[Thanks All For Advice] Checking if isset is correct?

PHP Code:

<?php if (!empty($view['navbar'])) $this->load->view($view['navbar']); ?>

Will that not throw a warning if the key doesn't exist in the array though? Hence the use of isset?

Hence the use of element(). This will not throw an error, but you can decide yourself what value you want if the array key doesn't exist.