WooCommerce: Action to limit User Role to a number items per Order

gistfile1.txt

// Add an action on cart evaluation
add_action( 'woocommerce_check_cart_items', 'limit_cart_items_for_specific_role' );
function limit_cart_items_for_specific_role() {
    // The user role to check against
    $user_role_to_check = 'subscriber';

    // The item limit
    $item_limit = 3;

    // Get the current user
    $current_user = wp_get_current_user();

    // If the current user has the role to check and the number of items in the cart exceeds the limit
    if ( in_array( $user_role_to_check, $current_user->roles ) && WC()->cart->get_cart_contents_count() > $item_limit ) {
        // Display an error message and prevent checkout
        wc_add_notice( sprintf( __( 'As a %s, you are limited to %s items per order.', 'woocommerce' ), $user_role_to_check, $item_limit ), 'error' );
    }
}