Function: Sends a confirmation request email to a user when they sign up for a new user account (without signing up for a site at the same time). The user account will not become active until the confirmation link is clicked.
Source: wp-includes/ms-functions.php:1056
Function: Activates a signup.
Source: wp-includes/ms-functions.php:1158
Function: Creates a user.
Source: wp-includes/ms-functions.php:1310
Function: Creates a site.
Source: wp-includes/ms-functions.php:1361
Function: Notifies the network admin that a new site has been activated.
Source: wp-includes/ms-functions.php:1421
Function: Sanitizes and validates data required for a user sign-up.
Source: wp-includes/ms-functions.php:455
Function: Processes new site registrations.
Source: wp-includes/ms-functions.php:621
Function: Records site signup information for future activation.
Source: wp-includes/ms-functions.php:781
Function: Records user signup information for future activation.
Source: wp-includes/ms-functions.php:847
Class: Core class used to implement a user roles API.
Source: wp-includes/class-wp-roles.php:27