Help me become a better developer!

[eluser]RaZoR LeGaCy[/eluser]
How does this measure up??

Code:

if ( !$this->uri->segment(3) || !ctype_digit($this->uri->segment(3)) ){

redirect('movies/');

} else {

$this->load->helper('text');

#$this->output->cache(0);
#$this->output->enable_profiler(TRUE);

#Queries

$this->db->where('rid', $this->uri->segment(3));
$data['reviews'] = $this->db->get('hellhorror_reviews');

}