Session component provides a way to persist the data between HTTP requests. We can put any value to name and by this way we can write the session.

SessionComponent::write($name, $value)

$this->Session->write('User.fruit, 'apple');

Which writes the value apple to the name fruit under user.Means User=>fruit

    SessionComponent::read($name)

$var = $this->Session->read('User.fruit');

We can read the session with the help of session component read function which has one parameter. it returns the value $name in the session.

    SessionComponent::delete($name)

$this->Session->delete('User.fruit');

It clear the session data

  SessionComponent::destroy()

   $this->Session->destroy();

It will delete the all session data.we can destroy the php session and create a fresh session.