$application = new Zend_Application(
    APPLICATION_ENV,
    APPLICATION_PATH . '/configs/application.ini'
);

$application = new Zend_Application(
    APPLICATION_ENV,
    array(
        'config' => array(
            '/path/to/file1.ini',
            '/path/to/file2.ini',
        )
    )
);

[production]
phpSettings.display_startup_errors = 0
phpSettings.display_errors = 0
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
appnamespace = "Application"
resources.db.adapter = "PDO_SQLITE"
resources.db.params.dbname = APPLICATION_PATH "/../data/db/guestbook.db"
 
[staging : production]
 
[testing : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
resources.db.adapter = "PDO_SQLITE"
resources.db.params.dbname = APPLICATION_PATH "/../data/db/guestbook-testing.db"
 
[development : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
resources.db.adapter = "PDO_SQLITE"
resources.db.params.dbname = APPLICATION_PATH "/../data/db/guestbook-dev.db"

[production]
resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"
resources.frontController.params.displayExceptions = 0
resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts/"
resources.view[] =
 
[staging : production]
 
[testing : production]
 
[development : production]
resources.frontController.params.displayExceptions = 1

[production]
 
[staging : production]
 
[testing : production]
 
[development : production]

<?php
// Define path to application directory
defined('APPLICATION_PATH')
    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../application'));
 
// Define application environment
defined('APPLICATION_ENV')
    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));
 
// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../library'),
    get_include_path(),
)));
 
/** Zend_Application */
require_once 'Zend/Application.php';
 
// Create application, bootstrap, and run
$application = new Zend_Application(
    APPLICATION_ENV,
    array(
        'config' => array(
            APPLICATION_PATH . '/configs/application.ini',
            APPLICATION_PATH . '/configs/http.ini',
        )
    )
);
$application->bootstrap()
            ->run();

#!/usr/bin/env php
<?php
// Define path to application directory
defined('APPLICATION_PATH')
    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/../application'));
 
// Define application environment
if (!defined('APPLICATION_ENV')) {
    if (getenv('APPLICATION_ENV')) {
        define('APPLICATION_ENV', getenv('APPLICATION_ENV'));
    } else {
        if (preg_match('/\/(staging|production)+\//', __FILE__, $matches)) {
            define('APPLICATION_ENV', $matches[1]);
        } else {
            define('APPLICATION_ENV', 'development');
        }
    }
}
 
// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../library'),
    get_include_path(),
)));
 
/** Zend_Application */
require_once 'Zend/Application.php';
 
// Create application, bootstrap
$application = new Zend_Application(
    APPLICATION_ENV,
    array(
        'config' => array(
            APPLICATION_PATH . '/configs/application.ini',
            APPLICATION_PATH . '/configs/cli.ini',
        )
    )
);
$application->bootstrap();
 
// Do some work here

<?php
class PHPUnit_Extensions_TicketListener_GoogleCode extends PHPUnit_Extensions_TicketListener
{
    private $email;
    private $password;
    private $project;
 
    private $statusClosed;
    private $statusReopened;
 
    private $printTicketStateChanges;
 
    private $authUrl    = 'https://www.google.com/accounts/ClientLogin';
    private $apiBaseUrl = 'http://code.google.com/feeds/issues/p/%s/issues';
    private $authToken;
 
    /**
     * @param string $email          The email associated with the Google account.
     * @param string $password       The password associated with the Google account.
     * @param string $project        The project name of the system under test (SUT) on Google Code.
     * @param string $printTicketChanges Boolean flag to print the ticket state changes in the test result.
     * @param string $statusClosed   The status name of the closed state.
     * @param string $statusReopened The status name of the reopened state.
     * @throws RuntimeException
     */
    public function __construct($email, $password, $project, $printTicketStateChanges = FALSE,
                                $statusClosed = 'Fixed', $statusReopened = 'Started')
    {
        if (!extension_loaded('curl')) {
            throw new RuntimeException('ext/curl is not available');
        }
 
        $this->email          = $email;
        $this->password       = $password;
        $this->project        = $project;
 
        $this->statusClosed   = $statusClosed;
        $this->statusReopened = $statusReopened;
 
        $this->printTicketStateChanges = $printTicketStateChanges;
 
