Zend_View Helper视图助手使用说明

Bootstrap.php:
------------------
protected function _initView()
{
    $view = new Zend_View();
    $view->doctype('XHTML1_STRICT');
    $view->headTitle('My First Zend Framework Application');
    $view->addScriptPath(APPLICATION_PATH.'/modules/admin/views/scripts');
    $view->addScriptPath(APPLICATION_PATH.'/modules/blog/views/scripts');
    $viewRenderer = Zend_Controller_Action_HelperBroker::getStaticHelper(
        'ViewRenderer'
    );
    $viewRenderer->setView($view);
    //添加视图助手路径
    $view->addHelperPath('../library/Won/View/Helper/', 'Won_View_Helper');

    Zend_Registry::set('view', $view);
    return $view;
}
==================================================
视图助手类:/library/Won/View/Helper/Img.php
----------------
/**
  * View Helper:图片助手
 **/
class Won_View_Helper_Img extends Zend_View_Helper_Abstract
{
    public function img($src, $width, $height, $alt = '', $options = array())
    {
        if (empty($alt)) {
            // 为了确保每个图片都是 alt，以优化 SEO
            throw new Zend_View_Exception('Alt attribute should be filled.');
        }

        $basepath = $this->view->serverUrl() . '/upload/images/';
        $img = '<img src="' . $basepath . $src . '" '="" .="" 'height="' . $height . '" alt="' . $alt . '" width="' . $width . '">';

        return $img;
    }
    public function echosth() {
        return 'aaaa';
    }
}
==================================================
模板调用:index.phtml:
---------------------
    //当视图助手类只有一个方法或者调用视图助手类的第一个方法时
    echo $this->img('logo.jpg', 100, 100, 'woniu(woniu.me)');
    //也可以这样写(视图助手类的调用其他方法)
    echo $this->getHelper('Img')->img('logo.jpg', 100, 100, 'woniu(woniu.me)');