$tables = $this->db->list_tables();
  $object = array(
      'kyo_id' =>'2013' ,
      'student_id' =>'2013022194' ,
      'class_id' =>'1' ,
      'ban_id' =>'3'
      

     );




  foreach ($tables as $table)
  {

     if (!$this->db->field_exists($object, $table)){
                    $this->db->insert($table,$object);

                  }
                 }