How to use $this->session->set_userdata in codeigniter

php codeigniter session continuous-integration

PHP Snippet 1:

$this->load->library('session');

PHP Snippet 2:

$this->session->set_userdata($data);

PHP Snippet 3:

$data = array(
  'email'           => $row->email,
  'level_id'        => $row->level_id,
  'id_subunit'      => $row->id_subunit
);