wp_insert_user()
Function: Inserts a user into the database.
Source: wp-includes/user.php:2096
wp_update_user()
Function: Updates a user in the database.
Source: wp-includes/user.php:2537
update_user_meta()
Function: Updates user meta field based on user ID.
Source: wp-includes/user.php:1215
count_users()
Function: Counts number of users who have each of the user roles.
Source: wp-includes/user.php:1243
update_user_option()
Function: Updates user option with global blog capability.
Source: wp-includes/user.php:742
delete_user_option()
Function: Deletes user option with global blog capability.
Source: wp-includes/user.php:769
get_users()
Function: Retrieves list of users matching criteria.
Source: wp-includes/user.php:790
get_blogs_of_user()
Function: Gets the sites a user belongs to.
Source: wp-includes/user.php:950
is_user_member_of_blog()
Function: Finds out whether a user is a member of a given blog.
Source: wp-includes/user.php:1078
add_user_meta()
Function: Adds meta data to a user.
Source: wp-includes/user.php:1145