        $this->apiBaseUrl     = sprintf($this->apiBaseUrl, $project);
    }
 
    /**
     * @param  integer $ticketId
     * @return array
     * @throws RuntimeException
     */
    public function getTicketInfo($ticketId = null)
    {
        if (!is_numeric($ticketId)) {
            return array('status' => 'invalid_ticket_id');
        }
 
        $url = $this->apiBaseUrl . '/full/' . $ticketId;
 
        $header = array(
            'Authorization: GoogleLogin auth=' . $this->getAuthToken(),
        );
 
        list($status, $response) = $this->callGoogleCode($url, $header);
 
        if ($status != 200 || !$response) {
            return array('state' => 'unknown_ticket');
        }
 
        $ticket = new SimpleXMLElement(str_replace("xmlns=", "ns=", $response));
 
        $result = $ticket->xpath('//issues:state');
        $state  = (string) $result[0];
 
        if ($state === 'open') {
            return array('status' => 'new');
        }
 
        if ($state === 'closed') {
            return array('status' => 'closed');
        }
 
        return array('status' => $state);
    }
 
    /**
     * @param string $ticketId   The ticket number of the ticket under test (TUT).
     * @param string $statusToBe The status of the TUT after running the associated test.
     * @param string $message    The additional message for the TUT.
     * @param string $resolution The resolution for the TUT.
     * @throws RuntimeException
     */
    protected function updateTicket($ticketId, $statusToBe, $message, $resolution)
    {
        $url = $this->apiBaseUrl . '/' . $ticketId . '/comments/full';
 
        $header = array(
            'Authorization: GoogleLogin auth=' . $this->getAuthToken(),
            'Content-Type: application/atom+xml',
        );
 
        $ticketStatus = $statusToBe == 'closed' ? $this->statusClosed : $this->statusReopened;
 
        list($author,) = explode('@', $this->email);
 
        $post = '<?xml version="1.0" encoding="UTF-8"?>' .
                '<entry xmlns="http://www.w3.org/2005/Atom" ' .
                '       xmlns:issues="http://schemas.google.com/projecthosting/issues/2009">' .
                '  <content type="html">' . htmlspecialchars($message, ENT_COMPAT, 'UTF-8') . '</content>' .
                '  <author>' .
                '    <name>' . htmlspecialchars($author, ENT_COMPAT, 'UTF-8') . '</name>' .
                '  </author>' .
                '  <issues:updates>' .
                '    <issues:status>' . htmlspecialchars($ticketStatus, ENT_COMPAT, 'UTF-8') . '</issues:status>' .
                '  </issues:updates>' .
                '</entry>';
 
        list($status, $response) = $this->callGoogleCode($url, $header, $post);
 
        if ($status != 201) {
            throw new RuntimeException('Updating GoogleCode issue failed with status code ' . $status);
        }
 
        if ($this->printTicketStateChanges) {
            printf(
                "\nUpdating GoogleCode issue #%d, status: %s\n",
                $ticketId,
                $statusToBe
            );
        }
    }
 
    /**
     * @return string The auth token
     * @throws RuntimeException
     */
    private function getAuthToken()
    {
        if (null !== $this->authToken) {
            return $this->authToken;
        }
 
        $header = array(
            'Content-Type: application/x-www-form-urlencoded',
        );
 
        $post = array(
            'accountType' => 'GOOGLE',
            'Email'       => $this->email,
            'Passwd'      => $this->password,
            'service'     => 'code',
            'source'      => 'PHPUnit-TicketListener_GoogleCode-' . PHPUnit_Runner_Version::id(),
        );
 
        list($status, $response) = $this->callGoogleCode(
            $this->authUrl,
            $header,
            http_build_query($post, null, '&amp;')
        );
 
        if ($status != 200) {
            throw new RuntimeException('Google account authentication failed');
        }
 
        foreach (explode("\n", $response) as $line) {
            if (strpos(trim($line), 'Auth') === 0) {
                list($name, $token) = explode('=', $line);
                $this->authToken = trim($token);
                break;
            }
        }
 
        if (null === $this->authToken) {
            throw new RuntimeException('Could not detect auth token in response');
        }
 
        return $this->authToken;
    }
 
    /**
     * @param string  $url URL to call
     * @param array   $header Header
     * @param string  $post Post data
     * @return array
     */
    private function callGoogleCode($url, array $header = null, $post = null)
    {
        $curlHandle = curl_init();
 
