Set up global user vars.
count_users
Count number of users who have each of the user roles.
update_user_meta
Update user meta field based on user ID.
get_user_meta
Retrieve user meta field for a user.
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delete_user_meta
Remove metadata matching criteria from a user.
add_user_meta
Adds meta data to a user.
is_user_member_of_blog
Find out whether a user is a member of a given blog.
get_blogs_of_user
Get the sites a user belongs to.
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get_users
Retrieve list of users matching criteria.
delete_user_option
Delete user option with global blog capability.
update_user_option
Update user option with global blog capability.
get_user_option
Retrieve user option that can be either per Site or per Network.
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get_current_user_id
Get the current user’s ID
count_many_users_posts
Number of posts written by a list of users.
count_user_posts
Number of posts user has written.
