WooCommerce shipping cost based on cart item count

Question

I want to count shipping cost based on number of products add on cart like,

If I purchase one mobile then it will count shipping cost as 2.5 and after more than two or t

Answer 1

Go ahead with Woocommerce filter woocommerce_package_rates. Where you can customize all the shipping rates available in cart page.

Here is the code for adding extra cost to all items for both domestic and international shipement

add_filter('woocommerce_package_rates', 'wf_modify_rate', 10, 3);
function wf_modify_rate( $available_shipping_methods, $package ){
    $origin_country = 'US';
    $amount_to_add_domestic = 10;
    $amount_to_add_inter_national = 20;

    $amount_to_add = ($package['destination']['country'] == $origin_country) ? 
    $amount_to_add_domestic : $amount_to_add_inter_national;

    $item_count = 0;
    foreach ($package['contents'] as $key => $item) {
        $item_count += $item['quantity'];
    }

    foreach ($available_shipping_methods as $methord_name => $methord) {
        $available_shipping_methods[$methord_name]->cost += ($amount_to_add*$item_count);
    }
    return $available_shipping_methods;
}