        curl_setopt($curlHandle, CURLOPT_URL, $url);
        curl_setopt($curlHandle, CURLOPT_FOLLOWLOCATION, TRUE);
        curl_setopt($curlHandle, CURLOPT_FAILONERROR, TRUE);
        curl_setopt($curlHandle, CURLOPT_FRESH_CONNECT, TRUE);
        curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($curlHandle, CURLOPT_HTTPPROXYTUNNEL, TRUE);
        curl_setopt($curlHandle, CURLOPT_USERAGENT, __CLASS__);
        curl_setopt($curlHandle, CURLOPT_SSL_VERIFYPEER, FALSE);
 
        if (null !== $header) {
            curl_setopt($curlHandle, CURLOPT_HTTPHEADER, $header);
        }
 
        if (null !== $post) {
            curl_setopt($curlHandle, CURLOPT_POST, TRUE);
            curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $post);
        }
 
        $response = curl_exec($curlHandle);
        $status   = curl_getinfo($curlHandle, CURLINFO_HTTP_CODE);
 
        if (!$response) {
            throw new RuntimeException(curl_error($curlHandle));
        }
 
        curl_close($curlHandle);
 
        return array($status, $response);
    }
}
?>

<phpunit>
  <listeners>
    <listener class="PHPUnit_Extensions_TicketListener_GoogleCode" file="PHPUnit/Extensions/TicketListener/GoogleCode.php">
      <arguments>
        <string>GOOGLE_ACCOUNT_EMAIL</string>
        <string>GOOGLE_ACCOUNT_PASSWORD</string>
        <string>GOOGLE_CODE_PROJECT_NAME</string>
        <boolean>true</boolean>
        <string>Fixed</string>
        <string>Started</string>
      </arguments>
    </listener>
  </listeners>
</phpunit>

#!/usr/bin/env php
<?php
 
// Define path to application directory
defined('APPLICATION_PATH')
    || define('APPLICATION_PATH', realpath(dirname(__FILE__) . '/..'));
 
// Define application environment
//
// Use `export APPLICATION_ENV=development` or edit /etc/environment
// to change the application environment
defined('APPLICATION_ENV')
    || define('APPLICATION_ENV', (getenv('APPLICATION_ENV') ? getenv('APPLICATION_ENV') : 'production'));
 
// Ensure library/ is on include_path
set_include_path(implode(PATH_SEPARATOR, array(
    realpath(APPLICATION_PATH . '/../../library'),
    get_include_path(),
)));
 
/** Zend_Application */
require_once 'Zend/Application.php';
 
// Create application, bootstrap, and run
$application = new Zend_Application(
    APPLICATION_ENV,
    APPLICATION_PATH . '/configs/application.ini'
);
$config = $application->getOptions();
?>
source posts
{
    type                    = mysql
 
    sql_host                = <?php echo $config['resources']['db']['params']['host'] . "\n"; ?>
    sql_user                = <?php echo $config['resources']['db']['params']['username'] . "\n"; ?>
    sql_pass                = <?php echo $config['resources']['db']['params']['password'] . "\n"; ?>
    sql_db                  = <?php echo $config['resources']['db']['params']['dbname'] . "\n"; ?>
    # sql_port               = 3306    # optional, default is 3306
 
    sql_query_pre           = SET NAMES utf8
 
    sql_query               = \
        SELECT posts.id, posts.category_id, posts.title, posts.content, UNIX_TIMESTAMP(posts.created) AS created, \
               categories.name AS category_name, \
               GROUP_CONCAT(tags.tag SEPARATOR ', ') AS tags \
          FROM posts \
          JOIN categories ON (categories.id = posts.category_id) \
     LEFT JOIN posts_tags ON (posts_tags.post_id = posts.id) \
     LEFT JOIN tags ON (tags.id = posts_tags.tag_id) \
      GROUP BY posts.id
 
    sql_attr_uint           = category_id
    sql_attr_timestamp      = created
 
    sql_query_info          = \
        SELECT posts.id, posts.category_id, posts.title, posts.content, posts.created, \
               categories.name AS category_name, \
               GROUP_CONCAT(tags.tag SEPARATOR ', ') AS tags \
          FROM posts \
          JOIN categories ON (categories.id = posts.category_id) \
     LEFT JOIN posts_tags ON (posts_tags.post_id = posts.id) \
     LEFT JOIN tags ON (tags.id = posts_tags.tag_id) \
         WHERE posts.id=$id
}
 
