how to use the PHP session variable in zend framework

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I want to know how to use PHP session variable in zend framework

here is my code so far :-

 public function loginAction()
    {
        $this->view->title = 'Login';
        if(Zend_Auth::getInstance()->hasIdentity()){
            $this->_redirect('index/index');
        }

            $request = $this->getRequest();
            $form = new Default_Form_LoginForm();
            if($request->isPost()){
            if($form->isValid($this->_request->getPost())){
                $authAdapter = $this->getAuthAdapter();

                $username = $form->getValue('username');
                $password = $form->getValue('password');

                $authAdapter->setIdentity($username)
                            ->setCredential($password);

                $auth = Zend_Auth::getInstance();
                $result = $auth->authenticate($authAdapter);

                if($result->isValid()){
                    $identity = $authAdapter->getResultRowObject();

        print_r($authAdapter->getResultRowObject());

                    $authStorage = $auth->getStorage();
                    $authStorage->write($identity);

        echo $authAdapter->getIdentity() . "\n\n";

           //         $this->_redirect('index/index');
                } else {
                    $this->view->errorMessage = "User name or password is wrong.";
                }
            }
        }

        $this->view->form = $form;

     }

now i want to store username in session and i want to use in some other page like

echo "welcome," .$this->username; what i can do ?


Instead of writing $identity to $authStorage, you can store a custom object or a model.

Here is an example:

<?php

class      Application_Model_UserSession
implements Zend_Acl_Role_Interface
{
    public $userId;
    public $username;

    /** @var array */
    protected $_data;

    public function __construct($userId, $username)
    {
        $this->userId   = $userId;
        $this->username = $username;
    }

    public function __set($name, $value)
    {
        $this->_data[$name] = $value;
    }

    public function __get($name)
    {
        if (array_key_exists($name, $this->_data)) {
            return $this->_data[$name];
        } else {
            return null;
        }
    }

    public function updateStorage()
    {
        $auth = Zend_Auth::getInstance();
        $auth->getStorage()->write($this);
    }

    public function getRoleId()
    {
        // TODO: implement
        $role = 'guest';
        return $role;
    }

    public function __isset($name)
    {
        return isset($this->_data[$name]);
    }

    public function __unset($name)
    {
        unset($this->_data[$name]);
    }
}

Now in your login controller you can do:

if($result->isValid()){
    $identity = new Application_Model_UserSession(0, $username); // 0 for userid

    // You can also store other data in the session, e.g.:
    $identity->account = new Account_Model($authAdapter->getResultRowObject());

    $identity->updateStorage(); // update Zend_Auth identity with the UserSession object

Typically, I have an account object that I also store in the UserSession object, and make easy access to the username and userId via public properties.

Now at any time you can get the object:

$identity = Zend_Auth::getInstance()->getIdentity(); // Application_Model_UserSession

Just don't forget to make sure it is a Application_Model_UserSession.