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Decodificar string com caracteres html para exibicao em html


unmeanings

Question

Ola tenho uma textarea na qual sua string esta codificada (Ou seja se eu escrever qualquer caractere especial como tags em html <>/ etc...) ela gera a visualizacao em outra string exibindo como texto puro por exemplo se eu escrevi na string (textarea): <img src="lala.jpg"/> ela ira me mostrar na outra string exatamente o codigo escrito (<img src...) O que preciso é que na segunda string onde recebo os dados inseridos na primeira string, decodifique os caracteres especiais escritos(<>/...) e gere a visualizacao em html ou seja se eu coloquei (<img src="lala.jpg"/>) ele mostre ao invés do codigo mostre a imagem lala.jpg

Segue abaixo o codigo da segunda string (que recebe o valor da primeira string)(A string chama-se $content e esta localizada no final do codigo):

<?php
/**
 * SocialEngine
 *
 * @category   Application_Core
 * @package    Fields
 * @copyright  Copyright 2006-2010 Webligo Developments
 * @license    http://www.socialengine.net/license/
 * @version    $Id: FieldValueLoop.php 8435 2011-02-10 03:42:17Z steve $
 * @author     John
 */

/**
 * @category   Application_Core
 * @package    Fields
 * @copyright  Copyright 2006-2010 Webligo Developments
 * @license    http://www.socialengine.net/license/
 * @author     John
 */
class Fields_View_Helper_FieldValueLoop extends Fields_View_Helper_FieldAbstract
{
  public function fieldValueLoop($subject, $partialStructure)
  {
    if( empty($partialStructure) ) {
      return '';
    }

    if( !($subject instanceof Core_Model_Item_Abstract) || !$subject->getIdentity() ) {
      return '';
    }
    
    // Generate
    $content = '';
    $lastContents = '';
    $lastHeadingTitle = null; //Zend_Registry::get('Zend_Translate')->_("Missing heading");

    $viewer = Engine_Api::_()->user()->getViewer();
    $show_hidden = $viewer->getIdentity()
                 ? ($subject->getOwner()->isSelf($viewer) || 'admin' === Engine_Api::_()->getItem('authorization_level', $viewer->level_id)->type)
                 : false;
    
    foreach( $partialStructure as $map ) {

      // Get field meta object
      $field = $map->getChild();
      $value = $field->getValue($subject);
      if( !$field || $field->type == 'profile_type' ) continue;
      if( !$field->display && !$show_hidden ) continue;
      
      // Heading
      if( $field->type == 'heading' ) {
        if( !empty($lastContents) ) {
          $content .= $this->_buildLastContents($lastContents, $lastHeadingTitle);
          $lastContents = '';
        }
        $lastHeadingTitle = $this->view->translate($field->label);
      }
      
      // Normal fields
      else
      {
        $tmp = $this->getFieldValueString($field, $value, $subject, $map, $partialStructure);
        if( !empty($tmp) ) {

          $notice = !$field->display && $show_hidden
                  ? sprintf('<div class="tip"><span>%s</span></div>',
                      $this->view->translate('This field is hidden and only visible to you and admins:'))
                  : '';
          $label = $this->view->translate($field->label);
          $lastContents .= <<<EOF
  <li>
    {$notice}
    <span>
      {$label}
    </span>
    <span>
      {$tmp}
    </span>
  </li>
EOF;
        }


         $lastContents .= '';
        $lastContents;
      }
      
    }

    if( !empty($lastContents) ) {
      $content .= $this->_buildLastContents($lastContents, $lastHeadingTitle);
    }

    return $content;
  }

  public function getFieldValueString($field, $value, $subject, $map = null,
      $partialStructure = null)
  {
    if( (!is_object($value) || !isset($value->value)) && !is_array($value) ) {
      return null;
    }
    
    // @todo This is not good practice:
    // if($field->type =='textarea'||$field->type=='about_me') $value->value = nl2br($value->value);

    $helperName = Engine_Api::_()->fields()->getFieldInfo($field->type, 'helper');
    if( !$helperName ) {
      return null;
    }