index posts
{
    source                  = posts
    path                    = <?php echo $config['sphinx']['index']['path']; ?>/posts
    docinfo                 = extern
    html_strip              = 1
    charset_type            = utf-8
    # Character table for german (from http://www.sphinxsearch.com/forum/view.html?id=19)
    charset_table           = 0..9, A..Z->a..z, _, a..z, U+C4->U+E4, U+D6->U+F6, U+DC->U+FC, U+DF, U+E4, U+F6, U+FC
}
 
indexer
{
    mem_limit               = 32M
}
 
searchd
{
    listen                  = <?php echo $config['sphinx']['searchd']['listen'] . "\n"; ?>
    log                     = <?php echo $config['sphinx']['searchd']['log'] . "\n"; ?>
    query_log               = <?php echo $config['sphinx']['searchd']['query_log'] . "\n"; ?>
    read_timeout            = 5
    max_children            = 30
    pid_file                = <?php echo $config['sphinx']['searchd']['pid_file'] . "\n"; ?>
    max_matches             = 1000
    seamless_rotate         = 1
    preopen_indexes         = 0
    unlink_old              = 1
}

$ ./scripts/sphinx COMMAND ENVIRONMENT

$ ./scripts/sphinx start production

$ ./scripts/sphinx index-all development

$query = 'Mein Suchbegriff';
$select = $db->select();
$select->from('posts')
       ->joinInner('sphinx', 'sphinx.id = posts.id')
       ->where('sphinx.query = ?', $query . ';mode=any;sort=extended:@weight desc, @id asc;limit=10;offset=0;index=posts');
$result = $select->query()->fetchAll();

$dom = new Zend_Dom_Query($html);
$result = $dom->query('selector');
 
// Zend_Dom_Query_Result implements the Countable and Iterator interface
$count = count($result);
foreach ($result as $node) {
    // $node instanceof DOMElement
}

$result = $dom->query('#foo .bar a');

$result = $dom->query('#foo > a');

<?php
class FooControllerTest extends Zend_Test_PHPUnit_Controller_TestCase
{
    public function testIndexContainsLoginForm()
    {
        $this->dispatch('/');
        $this->assertQuery('#login-form');
    }
}

<?php
/**
 * @see Zend_Controller_Plugin_Abstract
 */
require_once 'Zend/Controller/Plugin/Abstract.php';
 
/**
 * @see Zend_Controller_Request_Http
 */
require_once 'Zend/Controller/Request/Http.php';
 
/**
 * @package    App_Controller
 * @subpackage App_Controller_Plugin
 */
class App_Controller_Plugin_HttpHandler extends Zend_Controller_Plugin_Abstract
{
    /**
     * Called before Zend_Controller_Front enters its dispatch loop.
     *
     * @param  Zend_Controller_Request_Abstract $request
     * @return void
     */
    public function dispatchLoopStartup(Zend_Controller_Request_Abstract $request)
    {
        if (!$request instanceof Zend_Controller_Request_Http) {
            return;
        }
 
        $vary = array();
 
        // Process Accept-Header (the format parameter will later be used by the ContextSwitch helper)
        if (false !== ($accept = $request->getHeader('Accept'))) {
            if (strstr($accept, 'application/xml') && !strstr($accept, 'html')) {
                $request->setParam('format', 'xml');
                $vary[] = 'Accept';
            } elseif (strstr($accept, 'application/json')) {
                $request->setParam('format', 'json');
                $vary[] = 'Accept';
            }
        }
 
        // Process non-standard Content-Types
        $rawBody = $request->getRawBody();
        if (!empty($rawBody)) {
            if (false !== ($contentType = $request->getHeader('Content-Type'))) {
                if (strstr($contentType, 'application/xml') ||
                    strstr($contentType, 'text/xml')) {
                    require_once 'Zend/Config/Xml.php';
                    $config = new Zend_Config_Xml($rawBody);
                    $request->setPost($config->toArray());
                } elseif (strstr($contentType, 'application/json')) {
                    require_once 'Zend/Json.php';
                    $request->setPost(Zend_Json::decode($rawBody));
                }
            }
        }
 
