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WooCommerce - enable free shipping only if product class is found in cart.
<?php // Do not include this if already open!
* Code goes in theme functions.php. Free Shipping Method must be enabled.
add_filter( 'woocommerce_shipping_free_shipping_is_available', 'free_shipping_based_on_cart_shipping_class' );
function free_shipping_based_on_cart_shipping_class( $is_available ) {
* This example enables free shipping only when an item is found in the cart with a class named 'free_shipping'
$cart_items = WC()->cart->get_cart();
$found = false;
foreach ( $cart_items as $cart_item ) {
$product = $cart_item['data'];
$class = $product->get_shipping_class();
if ( 'free_shipping' === $class ) {
$found = true;
return $is_available && $found;
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ghost commented Apr 12, 2017

Hello, I've added the code into my functions.php file and it is not working.

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