200, add Product A & Product B
        );

        foreach ($ranges_and_products as $range) {
            $min = $range['min'];
            $max = $range['max'];

            if ($cart_total >= $min && $cart_total <= $max) {
                $products_to_add = $range['products'];

                // Check if the products are already in the cart
                $found_products = array();

                foreach ($products_to_add as $product_id) {
                    foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
                        $_product = $values['data'];
                        if ($_product->get_id() == $product_id) {
                            $found_products[] = $product_id;
                        }
                    }
                }

                // If any product is not found, add it to the cart
                foreach ($products_to_add as $product_id) {
                    if (!in_array($product_id, $found_products)) {
                        WC()->cart->add_to_cart($product_id);
                    }
                }

                // Stop further processing to prevent adding multiple sets of products
                return;
            }
        }
    }
}

add_action('template_redirect', 'ts_add_products_to_cart');

Output

When the customer’s cart total falls with the specified range of $50 to $100, the corresponding free product A is added to the cart.

When the cart total falls in the next specified range of $100-$200, both product A and product B is automatically added to the cart.

Similarly, you can add free gift based on selected quantity in WooCommerce that will dynamically alter the free products.