Result.php

<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 * @package   Zend_Authentication
 */

namespace Zend\Authentication;

/**
 * @category   Zend
 * @package    Zend_Authentication
 */
class Result
{
    /**
     * General Failure
     */
    const FAILURE                        =  0;

    /**
     * Failure due to identity not being found.
     */
    const FAILURE_IDENTITY_NOT_FOUND     = -1;

    /**
     * Failure due to identity being ambiguous.
     */
    const FAILURE_IDENTITY_AMBIGUOUS     = -2;

    /**
     * Failure due to invalid credential being supplied.
     */
    const FAILURE_CREDENTIAL_INVALID     = -3;

    /**
     * Failure due to uncategorized reasons.
     */
    const FAILURE_UNCATEGORIZED          = -4;

    /**
     * Authentication success.
     */
    const SUCCESS                        =  1;

    /**
     * Authentication result code
     *
     * @var int
     */
    protected $code;

    /**
     * The identity used in the authentication attempt
     *
     * @var mixed
     */
    protected $identity;

    /**
     * An array of string reasons why the authentication attempt was unsuccessful
     *
     * If authentication was successful, this should be an empty array.
     *
     * @var array
     */
    protected $messages;

    /**
     * Sets the result code, identity, and failure messages
     *
     * @param  int     $code
     * @param  mixed   $identity
     * @param  array   $messages
     */
    public function __construct($code, $identity, array $messages = array())
    {
        $code = (int) $code;

        if ($code < self::FAILURE_UNCATEGORIZED) {
            $code = self::FAILURE;
        } elseif ($code > self::SUCCESS ) {
            $code = 1;
        }

        $this->code     = $code;
        $this->identity = $identity;
        $this->messages = $messages;
    }

    /**
     * Returns whether the result represents a successful authentication attempt
     *
     * @return bool
     */
    public function isValid()
    {
        return ($this->code > 0) ? true : false;
    }

    /**
     * getCode() - Get the result code for this authentication attempt
     *
     * @return int
     */
    public function getCode()
    {
        return $this->code;
    }

    /**
     * Returns the identity used in the authentication attempt
     *
     * @return mixed
     */
    public function getIdentity()
    {
        return $this->identity;
    }

    /**
     * Returns an array of string reasons why the authentication attempt was unsuccessful
     *
     * If authentication was successful, this method returns an empty array.
     *
     * @return array
     */
    public function getMessages()
    {
        return $this->messages;
    }
}