For storing new user information in database, first we have to  create a new table in database which contain user name,email,password fields.

The logic of the controller is written below. In below code we have create a function registration ,so we have to create a view with similar name with .ctp extension. View will contain our registration form which will send  user information to the controller by using POST method.

<?php 
App::uses('Controller','Controller');

class UsersController extends AppController 
{     
        function registration(){

         
        if ($this->request->is('post')) { // checking form data is send by using post 
           
            $this->User->create(); //  function will save the data  of the user in the database 
           
            if ($this->User->save($this->request->data)) {
                $this->Session->setFlash(__('The user has been created'));
                $this->redirect(array('action' => 'login'));
            } else {
                $this->Session->setFlash(__('The user could not be created. Please, try again.'));
            }   
        }
    }