Code-Snippets-Functions/Execute a function on a child site/WooCommerce/disable-specific-shipping-method-only-when-a-specific-product-in-cart.txt

add_filter( 'woocommerce_package_rates', 'custom_hide_shipping_for_shipping_class', 900, 2 );
function custom_hide_shipping_for_shipping_class( $rates, $package ) {
    $targeted_shipping_class  = 569; // shipping class ID
    $targeted_shipping_method = 'free_shipping:8'; // shipping method rate ID

    $found = false;

    foreach ( $package['contents'] as $item ) {
        if ( $item['data']->get_shipping_class_id() == $targeted_shipping_class ) {
            $found = true;
        } else {
            return $rates;
        }
    }
    if ( $found && isset($rates[$targeted_shipping_method]) ) {
        unset($rates[$targeted_shipping_method]);
    }
    return $rates;
}