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;

			break;

		}

	}

	return $is_available && $found;

}

view raw
functions.php
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WooCommerce – enable free shipping only if product class is found in cart.

Like this:

Published by Mike Jolley

	<?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;
	break;
	}
	}

	return $is_available && $found;
	}