    $helper = $this->view->getHelper($helperName);
    if( !$helper ) {
      return null;
    }

    $helper->structure = $partialStructure;
    $helper->map = $map;
    $helper->field = $field;
    $helper->subject = $subject;
    $tmp = $helper->$helperName($subject, $field, $value);
    unset($helper->structure);
    unset($helper->map);
    unset($helper->field);
    unset($helper->subject);
    
    return $tmp;
  }

  protected function _buildLastContents($content, $title)
  {
    if( !$title ) {
      return '<ul>' . $content . '</ul>';
    }
    return <<<EOF
        <div class="profile_fields">
          <h4>
            <span>{$title}</span>
          </h4>
          <ul>
            {$content}
          </ul>
        </div>
EOF;
  }
}
Eu uso o ZEND framework em meu sistema e apos procurar e procurar achei o arquivo responsavel pelo encode ('htmlspecialchars', 'htmlentities') no qual nome do arquivo zend é abstract.php segue abaixo o codigo abstract.php:
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_View
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Abstract.php 16541 2009-07-07 06:59:03Z bkarwin $
 */

/** Zend_Loader */
// require_once 'Zend/Loader.php';

/** Zend_Loader_PluginLoader */
// require_once 'Zend/Loader/PluginLoader.php';

/** Zend_View_Interface */
// require_once 'Zend/View/Interface.php';

/**
 * Abstract class for Zend_View to help enforce private constructs.
 *
 * @category   Zend
 * @package    Zend_View
 * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
abstract class Zend_View_Abstract implements Zend_View_Interface
{
    /**
     * Path stack for script, helper, and filter directories.
     *
     * @var array
     */
    private $_path = array(
        'script' => array(),
        'helper' => array(),
        'filter' => array(),
    );

    /**
     * Script file name to execute
     *
     * @var string
     */
    private $_file = null;

    /**
     * Instances of helper objects.
     *
     * @var array
     */
    private $_helper = array();

    /**
     * Map of helper => class pairs to help in determining helper class from
     * name
     * @var array
     */
    private $_helperLoaded = array();

    /**
     * Map of helper => classfile pairs to aid in determining helper classfile
     * @var array
     */
    private $_helperLoadedDir = array();

    /**
     * Stack of Zend_View_Filter names to apply as filters.
     * @var array
     */
    private $_filter = array();

    /**
     * Stack of Zend_View_Filter objects that have been loaded
     * @var array
     */
    private $_filterClass = array();

    /**
     * Map of filter => class pairs to help in determining filter class from
     * name
     * @var array
     */
    private $_filterLoaded = array();

    /**
     * Map of filter => classfile pairs to aid in determining filter classfile
     * @var array
     */
    private $_filterLoadedDir = array();

    /**
     * Callback for escaping.
     *
     * @var string
     */
    private $_escape = 'htmlspecialchars';

    /**
     * Encoding to use in escaping mechanisms; defaults to latin1 (ISO-8859-1)
     * @var string
     */
    private $_encoding = 'ISO-8859-1';

    /**
     * Flag indicating whether or not LFI protection for rendering view scripts is enabled
     * @var bool
     */
    private $_lfiProtectionOn = true;

    /**
     * Plugin loaders
     * @var array
     */
    private $_loaders = array();

    /**
     * Plugin types
     * @var array
     */
    private $_loaderTypes = array('filter', 'helper');

    /**
     * Strict variables flag; when on, undefined variables accessed in the view
     * scripts will trigger notices
     * @var boolean
     */
    private $_strictVars = false;

    private $_log;

    /**
     * Constructor.
     *
     * @param array $config Configuration key-value pairs.
     */
    public function __construct($config = array())
    {
        // set inital paths and properties
        $this->setScriptPath(null);

        // $this->setHelperPath(null);
        $this->setFilterPath(null);

        // user-defined escaping callback
        if (array_key_exists('escape', $config)) {
            $this->setEscape($config['escape']);
        }

        // encoding
        if (array_key_exists('encoding', $config)) {
            $this->setEncoding($config['encoding']);
        }

