[wp-hackers] Role settings using WP_User class

[Francesco Terenzani]

Hi wp-hackers,

I'm going to make a plugin that have to adds some users.

I have a function that look like this:

function add_user($id){
  $user = new WP_User($id);
  $user->set_role(get_option('default_role'));
}

but this function return the fatal error:

Call to undefined function: get_userdata() in
mypath\wp\wp-includes\functions.php on line 2259

evreyone know what is the problem?

thanks,
Fra