Add a third description on the Single Product Page

There are times when the “long description” and the “short description” are not enough on the WooCommerce Single Product page. What if you need to add another HTML content section – say – at the very bottom of the page?

In this simple snippet, we will add another “WYSIWYG” text editor in the Edit Product page, and display the output at the bottom of the single product page. Enjoy!

add_action( 'add_meta_boxes', 'bbloomer_new_meta_box_single_prod' );
 
function bbloomer_new_meta_box_single_prod() {
   add_meta_box(
      'custom_product_meta_box',
      'Product third description',
      'bbloomer_add_custom_content_meta_box',
      'product',
      'normal',
      'default'
   );
}
 
function bbloomer_add_custom_content_meta_box( $post ){
   $third_desc = get_post_meta( $post->ID, '_third_desc', true ) ? get_post_meta( $post->ID, '_third_desc', true ) : '';   
   wp_editor( $third_desc, '_third_desc' );
}
 
add_action( 'save_post_product', 'bbloomer_save_custom_content_meta_box', 10, 1 );
 
function bbloomer_save_custom_content_meta_box( $post_id ) {
   if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
   if ( ! isset( $_POST['_third_desc'] ) ) return;
   update_post_meta( $post_id, '_third_desc', $_POST['_third_desc'] );
}
 
add_action( 'woocommerce_after_single_product_summary' , 'bbloomer_third_desc_bottom_single_product', 99 );
   
function bbloomer_third_desc_bottom_single_product() {
   global $product;
   $third_desc = get_post_meta( $product->get_id(), '_third_desc', true ) ? get_post_meta( $product->get_id(), '_third_desc', true ) : '';
   if ( ! $third_desc ) return;
   echo '<div>';
   echo $third_desc;
   echo '</div>';
}