        // base path
        if (array_key_exists('basePath', $config)) {
            $prefix = 'Zend_View';
            if (array_key_exists('basePathPrefix', $config)) {
                $prefix = $config['basePathPrefix'];
            }
            $this->setBasePath($config['basePath'], $prefix);
        }

        // user-defined view script path
        if (array_key_exists('scriptPath', $config)) {
            $this->addScriptPath($config['scriptPath']);
        }

        // user-defined helper path
        if (array_key_exists('helperPath', $config)) {
            if (is_array($config['helperPath'])) {
                foreach ($config['helperPath'] as $prefix => $path) {
                    $this->addHelperPath($path, $prefix);
                }
            } else {
                $prefix = 'Zend_View_Helper';
                if (array_key_exists('helperPathPrefix', $config)) {
                    $prefix = $config['helperPathPrefix'];
                }
                $this->addHelperPath($config['helperPath'], $prefix);
            }
        }

        // user-defined filter path
        if (array_key_exists('filterPath', $config)) {
            if (is_array($config['filterPath'])) {
                foreach ($config['filterPath'] as $prefix => $path) {
                    $this->addFilterPath($path, $prefix);
                }
            } else {
                $prefix = 'Zend_View_Filter';
                if (array_key_exists('filterPathPrefix', $config)) {
                    $prefix = $config['filterPathPrefix'];
                }
                $this->addFilterPath($config['filterPath'], $prefix);
            }
        }

        // user-defined filters
        if (array_key_exists('filter', $config)) {
            $this->addFilter($config['filter']);
        }

        // strict vars
        if (array_key_exists('strictVars', $config)) {
            $this->strictVars($config['strictVars']);
        }

        // LFI protection flag
        if (array_key_exists('lfiProtectionOn', $config)) {
            $this->setLfiProtection($config['lfiProtectionOn']);
        }

        $this->init();
    }

    /**
     * Return the template engine object
     *
     * Returns the object instance, as it is its own template engine
     *
     * @return Zend_View_Abstract
     */
    public function getEngine()
    {
        return $this;
    }

    /**
     * Allow custom object initialization when extending Zend_View_Abstract or
     * Zend_View
     *
     * Triggered by {@link __construct() the constructor} as its final action.
     *
     * @return void
     */
    public function init()
    {
    }

    /**
     * Prevent E_NOTICE for nonexistent values
     *
     * If {@link strictVars()} is on, raises a notice.
     *
     * @param  string $key
     * @return null
     */
    public function __get($key)
    {
        if ($this->_strictVars) {
            trigger_error('Key "' . $key . '" does not exist', E_USER_NOTICE);
        }

        return null;
    }

    /**
     * Allows testing with empty() and isset() to work inside
     * templates.
     *
     * @param  string $key
     * @return boolean
     */
    public function __isset($key)
    {
        if ('_' != substr($key, 0, 1)) {
            return isset($this->$key);
        }

        return false;
    }

    /**
     * Directly assigns a variable to the view script.
     *
     * Checks first to ensure that the caller is not attempting to set a
     * protected or private member (by checking for a prefixed underscore); if
     * not, the public member is set; otherwise, an exception is raised.
     *
     * @param string $key The variable name.
     * @param mixed $val The variable value.
     * @return void
     * @throws Zend_View_Exception if an attempt to set a private or protected
     * member is detected
     */
    public function __set($key, $val)
    {
        if ('_' != substr($key, 0, 1)) {
            $this->$key = $val;
            return;
        }

        // require_once 'Zend/View/Exception.php';
        throw new Zend_View_Exception('Setting private or protected class members is not allowed', $this);
    }

    /**
     * Allows unset() on object properties to work
     *
     * @param string $key
     * @return void
     */
    public function __unset($key)
    {
        if ('_' != substr($key, 0, 1) && isset($this->$key)) {
            unset($this->$key);
        }
    }

    /**
     * Accesses a helper object from within a script.
     *
     * If the helper class has a 'view' property, sets it with the current view
     * object.
     *
     * @param string $name The helper name.
     * @param array $args The parameters for the helper.
     * @return string The result of the helper output.
     */
    public function __call($name, $args)
    {
        // is the helper already loaded?
        $helper = $this->getHelper($name);

