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 $errors WP_Error object containing any errors found.}
595* @type string$user_name Sanitized and unique username.596* @type string$orig_username Original username.597* @type string$user_email User email address.598* @type WP_Error$errors WP_Error object containing any errors found.599*}600*/601returnapply_filters('wpmu_validate_user_signup',$result);602}603604/**605* Processes newsite registrations.606*607* 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.