How to Maximize BOGO Offers by Offering Multiple Free Items in WooCommerce?

This advanced customization combines the power of Buy One Get One (BOGO) offers with the option for customers to grab multiple free items of their choice during the purchase. With easy checkbox selections, customers personalize their shopping experience, ensuring they only claim these bonuses when adding the main item to their cart.

Additionally, it ensures that customers can get access to these free samples only if they add the main product to the cart or else it pops up a notice message.

Solution: Maximize BOGO Offers by Offering Multiple Free Items in WooCommerce

This code snippet adds a form to the WooCommerce single product page that allows customers to select multiple freebies and order free sample products alongside the main product.

add_action('woocommerce_single_product_summary', 'ts_add_free_sample_add_cart', 35);

function ts_add_free_sample_add_cart() {
    global $product;

    ?>
    <form class="cart" method="post" enctype='multipart/form-data'>
        <fieldset>
            <legend>Select Free Products:</legend>
            <?php
            $main_product_id = $product->get_id();
            $free_product_ids = array('470', '457', '100'); // Replace with your actual product IDs

            foreach ($free_product_ids as $free_product_id) {
                $free_product = wc_get_product($free_product_id);
                ?>
                <label>
                    <input type="checkbox" name="free_samples[]" value="<?php echo esc_attr($free_product_id); ?>">
                    <?php echo esc_html($free_product->get_name()); ?>
                </label><br>
                <?php
            }
            ?>
        </fieldset>
        <input type="hidden" name="add-to-cart" value="order_free_products">
        <input type="hidden" name="main_product_id" value="<?php echo esc_attr($main_product_id); ?>">
        <input type="hidden" name="additional_value1" value="470">
        <input type="hidden" name="additional_value2" value="457">
        <input type="hidden" name="additional_value3" value="100">
        <button type="submit" class="single_add_to_cart_button button alt" style="background-color: #FFBF43">Order Free Products</button>
    </form>
    <?php
}

add_action('init', 'ts_process_free_samples_form_submission');

function ts_process_free_samples_form_submission() {
    if (isset($_POST['add-to-cart'])) {
        $main_product_id = isset($_POST['main_product_id']) ? $_POST['main_product_id'] : '';
        $free_samples = isset($_POST['free_samples']) ? $_POST['free_samples'] : array();
        $additional_value1 = isset($_POST['additional_value1']) ? $_POST['additional_value1'] : '';
        $additional_value2 = isset($_POST['additional_value2']) ? $_POST['additional_value2'] : '';
        $additional_value3 = isset($_POST['additional_value3']) ? $_POST['additional_value3'] : '';

        // Check if the main product is in the cart
        if (!empty($main_product_id) && !is_product_in_cart($main_product_id)) {
            // Check if the notice has already been added
            if (!wc_notice_count('error')) {
                wc_add_notice(__('Please add the main product to your cart to get access to these free products.', 'your-text-domain'), 'error');
            }
            return;
        }

        // Now you can use these values as needed
        // For example, you can access $additional_value1, $additional_value2, $additional_value3 here

        if (!empty($free_samples)) {
            foreach ($free_samples as $free_sample_id) {
                $product = wc_get_product($free_sample_id);

                if ($product) {
                    WC()->cart->add_to_cart($free_sample_id);
                }
            }
        }
    }
}

add_filter('woocommerce_cart_item_name', 'ts_alter_cart_item_name', 10, 3);

function ts_alter_cart_item_name($product_name, $cart_item, $cart_item_key) {
    if (isset($cart_item['free_samples'])) {
        foreach ($cart_item['free_samples'] as $free_sample_id) {
            if ($free_sample_id == $cart_item['product_id']) {
                $product = wc_get_product($free_sample_id);
                return 'Ordered: ' . $product->get_name();
            }
        }
    }
    return $product_name;
}

// Helper function to check if a product is in the cart
function is_product_in_cart($product_id) {
    foreach (WC()->cart->get_cart() as $cart_item) {
        if ($product_id == $cart_item['product_id']) {
            return true;
        }
    }
    return false;
}

Output

On individual product pages, customers will be provided with checkboxes displaying available complimentary gifts. Once the main product is added to the cart, customers can then select their preferred free products and proceed by clicking the ‘Order Free Products’ button.

If the customer tries to get access to these free products without adding the main product to the cart, then the notice message is displayed as shown below that will also restrict these products from being automatically added to the cart.

When the customer adds the main product, subsequently followed by adding the free products, then the selected free products gets added to the cart as shown below.

It’s a well-known fact that the key to delighting customers lies in offering irresistible deals. By analyzing trends and customer behaviors, you can strategically implement various BOGO offers that resonate with your audience. Additionally, consider applying bulk quantity discounts like ‘Buy 10 Get 1 Free’ in WooCommerce to further enhance customer satisfaction and boost sales.