        // call the helper method
        return call_user_func_array(
            array($helper, $name),
            $args
        );
    }

    /**
     * Given a base path, sets the script, helper, and filter paths relative to it
     *
     * Assumes a directory structure of:
     * <code>
     * basePath/
     *     scripts/
     *     helpers/
     *     filters/
     * </code>
     *
     * @param  string $path
     * @param  string $prefix Prefix to use for helper and filter paths
     * @return Zend_View_Abstract
     */
    public function setBasePath($path, $classPrefix = 'Zend_View')
    {
        $path        = rtrim($path, '/');
        $path        = rtrim($path, '\\');
        $path       .= DIRECTORY_SEPARATOR;
        $classPrefix = rtrim($classPrefix, '_') . '_';
        $this->setScriptPath($path . 'scripts');
        $this->setHelperPath($path . 'helpers', $classPrefix . 'Helper');
        $this->setFilterPath($path . 'filters', $classPrefix . 'Filter');
        return $this;
    }

    /**
     * Given a base path, add script, helper, and filter paths relative to it
     *
     * Assumes a directory structure of:
     * <code>
     * basePath/
     *     scripts/
     *     helpers/
     *     filters/
     * </code>
     *
     * @param  string $path
     * @param  string $prefix Prefix to use for helper and filter paths
     * @return Zend_View_Abstract
     */
    public function addBasePath($path, $classPrefix = 'Zend_View')
    {
        $path        = rtrim($path, '/');
        $path        = rtrim($path, '\\');
        $path       .= DIRECTORY_SEPARATOR;
        $classPrefix = rtrim($classPrefix, '_') . '_';
        $this->addScriptPath($path . 'scripts');
        $this->addHelperPath($path . 'helpers', $classPrefix . 'Helper');
        $this->addFilterPath($path . 'filters', $classPrefix . 'Filter');
        return $this;
    }

    /**
     * Adds to the stack of view script paths in LIFO order.
     *
     * @param string|array The directory (-ies) to add.
     * @return Zend_View_Abstract
     */
    public function addScriptPath($path)
    {
        $this->_addPath('script', $path);
        return $this;
    }

    /**
     * Resets the stack of view script paths.
     *
     * To clear all paths, use Zend_View::setScriptPath(null).
     *
     * @param string|array The directory (-ies) to set as the path.
     * @return Zend_View_Abstract
     */
    public function setScriptPath($path)
    {
        $this->_path['script'] = array();
        $this->_addPath('script', $path);
        return $this;
    }

    /**
     * Return full path to a view script specified by $name
     *
     * @param  string $name
     * @return false|string False if script not found
     * @throws Zend_View_Exception if no script directory set
     */
    public function getScriptPath($name)
    {
        try {
            $path = $this->_script($name);
            return $path;
        } catch (Zend_View_Exception $e) {
            if (strstr($e->getMessage(), 'no view script directory set')) {
                throw $e;
            }

            return false;
        }
    }

    /**
     * Returns an array of all currently set script paths
     *
     * @return array
     */
    public function getScriptPaths()
    {
        return $this->_getPaths('script');
    }

    /**
     * Set plugin loader for a particular plugin type
     *
     * @param  Zend_Loader_PluginLoader $loader
     * @param  string $type
     * @return Zend_View_Abstract
     */
    public function setPluginLoader(Zend_Loader_PluginLoader $loader, $type)
    {
        $type = strtolower($type);
        if (!in_array($type, $this->_loaderTypes)) {
            // require_once 'Zend/View/Exception.php';
            throw new Zend_View_Exception(sprintf('Invalid plugin loader type "%s"', $type));
        }

        $this->_loaders[$type] = $loader;
        return $this;
    }

    /**
     * Retrieve plugin loader for a specific plugin type
     *
     * @param  string $type
     * @return Zend_Loader_PluginLoader
     */
    public function getPluginLoader($type)
    {
        $type = strtolower($type);
        if (!in_array($type, $this->_loaderTypes)) {
            // require_once 'Zend/View/Exception.php';
            throw new Zend_View_Exception(sprintf('Invalid plugin loader type "%s"; cannot retrieve', $type));
        }

        if (!array_key_exists($type, $this->_loaders)) {
            $prefix     = 'Zend_View_';
            $pathPrefix = 'Zend/View/';

