It's not possible to check for "meta_value = 0" in wp_query->get_posts

[hetjens]

Because of the "empty" function of php it isn't possible to check for a meta_value = 0 in wp_query->get_posts.

My Case:
...
'meta_key' => '_menu_item_menu_item_parent',
'meta_value' => '0',
...

wp-includes/query.php Line 2307 is:
if ( ! empty($qmeta_value?) ) {

But empty says that String "0" is true (look here: ​http://ch2.php.net/empty )

So the query will return all posts that have a meta-field "_menu_item_menu_item_parent" and not only the posts with "_menu_item_menu_item_parent = 0" (which means, that it's an menu root item)

My solution is:

if (( ! empty($qmeta_value?) )

($qmeta_value? == '0')) {

but that's not very nice. Any better idea?

Thanks,
Philip