<?
foreach ($selected_user_ids as $user_id) {
	$password = random_string('alnum', 12);
	$return = $this->users->get_users($user_id);
	print_r($return);
	$user_first_name = $return->user_first_name;
	$username = $return->username;
	$user_email = $return->user_email;
}

When $selected_user_ids is an Array ( [0] => 67 ), the script works just fine.

When $selected_user_ids is an Array ( [0] => 66 [1] => 67 ) I get the following error:

Message: Trying to get property of non-object
Line Number: 6
Message: Trying to get property of non-object
Line Number: 7
Message: Trying to get property of non-object
Line Number: 8

// I both cases $return will be something along this pattern:
// stdClass Object ( [user_id] => 66 [username] => test_benutzer_3 [joined] => 2010-02-27 04:34:59 [updated] => 2010-02-27 04:36:12 [user_permission_id] => 1 [user_title] => Herr [user_first_name] => Name [user_last_name] => Street [user_street] => City [user_city] => Wiesbaden [user_country] => Deutschland [user_postcode] => 0000 [user_phone] => +0000 [user_email] => info@email.com )
// , yet if $selected_user_ids is an Array ( [0] => 66 [1] => 67 ) $return has an -1 added to it

// Where does the -1 come from? It is the same call in both cases…
?>