WordPress at a glance
action is not described

wpmu_activate_user action-hook . WP MU

Fires immediately after a new user is activated.

Usage

add_action( 'wpmu_activate_user', 'action_function_name_4290', 10, 3 );
function action_function_name_4290( $user_id, $password, $meta ){
	// action...
}
$user_id(int)
User ID.
$password(int)
User password.
$meta(array)
Signup meta data.

Notes

  • Since MU (3.0.0)

Where the hook is called

wpmu_activate_signup()
wp-includes/ms-functions.php 1087
do_action( 'wpmu_activate_user', $user_id, $password, $meta );

Where the hook is used (in WP core)

wp-includes/ms-default-filters.php 27
add_action( 'wpmu_activate_user', 'add_new_user_to_blog', 10, 3 );
wp-includes/ms-default-filters.php 28
add_action( 'wpmu_activate_user', 'wpmu_welcome_user_notification', 10, 3 );