How to get a count of groups that user has joined?

Question

I have used OG module to implement the Groups functionality. I want to get:

1. Count of all groups that are there on the website
2. Count of groups that a user has joined

How can I do this?

Note: My preference would be to use an existing function (if there is any).

Answer 1

To get Count of all groups....

$groups = og_get_all_group($group_type = 'node');
$count = count($groups);

To get User Groups Count

$user_groups = og_get_groups_by_user();
$user_count = count($user_groups);