How to display corpname first, if no corpname, then username?

In the Controller I have had the first line below, which should answer @demyr question.

And I have now inserted the 2nd line below it, and have the coding of @InsiteFX in the view page, and now everything works fine.

PHP Code:

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