Modify Free Shipping Threshold in WooCommerce Easily

Code

<?php
// Hook into WooCommerce to modify the free shipping threshold
add_filter('woocommerce_package_rates', 'wp_dudecom_modify_free_shipping_threshold', 10, 2);

/**
 * Modify the free shipping threshold in WooCommerce.
 *
 * @param array $rates Array of available shipping rates.
 * @param array $package The package array containing cart details.
 * @return array Modified array of shipping rates.
 */
function wp_dudecom_modify_free_shipping_threshold($rates, $package) {
    // Define the new free shipping threshold amount
    $new_threshold = 100; // Set your desired threshold amount here

    // Loop through each shipping rate
    foreach ($rates as $rate_id => $rate) {
        // Check if the rate is free shipping
        if ('free_shipping' === $rate->method_id) {
            // Get the cart total
            $cart_total = WC()->cart->get_displayed_subtotal();

            // Check if the cart total meets the new threshold
            if ($cart_total < $new_threshold) {
                // Remove free shipping if the cart total is below the threshold
                unset($rates[$rate_id]);
            }
        }
    }

    return $rates;
}

// Hook to exclude specific products from free shipping
add_filter('woocommerce_cart_shipping_packages', 'wp_dudecom_exclude_product_from_free_shipping');

/**
 * Exclude specific products from free shipping.
 *
 * @param array $packages Array of shipping packages.
 * @return array Modified array of shipping packages.
 */
function wp_dudecom_exclude_product_from_free_shipping($packages) {
    // Define product IDs to exclude from free shipping
    $excluded_product_ids = array(123, 456); // Replace with your product IDs

    foreach ($packages as &$package) {
        foreach ($package['contents'] as $key => $item) {
            // Check if the product is in the excluded list
            if (in_array($item['product_id'], $excluded_product_ids)) {
                // Set the shipping class to a non-free shipping class
                $package['contents'][$key]['data']->set_shipping_class_id(0); // Replace 0 with the ID of a non-free shipping class
            }
        }
    }

    return $packages;
}
?>