Copy the order billing address to user profile when profile email is blank in WooCommerce on your child site.
Snippet Type
Execute on Child Sites
Snippet
add_action( 'woocommerce_checkout_order_processed', 'my_woocommerce_copy_billing_email_to_user_profile', 10, 3 );
/**
* Copy the order billing address to user profile when profile email is blank.
*
* Requires WooCommerce 3.0
*
* @param $order_id
* @param $posted_data
* @param \WC_Order $order
*/
function my_woocommerce_copy_billing_email_to_user_profile( $order_id, $posted_data, $order ){
$user = $order->get_user();
if ( ! $user || $user->user_email ) {
return;
}
$user->user_email = $order->get_billing_email();
wp_update_user( $user );
}