This blog is going to explain "How to apply multiple layout in CakePHP".
By default layout file located in (app/View/Layouts/default.ctp) in CakePHP. if we don't apply any layout, then all pages will take default layout.
if we are required to add multiple layouts for different pages then we can do this as,

1. Go to /app/views/layouts/ & create firstlayout.ctp
2. Go to /app/views/layouts/ & create secondlayout.ctp
Here, firstlayout.ctp & secondlayout.ctp are new file in layout folder where you will add html & CSS code so that pages get new look & feel.

Change the default layout in all web pages

    var $layout = 'mylayout'; //This will apply to our all pages.

Different layout in index, view & display for e.g.

    function index() {
      $this->layout='firstlayout';          path: /app/views/layouts/firstlayout.ctp
    }
    function view() {
        $this->layout = 'secondlayout';     path: /app/views/layouts/secondlayout.cpt
    }
    function display() {
        // display page will take mylayout.
    }

Note: If we don’t want any layout for any action, then we can use controller property $layout = null.

     class UserController extends AppController {
        public $layout = null; // For all actions
        public function index(){
           $this->layout = null; // For particular action
        }
    }