cakePHP have by default FlashComponent which provides  notification messages to be displayed in the website or application after processing a form .

FlashComponent in cakePHP writes flash messages  to be rendered in a ctp file in view folder .

Setting Flash Messages

FlashComponent provides two ways to set flash messages: its call magic method and its set() method.

We use the set() method to use  flash message handler.

the syntax for showing the flash messages is- >

$this->Flash->set('This is a message');

We can create our custom Flash elements too. , FlashComponent call magic method allows you use a method name that maps to an element located under the app/View/Elements/Flash directory.

// Uses app/View/Elements/Flash/one.ctp
$this->Flash->one('This was good');

// Uses app/View/Elements/Flash/two.ctp
$this->Flash->two('This was very good');