            $pType = ucfirst($type);
            switch ($type) {
                case 'filter':
                case 'helper':
                default:
                    $prefix     .= $pType;
                    $pathPrefix .= $pType;
                    $loader = new Zend_Loader_PluginLoader(array(
                        $prefix => $pathPrefix
                    ));
                    $this->_loaders[$type] = $loader;
                    break;
            }
        }
        return $this->_loaders[$type];
    }

    /**
     * Adds to the stack of helper paths in LIFO order.
     *
     * @param string|array The directory (-ies) to add.
     * @param string $classPrefix Class prefix to use with classes in this
     * directory; defaults to Zend_View_Helper
     * @return Zend_View_Abstract
     */
    public function addHelperPath($path, $classPrefix = 'Zend_View_Helper_')
    {
        return $this->_addPluginPath('helper', $classPrefix, (array) $path);
    }

    /**
     * Resets the stack of helper paths.
     *
     * To clear all paths, use Zend_View::setHelperPath(null).
     *
     * @param string|array $path The directory (-ies) to set as the path.
     * @param string $classPrefix The class prefix to apply to all elements in
     * $path; defaults to Zend_View_Helper
     * @return Zend_View_Abstract
     */
    public function setHelperPath($path, $classPrefix = 'Zend_View_Helper_')
    {
        unset($this->_loaders['helper']);
        return $this->addHelperPath($path, $classPrefix);
    }

    /**
     * Get full path to a helper class file specified by $name
     *
     * @param  string $name
     * @return string|false False on failure, path on success
     */
    public function getHelperPath($name)
    {
        return $this->_getPluginPath('helper', $name);
    }

    /**
     * Returns an array of all currently set helper paths
     *
     * @return array
     */
    public function getHelperPaths()
    {
        return $this->getPluginLoader('helper')->getPaths();
    }

    /**
     * Get a helper by name
     *
     * @param  string $name
     * @return object
     */
    public function getHelper($name)
    {
        return $this->_getPlugin('helper', $name);
    }

    /**
     * Get array of all active helpers
     *
     * Only returns those that have already been instantiated.
     *
     * @return array
     */
    public function getHelpers()
    {
        return $this->_helper;
    }

    /**
     * Adds to the stack of filter paths in LIFO order.
     *
     * @param string|array The directory (-ies) to add.
     * @param string $classPrefix Class prefix to use with classes in this
     * directory; defaults to Zend_View_Filter
     * @return Zend_View_Abstract
     */
    public function addFilterPath($path, $classPrefix = 'Zend_View_Filter_')
    {
        return $this->_addPluginPath('filter', $classPrefix, (array) $path);
    }

    /**
     * Resets the stack of filter paths.
     *
     * To clear all paths, use Zend_View::setFilterPath(null).
     *
     * @param string|array The directory (-ies) to set as the path.
     * @param string $classPrefix The class prefix to apply to all elements in
     * $path; defaults to Zend_View_Filter
     * @return Zend_View_Abstract
     */
    public function setFilterPath($path, $classPrefix = 'Zend_View_Filter_')
    {
        unset($this->_loaders['filter']);
        return $this->addFilterPath($path, $classPrefix);
    }

    /**
     * Get full path to a filter class file specified by $name
     *
     * @param  string $name
     * @return string|false False on failure, path on success
     */
    public function getFilterPath($name)
    {
        return $this->_getPluginPath('filter', $name);
    }

    /**
     * Get a filter object by name
     *
     * @param  string $name
     * @return object
     */
    public function getFilter($name)
    {
        return $this->_getPlugin('filter', $name);
    }

    /**
     * Return array of all currently active filters
     *
     * Only returns those that have already been instantiated.
     *
     * @return array
     */
    public function getFilters()
    {
        return $this->_filter;
    }

    /**
     * Returns an array of all currently set filter paths
     *
     * @return array
     */
    public function getFilterPaths()
    {
        return $this->getPluginLoader('filter')->getPaths();
    }

