PHP教程：Zend Framework创建自己的动作助手详解

<?php
/**
 * @see Zend_Controller_Action
 */
require_once 'Zend/Controller/Action.php';
abstract class Zend_Controller_Action_Helper_Abstract
{
  /**
   * $_actionController
   *
   * @var Zend_Controller_Action $_actionController
   */
  protected $_actionController = null;
  /**
   * @var mixed $_frontController
   */
  protected $_frontController = null;
  /**
   * setActionController()
   *
   * @param Zend_Controller_Action $actionController
   * @return Zend_Controller_ActionHelper_Abstract Provides a fluent interface
   */
  public function setActionController(Zend_Controller_Action $actionController = null)
  {
    $this->_actionController = $actionController;
    return $this;
  }
  /**
   * Retrieve current action controller
   *
   * @return Zend_Controller_Action
   */
  public function getActionController()
  {
    return $this->_actionController;
  }
  /**
   * Retrieve front controller instance
   *
   * @return Zend_Controller_Front
   */
  public function getFrontController()
  {
    return Zend_Controller_Front::getInstance();
  }
  /**
   * Hook into action controller initialization
   *
   * @return void
   */
  public function init()
  {
  }
  /**
   * Hook into action controller preDispatch() workflow
   *
   * @return void
   */
  public function preDispatch()
  {
  }
  /**
   * Hook into action controller postDispatch() workflow
   *
   * @return void
   */
  public function postDispatch()
  {
  }
  /**
   * getRequest() -
   *
   * @return Zend_Controller_Request_Abstract $request
   */
  public function getRequest()
  {
    $controller = $this->getActionController();
    if (null === $controller) {
      $controller = $this->getFrontController();
    }
    return $controller->getRequest();
  }
  /**
   * getResponse() -
   *
   * @return Zend_Controller_Response_Abstract $response
   */
  public function getResponse()
  {
    $controller = $this->getActionController();
    if (null === $controller) {
      $controller = $this->getFrontController();
    }
    return $controller->getResponse();
  }
  /**
   * getName()
   *
   * @return string
   */
  public function getName()
  {
    $fullClassName = get_class($this);
    if (strpos($fullClassName, '_') !== false) {
      $helperName = strrchr($fullClassName, '_');
      return ltrim($helperName, '_');
    } elseif (strpos($fullClassName, '\\') !== false) {
      $helperName = strrchr($fullClassName, '\\');
      return ltrim($helperName, '\\');
    } else {
      return $fullClassName;
    }
  }
}

<?php
require_once 'Zend/Controller/Action/Helper/Abstract.php';
class Application_Controller_Action_Helpers_UrlParser extends Zend_Controller_Action_Helper_Abstract
{
  public function __construct()
  {
  }
  /**
   * Parse url
   *
   * @param String $url
   * @return Array part of url
   */
  public function parse($url)
  {
    return parse_url($url);
  }
}

<?php
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap
{
  protected function _initAutoload()
  {
    $autoloader = Zend_Loader_Autoloader::getInstance();
    $autoloader->registerNamespace(array('Application_'));
  }
  protected function _initActionHelpers() {
    //用前缀形式
    //Zend_Controller_Action_HelperBroker::addPrefix('Application_Controller_Action_Helpers');
    //指定目录和前缀
    //Zend_Controller_Action_HelperBroker::addPath('/www/helper_demo1/library/Application/Controller/Action/Helpers',
    //                  'Application_Controller_Action_Helpers');
    //new一个助手类传入
    Zend_Controller_Action_HelperBroker::addHelper(new Application_Controller_Action_Helpers_UrlParser);
  }
}

<?php
class IndexController extends Zend_Controller_Action
{
  public function init()
  {
    /* Initialize action controller here */
  }
  public function indexAction()
  {
    $urlParser = $this->_helper->getHelper('UrlParser');
  var_dump($urlParser->parse(''));
  }
}