This does not allow you to override the username or email of the user during registration. The values are solely used for validation and error handling.
Parameters
$resultarray
{ The array of user name, email, and the error messages. @type string $user_name Sanitized and unique username. @type string $orig_username Original username. @type string $user_email User email address. @type WP_Error $errors WP_Error object containing any errors found.}
596* @type string$user_name Sanitized and unique username.597* @type string$orig_username Original username.598* @type string$user_email User email address.599* @type WP_Error$errors WP_Error object containing any errors found.600*}601*/602returnapply_filters('wpmu_validate_user_signup',$result);603}604605/**606* Processes newsite registrations.607*608* Checks the data provided by the user during blog signup. Verifies
History
Introduced in MU (3.0.0). Unchanged from 6.7.7 through 7.1.0.