get_instance() in Codeigniter: Why assign it to a variable?

Question

In Codeigniter, get_instance() is a globally available function that returns the Controller super-object which contains all the currently loaded classes (it ret

Answer 1

I prefer uses this way, it's simple

class Test
{
    //magic method __get, whit this can use $this->load
    //instead create a variable ci, then do $this->ci->load, cool :)

    public function __get($var)
    {
        return get_instance()->$var;
    }

    public function showUrl()
    {
        $this->load->helper("url");
        echo base_url();
    }
}