If you have ever made any PHP Classes for your work. Then it’s pretty easy to add those classes inside your CakePHP driven application. You need to follow the below steps.

• Steps 1:
  You first have to place a class file inside a directory
• Steps 2:
  Then open App/Config/bootstrap.php from your CakePHP application directory and write the following codes.

//mydir is another directory placed outside of cakephp directory
App::build(array(
    'GlobalUsers' => array(dirname(CAKE_CORE_INCLUDE_PATH).DS.'mydir'.DS)
), App::REGISTER);

It will just add the location to your CakePHP apps.

• Now in your active working CakePHP directory just open AppController.php file and add your newly added class.

App::uses('UsersController','GlobalUsers');

In the above code here UsersController is your file name like UsersController.php

Now you can access your classes inside UsersController.php

Have coding with CakePHP.