php - Initializing Codeigniter Utilities inside contstructor on Custom Class -

i have been doing ci few months , got point wanted create own library class on ci. now, problem can't seem instance of ci in order me utilize native resources. i've done this.

class myclass{      protected $instance;      public function __construct()      {         $this->$instance = &get_instance(); <-- did (theoretically speaking)       }   } 

other things i've tried

class myclass{       protected $instance = &get_instance(); <-- reports syntax error on apatana       public function __construct()      {        }   } 

anyone of out there can give me better idea on how instance (initializing 1 point on source code) <-- being said that, wanted instance once , use on over class

you can use in way in constructor $this->ci = & get_instance();  can use  $this->ci->load->model();