In CakePHP, cookies are used to store small pieces of data on the client side that can be read back later. Here are some basic steps for managing cookies in CakePHP:

1. Create a cookie: To create a cookie in CakePHP, you can use the Cake\Http\Cookie\Cookie class. This class allows you to specify the name, value, and expiration time of the cookie. Here’s an example of how to create a cookie:

$cookie = new \Cake\Http\Cookie\Cookie(
    'name',  // Name of the cookie
    'value', // Value of the cookie
    '1 day'  // Expiration time of the cookie
);

2. Send a cookie to the client: To send the cookie to the client, you can use the Cake\Http\Response class. The withCookie() method of this class allows you to attach a cookie object to the response object, which will be sent to the client when the response is sent. Here’s an example of how to send a cookie to the client:

$this->response = $this->response->withCookie($cookie);

3. Read a cookie from the client: To read a cookie from the client, you can use the Cake\Http\ServerRequest class. The getCookie() method of this class allows you to read a cookie by its name. Here’s an example of how to read a cookie:

$value = $this->request->getCookie('name');

4. Delete a cookie: To delete a cookie, you can create a new cookie with the same name and an expiration time in the past. This will overwrite the existing cookie and cause it to be deleted when the client’s browser expires it.