Stop controller at this point, run other method

In some cases, switch is a better alternative:

PHP Code:

$check = $this->Logier->check_address($url);
switch ($check) {
 case 1 : 
    $this->show_page($url);
    break;
 case 2 :
    $this->show_post($url);
    break;
 default:
    show_404();
    die();
}