email_exists()
Function: Determines whether the given email exists.
Source: wp-includes/user.php:1986
user_register
Action Hook: Fires immediately after a new user is registered.
Source: wp-includes/user.php:2515
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
pre_get_blogs_of_user
Filter Hook: Filters the list of a user’s sites before it is populated.
Source: wp-includes/user.php:973
get_blogs_of_user
Filter Hook: Filters the list of sites a user belongs to.
Source: wp-includes/user.php:1064