maybe_add_existing_user_to_blog()
Function: Adds a new user to a blog by visiting /newbloguser/{key}/.
Source: wp-includes/ms-functions.php:2166
add_existing_user_to_blog()
Function: Adds a user to a blog based on details from maybe_add_existing_user_to_blog().
Source: wp-includes/ms-functions.php:2219
added_existing_user
Action Hook: Fires immediately after an existing user is added to a site.
Source: wp-includes/ms-functions.php:2233
add_new_user_to_blog()
Function: Adds a newly created user to the appropriate blog
Source: wp-includes/ms-functions.php:2253
fix_phpmailer_messageid()
Function: Corrects From host on outgoing mail to match the site domain.
Source: wp-includes/ms-functions.php:2274
is_user_spammy()
Function: Determines whether a user is marked as a spammer, based on user login.
Source: wp-includes/ms-functions.php:2287
update_blog_public()
Function: Updates this blog’s ‘public’ setting in the global blogs table.
Source: wp-includes/ms-functions.php:2309
users_can_register_signup_filter()
Function: Determines whether users can self-register, based on Network settings.
Source: wp-includes/ms-functions.php:2320
update_posts_count()
Function: Updates a blog’s post count.
Source: wp-includes/ms-functions.php:2016
wpmu_log_new_registrations()
Function: Logs the user email, IP, and registration date of a new site.
Source: wp-includes/ms-functions.php:2032