http://zend-framework-community.634137.n4.nabble.com/Zend-Auth-session-expired-fatal-error-tp2225703p2286085.html

gistfile1.php

<?php


class RS_Auth_Adapter implements Zend_Auth_Adapter_Interface
{
    const NOT_FOUND_MSG = 'Account not found';
    const BAD_PW_MSG    = 'Password in invalid';
    
    
    protected $user     = null;
    protected $username = '';
    protected $password = '';
    
    
    public function __construct($username, $password)
    {
        $this->username = $username;
        $this->password = $password;
    }
    
    
    public function authenticate()
    {
        try {
            $this->user = Model_User::authenticate($this->username, $this->password);
            return $this->createResult(Zend_Auth_Result::SUCCESS);
        } catch(Exception $e) {
            if (Model_User::WRONG_PW == $e->getMessage()) {
                $code = Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID;
                $msgs = array(self::BAD_PW_MSG);
            } elseif (Model_User::NOT_FOUND == $e->getMessage()) {
                $code = Zend_Auth_Result::FAILURE_IDENTITY_NOT_FOUND;
                $msgs = array(self::NOT_FOUND_MSG);
            } else {
                $code = Zend_Auth_Result::FAILURE;
                $msgs = array();
            }
            
            return $this->createResult($code, $messages);
        }
    }
    
    private function createResult($code, $messages = array())
    {
        return new Zend_Auth_Result($code, $this->user, $messages);
    }
}