add_user_role action-hook . WP 4.3.0

Fires immediately after the user has been given a new role.

Usage

add_action( 'add_user_role', 'action_function_name_819', 10, 2 );
function action_function_name_819( $user_id, $role ){
	// action...
}

$user_id(int)

The user ID.

$role(string)

The new role.

Where the hook is called

do_action( 'add_user_role', $this->ID, $role );

Where the hook is used (in WP core)