functions.php add widget explanation

Gentlemen,

in your functions.php you give advice on how to add more widget-area’s, like this:
===

/*
to add more sidebars or widgetized areas, just copy
and edit the above sidebar code. In order to call
your new sidebar just use the following code:

Just change the name to whatever your new
sidebar’s id is, for example:

register_sidebar(array(
‘id’ => ‘sidebar2’,
‘name’ => __( ‘Sidebar 2’, GEODIRECTORY_FRAMEWORK ),
‘description’ => __( ‘The second (secondary) sidebar.’, GEODIRECTORY_FRAMEWORK ),
‘before_widget’ => $before_widget,
‘after_widget’ => $after_widget,
‘before_title’ => $before_title ,
‘after_title’ => $after_title,
));

To call the sidebar in your template, you can just copy
the sidebar.php file and rename it to your sidebar’s name.
So using the above example, it would be:
sidebar-sidebar2.php
===

I think I found a minor mistake in it, because if i follow this our whole site turns white.

After adding this line everything worked fine again:
if(!empty($gdf) && !$gdf[‘sidebar2’]){

Does this make sense to you?