        // Process Range-Header
        if (false !== ($range = $request->getHeader('Range'))) {
            if (preg_match('/items=(\d+)\-(\d+)/i', $range, $matches)) {
                $request->setParam('range_start', $matches[1]);
                $request->setParam('range_end', $matches[2]);
                $vary[] = 'Range';
            }
        }
 
        // Set Vary-Header
        if (count($vary) > 0) {
            $response = $this->getResponse();
 
            // Keep existing Vary headers
            foreach ($response->getHeaders() as $header) {
                if (strtolower($header['name']) != 'vary') {
                    continue;
                }
 
                $vary[] = $header['value'];
                $response->clearHeader($header['name']);
            }
 
            $response->setHeader('Vary', implode(', ', $vary));
        }
    }
}

<?php
class NewsController extends Zend_Controller_Action
{
    public function init()
    {
        $this->_helper->contextSwitch()
            ->setAutoJsonSerialization(false)
            ->addActionContext('list', 'json')
            ->initContext();
    }
 
    /**
     * List news items
     */
    public function listAction()
    {
        if ($this->_request->range_start || $this->_request->range_end) {
            $start = (int) $this->_request->range_start;
            $end   = (int) $this->_request->range_end;
 
            $paginator = $newsModel->getItemsAsZendPaginatorObject();
 
            $count = $paginator->getTotalItemCount();
            $limit = !$end ? $count : $end - $start;
            $end   = !$end ? $count : $end;
 
            $this->view->items = $paginator->getAdapter()->getItems($start, $limit);
 
            // Set Content-Range-Header
            $this->_response
                ->setHttpResponseCode(206) // Partial content header
                ->setHeader('Content-Range', 'items ' . $start . '-'. $end . '/' . $count);
        } else {
            $this->view->items = $newsModel->getAllItems();
        }
    }
}

<?php echo $this->json($this->items->toArray()); ?>

$router->addRoute(
    'rest',
    new Zend_Rest_Route($frontcontroller, array(), array(
        'default' => array(
            'news',
        )
    ))
);

<?php
class NewsController extends Zend_Rest_Controller
{
    /**
     * The index action handles index/list requests; it should respond with a
     * list of the requested resources.
     */
    public function indexAction() { }
 
    /**
     * The get action handles GET requests and receives an 'id' parameter; it
     * should respond with the server resource state of the resource identified
     * by the 'id' value.
     */
    public function getAction() { }
 
    /**
     * The post action handles POST requests; it should accept and digest a
     * POSTed resource representation and persist the resource state.
     */
    public function postAction() { }
 
    /**
     * The put action handles PUT requests and receives an 'id' parameter; it
     * should update the server resource state of the resource identified by
     * the 'id' value.
     */
    public function putAction() { }
 
    /**
     * The delete action handles DELETE requests and receives an 'id'
     * parameter; it should update the server resource state of the resource
     * identified by the 'id' value.
     */
    public function deleteAction() { }
}

$ sudo apt-get install mysql-server-5.1

$ wget http://www.sphinxsearch.com/downloads/sphinx-0.9.9.tar.gz
$ tar -xvzf sphinx-0.9.9.tar.gz
$ cd sphinx-0.9.9/

$ wget http://snowball.tartarus.org/dist/libstemmer_c.tgz
$ tar -xvzf libstemmer_c.tgz

$ ./configure --with-libstemmer
$ make
$ sudo make install

$ cd ../
$ apt-get source mysql-server-5.1
$ cd mysql-dfsg-5.1-5.1.37/

$ cp -R ../sphinx-0.9.9/mysqlse storage/sphinx

$ wget http://downloads.mysql.com/archives/mysql-5.1/mysql-5.1.37.tar.gz
$ mkdir temp
$ tar -xzvf mysql-5.1.37.tar.gz -C temp
$ mv temp/mysql-5.1.37/Docs .
$ rm -rf temp
$ rm mysql-5.1.37.tar.gz