    /**
     * Return associative array of path types => paths
     *
     * @return array
     */
    public function getAllPaths()
    {
        $paths = $this->_path;
        $paths['helper'] = $this->getHelperPaths();
        $paths['filter'] = $this->getFilterPaths();
        return $paths;
    }

    /**
     * Add one or more filters to the stack in FIFO order.
     *
     * @param string|array One or more filters to add.
     * @return Zend_View_Abstract
     */
    public function addFilter($name)
    {
        foreach ((array) $name as $val) {
            $this->_filter[] = $val;
        }
        return $this;
    }

    /**
     * Resets the filter stack.
     *
     * To clear all filters, use Zend_View::setFilter(null).
     *
     * @param string|array One or more filters to set.
     * @return Zend_View_Abstract
     */
    public function setFilter($name)
    {
        $this->_filter = array();
        $this->addFilter($name);
        return $this;
    }

    /**
     * Sets the _escape() callback.
     *
     * @param mixed $spec The callback for _escape() to use.
     * @return Zend_View_Abstract
     */
    public function setEscape($spec)
    {
        $this->_escape = $spec;
        return $this;
    }

    /**
     * Set LFI protection flag
     * 
     * @param  bool $flag 
     * @return Zend_View_Abstract
     */
    public function setLfiProtection($flag)
    {
        $this->_lfiProtectionOn = (bool) $flag;
        return $this;
    }

    /**
     * Return status of LFI protection flag
     * 
     * @return bool
     */
    public function isLfiProtectionOn()
    {
        return $this->_lfiProtectionOn;
    }

    /**
     * Assigns variables to the view script via differing strategies.
     *
     * Zend_View::assign('name', $value) assigns a variable called 'name'
     * with the corresponding $value.
     *
     * Zend_View::assign($array) assigns the array keys as variable
     * names (with the corresponding array values).
     *
     * @see    __set()
     * @param  string|array The assignment strategy to use.
     * @param  mixed (Optional) If assigning a named variable, use this
     * as the value.
     * @return Zend_View_Abstract Fluent interface
     * @throws Zend_View_Exception if $spec is neither a string nor an array,
     * or if an attempt to set a private or protected member is detected
     */
    public function assign($spec, $value = null)
    {
        // which strategy to use?
        if (is_string($spec)) {
            // assign by name and value
            if ('_' == substr($spec, 0, 1)) {
                // require_once 'Zend/View/Exception.php';
                throw new Zend_View_Exception('Setting private or protected class members is not allowed', $this);
            }
            $this->$spec = $value;
        } elseif (is_array($spec)) {
            // assign from associative array
            $error = false;
            foreach ($spec as $key => $val) {
                // Webligo fix
                if ('' == $key || '_' == substr($key, 0, 1)) {
                //if ('_' == substr($key, 0, 1)) {
                    $error = true;
                    break;
                }
                $this->$key = $val;
            }
            if ($error) {
                // require_once 'Zend/View/Exception.php';
                throw new Zend_View_Exception('Setting private or protected class members is not allowed', $this);
            }
        } else {
            // require_once 'Zend/View/Exception.php';
            throw new Zend_View_Exception('assign() expects a string or array, received ' . gettype($spec), $this);
        }

        return $this;
    }

    /**
     * Return list of all assigned variables
     *
     * Returns all public properties of the object. Reflection is not used
     * here as testing reflection properties for visibility is buggy.
     *
     * @return array
     */
    public function getVars()
    {
        $vars   = get_object_vars($this);
        foreach ($vars as $key => $value) {
            if ('_' == substr($key, 0, 1)) {
                unset($vars[$key]);
            }
        }

        return $vars;
    }

    /**
     * Clear all assigned variables
     *
     * Clears all variables assigned to Zend_View either via {@link assign()} or
     * property overloading ({@link __set()}).
     *
     * @return void
     */
    public function clearVars()
    {
        $vars   = get_object_vars($this);
        foreach ($vars as $key => $value) {
            if ('_' != substr($key, 0, 1)) {
                unset($this->$key);
            }
        }
    }

