The current method definition:

    /**
     * Validate HTTP status redirect code
     *
     * @param  int $code
     * @throws Zend_Controller_Action_Exception on invalid HTTP status code
     * @return true
     */
    protected function _checkCode($code)
    {
        $code = (int)$code;
        if ((300 > $code) || (307 < $code)) {
            /**
             * @see Zend_Controller_Exception
             */
            require_once 'Zend/Controller/Exception.php';
            throw new Zend_Controller_Action_Exception('Invalid redirect HTTP status code (' . $code  . ')');
        }

        return true;
    }

Propose 1: Change the method to accept string, a HTTP code is not an integer, string is the correct type to use. Propose 2: Be more correct about the accepted codes: Currently the method accepts invalid redirect codes.

From the HTTP/1.1 RFC (http://w3.org/Protocols/rfc2616/…): - 307 Temporary Redirect - Valid - 306 (Unused) - Invalid - 305 Use Proxy - Valid - 304 Not Modified - Invalid (not a redirect) - 303 See Other - Valid - 302 Found - Valid - 301 Moved Permanently - Valid - 300 Multiple Choices - Valid

Improved class proposal:

    /**
     * HTTP status code for redirects
     * @var string
     */
    protected $_code = '302';

...

    /**
     * Validate HTTP status redirect code
     *
     * @param  string $code
     * @throws Zend_Controller_Action_Exception on invalid HTTP status code
     * @return true
     */
    protected function _checkCode($code)
    {
        $code = (string)$code;
        if (false === in_array($code, array('300', '301', '302', '303', '305', '307'))) {
            /**
             * @see Zend_Controller_Exception
             */
            require_once 'Zend/Controller/Exception.php';
            throw new Zend_Controller_Action_Exception('Invalid redirect HTTP status code (' . $code  . ')');
        }

        return true;
    }

    /**
     * Retrieve HTTP status code for {@link _redirect()} behaviour
     *
     * @param  string $code
     * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
     */
    public function setCode($code)
    {
        $this->_checkCode($code);
        $this->_code = $code;
        return $this;
    }