WooCommerce Free Virtual Items Checkout

woocommerce-free-items-checkout.php

<?php
/**
 * Plugin Name: WooCommerce Free Virtual Items Checkout
 * Description: Hides most of the checkout fields for orders with only free virtual items. Vistors are more likely to download a free item if an address and phone is not required.
 * Version: 1.0
 * Author: Doug Smith
 * Author URI: http://smithsrus.com/
 */

defined('WPINC') or die; // Exit if accessed directly


add_filter( 'woocommerce_checkout_fields' , 'sru_limit_checkout_fields' );

/**
 * Remove checkout fields for free, virtual item orders.
 *
 * @return $fields array
 */
function sru_limit_checkout_fields( $fields ) {
	global $woocommerce;

	if( ! $woocommerce->cart->needs_shipping() && 0 == $woocommerce->cart->get_cart_total() ) {
		unset($fields['billing']['billing_company']);
		unset($fields['billing']['billing_address_1']);
		unset($fields['billing']['billing_address_2']);
		unset($fields['billing']['billing_city']);
		unset($fields['billing']['billing_postcode']);
		unset($fields['billing']['billing_country']);
		unset($fields['billing']['billing_state']);
		unset($fields['billing']['billing_phone']);
		unset($fields['order']['order_comments']);
	}

	return $fields;
}

I recommend also including the following to hide the Additional Information header: add_filter('woocommerce_enable_order_notes_field', '__return_false');