    /**
     * Processes a view script and returns the output.
     *
     * @param string $name The script script name to process.
     * @return string The script output.
     */
    public function render($name)
    {
        // find the script file name using the parent private method
        $this->_file = $this->_script($name);
        unset($name); // remove $name from local scope

        ob_start();
        $this->_run($this->_file);

        return $this->_filter(ob_get_clean()); // filter output
    }

    /**
     * Escapes a value for output in a view script.
     *
     * If escaping mechanism is one of htmlspecialchars or htmlentities, uses
     * {@link $_encoding} setting.
     *
     * @param mixed $var The output to escape.
     * @return mixed The escaped value.
     */
    public function escape($var)
    {
        if (in_array($this->_escape, array('htmlspecialchars', 'htmlentities'))) {
            return call_user_func($this->_escape, $var, ENT_COMPAT, $this->_encoding);
        }

        return call_user_func($this->_escape, $var);
    }

    /**
     * Set encoding to use with htmlentities() and htmlspecialchars()
     *
     * @param string $encoding
     * @return Zend_View_Abstract
     */
    public function setEncoding($encoding)
    {
        $this->_encoding = $encoding;
        return $this;
    }

    /**
     * Return current escape encoding
     *
     * @return string
     */
    public function getEncoding()
    {
        return $this->_encoding;
    }

    /**
     * Enable or disable strict vars
     *
     * If strict variables are enabled, {@link __get()} will raise a notice
     * when a variable is not defined.
     *
     * Use in conjunction with {@link Zend_View_Helper_DeclareVars the declareVars() helper}
     * to enforce strict variable handling in your view scripts.
     *
     * @param  boolean $flag
     * @return Zend_View_Abstract
     */
    public function strictVars($flag = true)
    {
        $this->_strictVars = ($flag) ? true : false;

        return $this;
    }

    /**
     * Finds a view script from the available directories.
     *
     * @param $name string The base name of the script.
     * @return void
     */
    protected function _script($name)
    {
        if ($this->isLfiProtectionOn() && preg_match('#\.\.[\\\/]#', $name)) {
            // require_once 'Zend/View/Exception.php';
            throw new Zend_View_Exception('Requested scripts may not include parent directory traversal ("../", "..\\" notation)');
        }

        if (0 == count($this->_path['script'])) {
            // require_once 'Zend/View/Exception.php';
            throw new Zend_View_Exception('no view script directory set; unable to determine location for view script',
                $this);
        }

        foreach ($this->_path['script'] as $dir) {
            if (is_readable($dir . $name)) {
                return $dir . $name;
            }
        }

        // require_once 'Zend/View/Exception.php';
        $message = "script '$name' not found in path ("
                 . implode(PATH_SEPARATOR, $this->_path['script'])
                 . ")";
        throw new Zend_View_Exception($message, $this);
    }

    /**
     * Applies the filter callback to a buffer.
     *
     * @param string $buffer The buffer contents.
     * @return string The filtered buffer.
     */
    private function _filter($buffer)
    {
        // loop through each filter class
        foreach ($this->_filter as $name) {
            // load and apply the filter class
            $filter = $this->getFilter($name);
            $buffer = call_user_func(array($filter, 'filter'), $buffer);
        }

        // done!
        return $buffer;
    }

    /**
     * Adds paths to the path stack in LIFO order.
     *
     * Zend_View::_addPath($type, 'dirname') adds one directory
     * to the path stack.
     *
     * Zend_View::_addPath($type, $array) adds one directory for
     * each array element value.
     *
     * In the case of filter and helper paths, $prefix should be used to
     * specify what class prefix to use with the given path.
     *
     * @param string $type The path type ('script', 'helper', or 'filter').
     * @param string|array $path The path specification.
     * @param string $prefix Class prefix to use with path (helpers and filters
     * only)
     * @return void
     */
    private function _addPath($type, $path, $prefix = null)
    {
        foreach ((array) $path as $dir) {
            // attempt to strip any possible separator and
            // append the system directory separator
            $dir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $dir);
            $dir = rtrim($dir, DIRECTORY_SEPARATOR . DIRECTORY_SEPARATOR)
                 . DIRECTORY_SEPARATOR;

            switch ($type) {
                case 'script':
                    // add to the top of the stack.
                    array_unshift($this->_path[$type], $dir);
                    break;
                case 'filter':
                case 'helper':
                default:
                    // add as array with prefix and dir keys
                    array_unshift($this->_path[$type], array('prefix' => $prefix, 'dir' => $dir));
                    break;
            }
        }
    }

