$_GET values

[eluser]Developer13[/eluser]
Why not just use CodeIgniter's native conventions and do it like this:

/controller/view/TB_iframe/true/height/400/width/800/pfid/1

$uri = $this->uri->uri_to_assoc(3);

Then your controller will have access to the following variables:

$uri['tb_iframe']
$uri['height']
$uri['width']
$uri['pfid']

There are reasons why $_GET variables are by default disabled in CI.