not in in codeigniter code example

Example 1: not where in codeigniter

$ignore = array(12, 13);

$this->db->where_not_in('crm.user_id', $ignore);

Example 2: codeigniter where_not_in

$names = array('Frank', 'Todd', 'James');
$this->db->where_not_in('username', $names);
// Produces: WHERE username NOT IN ('Frank', 'Todd', 'James')