    /**
     * Resets the path stack for helpers and filters.
     *
     * @param string $type The path type ('helper' or 'filter').
     * @param string|array $path The directory (-ies) to set as the path.
     * @param string $classPrefix Class prefix to apply to elements of $path
     */
    private function _setPath($type, $path, $classPrefix = null)
    {
        $dir = DIRECTORY_SEPARATOR . ucfirst($type) . DIRECTORY_SEPARATOR;

        switch ($type) {
            case 'script':
                $this->_path[$type] = array(dirname(__FILE__) . $dir);
                $this->_addPath($type, $path);
                break;
            case 'filter':
            case 'helper':
            default:
                $this->_path[$type] = array(array(
                    'prefix' => 'Zend_View_' . ucfirst($type) . '_',
                    'dir'    => dirname(__FILE__) . $dir
                ));
                $this->_addPath($type, $path, $classPrefix);
                break;
        }
    }

    /**
     * Return all paths for a given path type
     *
     * @param string $type The path type  ('helper', 'filter', 'script')
     * @return array
     */
    private function _getPaths($type)
    {
        return $this->_path[$type];
    }

    /**
     * Register helper class as loaded
     *
     * @param  string $name
     * @param  string $class
     * @param  string $file path to class file
     * @return void
     */
    private function _setHelperClass($name, $class, $file)
    {
        $this->_helperLoadedDir[$name] = $file;
        $this->_helperLoaded[$name]    = $class;
    }

    /**
     * Register filter class as loaded
     *
     * @param  string $name
     * @param  string $class
     * @param  string $file path to class file
     * @return void
     */
    private function _setFilterClass($name, $class, $file)
    {
        $this->_filterLoadedDir[$name] = $file;
        $this->_filterLoaded[$name]    = $class;
    }

    /**
     * Add a prefixPath for a plugin type
     *
     * @param  string $type
     * @param  string $classPrefix
     * @param  array $paths
     * @return Zend_View_Abstract
     */
    private function _addPluginPath($type, $classPrefix, array $paths)
    {
        $loader = $this->getPluginLoader($type);
        foreach ($paths as $path) {
            $loader->addPrefixPath($classPrefix, $path);
        }
        return $this;
    }

    /**
     * Get a path to a given plugin class of a given type
     *
     * @param  string $type
     * @param  string $name
     * @return string|false
     */
    private function _getPluginPath($type, $name)
    {
        $loader = $this->getPluginLoader($type);
        if ($loader->isLoaded($name)) {
            return $loader->getClassPath($name);
        }

        try {
            $loader->load($name);
            return $loader->getClassPath($name);
        } catch (Zend_Loader_Exception $e) {
            return false;
        }
    }

    /**
     * Retrieve a plugin object
     *
     * @param  string $type
     * @param  string $name
     * @return object
     */
    private function _getPlugin($type, $name)
    {
        $name = ucfirst($name);
        switch ($type) {
            case 'filter':
                $storeVar = '_filterClass';
                $store    = $this->_filterClass;
                break;
            case 'helper':
                $storeVar = '_helper';
                $store    = $this->_helper;
                break;
        }

        if (!isset($store[$name])) {
            $class = $this->getPluginLoader($type)->load($name);
            $store[$name] = new $class();
            if (method_exists($store[$name], 'setView')) {
                $store[$name]->setView($this);
            }
        }

        $this->$storeVar = $store;
        return $store[$name];
    }

    /**
     * Use to include the view script in a scope that only allows public
     * members.
     *
     * @return mixed
     */
    abstract protected function _run();
}

Obrigado pela atencao e espero que alguém possa me ajudar,

boa noite... :)

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