$ BUILD/autorun.sh
$ ./configure --prefix=/usr \
              --exec-prefix=/usr \
              --libexecdir=/usr/sbin \
              --datadir=/usr/share \
              --localstatedir=/var/lib/mysql \
              --includedir=/usr/include \
              --infodir=/usr/share/info \
              --mandir=/usr/share/man \
              --enable-thread-safe-client \
              --enable-local-infile \
              --with-pstack \
              --with-fast-mutexes \
              --with-big-tables \
              --with-unix-socket-path=/var/run/mysqld/mysqld.sock \
              --with-mysqld-user=mysql \
              --with-libwrap \
              --with-ssl \
              --without-docs \
              --with-extra-charsets=all \
              --with-embedded-server \
              --with-embedded-privilege-control
$ make

$ sudo mkdir /usr/lib/mysql/plugin
$ sudo cp storage/sphinx/.libs/ha_sphinx.so* /usr/lib/mysql/plugin/
$ sudo chown -R mysql:mysql /usr/lib/mysql/plugin

$ sudo vi /etc/mysql/my.cnf

plugin_dir = /usr/lib/mysql/plugin

$ sudo vi /etc/apparmor.d/usr.sbin.mysqld

/usr/lib/mysql/plugin/* mr,

$ sudo /etc/init.d/apparmor restart
$ sudo /etc/init.d/mysql restart

$ mysql -u root -p
mysql> INSTALL PLUGIN sphinx SONAME 'ha_sphinx.so';
Query OK, 0 rows affected (0.00 sec)

mysql> show engines;
+------------+----------+---------------------------------------------------------+
| Engine     | Support  | Comment                                                 |
+------------+----------+---------------------------------------------------------+
| MyISAM     | DEFAULT  | Default engine as of MySQL 3.23 with great performance  |
  ...
| SPHINX     | YES      | Sphinx storage engine 0.9.9                             |
  ...
+------------+----------+---------------------------------------------------------+
13 rows in set (0.00 sec)

<?php
/**
 * @see Zend_View_Helper_Abstract
 */
require_once 'Zend/View/Helper/Abstract.php';
 
/**
 * @see App_Filter_HtmlPurifier
 */
require_once 'App/Filter/HtmlPurifier.php';
 
/**
 * @category App
 * @package App_View
 * @subpackage Helper
 */
class Zend_View_Helper_HtmlPurifier extends Zend_View_Helper_Abstract
{
    /**
     * Returns the string $value, purified by HTMLPurifier
     *
     * @param string $value
     * @param mixed $config
     * @return string
     */
    public function htmlPurifier($value, $config = null)
    {
        $filter = new App_Filter_HtmlPurifier($config);
        return $filter->filter($value);
    }
}

$view->setHelperPath('App/View/Helper', 'App_View_Helper');

resources.view.helperPath.app.App_View_Helper = "App/View/Helper"

<p>
    <?php echo $this->htmlPurifier($this->comment_text, array('HTML.Allowed' => 'b,strong,a[href]')); ?>
</p>

$ pear channel-discover htmlpurifier.org
$ pear install hp/HTMLPurifier

<?php
/**
 * @see Zend_Filter_Interface
 */
require_once 'Zend/Filter/Interface.php';
 
/**
 * @category App
 * @package App_Filter
 */
class App_Filter_HtmlPurifier implements Zend_Filter_Interface
{
    /**
     * The HTMLPurifier instance
     *
     * @var HTMLPurifier
     */
    protected $_instance;
 
    /**
     * Constructor
     *
     * @param mixed $config
     * @return void
     */
    public function __construct($config = null)
    {
    	if (!class_exists('HTMLPurifier_Bootstrap', false)) {
            require_once 'HTMLPurifier/Bootstrap.php';
            spl_autoload_register(array('HTMLPurifier_Bootstrap', 'autoload'));
    	}
 
        $this->_instance = new HTMLPurifier($config);
    }
 
    /**
     * Defined by Zend_Filter_Interface
     *
     * Returns the string $value, purified by HTMLPurifier
     *
     * @param string $value
     * @return string
     */
    public function filter($value)
    {
        return $this->_instance->purify($value);
    }
}

$filter = new App_Filter_HtmlPurifier($config);
$cleanHtml = $filter->filter($dirtyHtml);

$form->addElementPrefixPath('App_Filter', 'App/Filter', Zend_Form_Element::FILTER);
$form->addElement('textarea', 'comment_text', array(
    'label' => 'Kommentar',
    'filters' => array(
        array('HtmlPurifier', array(array('HTML.Allowed' => 'b,strong,a[href]'))),
    ),
));