diff -r 000000000000 -r 4eba9c11703f web/Zend/Filter/Callback.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Filter/Callback.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,152 @@
+<?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_Filter
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: Callback.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * @see Zend_Filter_Interface
+ */
+require_once 'Zend/Filter/Interface.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Filter
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Filter_Callback implements Zend_Filter_Interface
+{
+    /**
+     * Callback in a call_user_func format
+     *
+     * @var string|array
+     */
+    protected $_callback = null;
+
+    /**
+     * Default options to set for the filter
+     *
+     * @var mixed
+     */
+    protected $_options = null;
+
+    /**
+     * Constructor
+     *
+     * @param string|array $callback Callback in a call_user_func format
+     * @param mixed        $options  (Optional) Default options for this filter
+     */
+    public function __construct($options)
+    {
+        if ($options instanceof Zend_Config) {
+            $options = $options->toArray();
+        } else if (!is_array($options) || !array_key_exists('callback', $options)) {
+            $options          = func_get_args();
+            $temp['callback'] = array_shift($options);
+            if (!empty($options)) {
+                $temp['options'] = array_shift($options);
+            }
+
+            $options = $temp;
+        }
+
+        if (!array_key_exists('callback', $options)) {
+            require_once 'Zend/Filter/Exception.php';
+            throw new Zend_Filter_Exception('Missing callback to use');
+        }
+
+        $this->setCallback($options['callback']);
+        if (array_key_exists('options', $options)) {
+            $this->setOptions($options['options']);
+        }
+    }
+
+    /**
+     * Returns the set callback
+     *
+     * @return string|array Set callback
+     */
+    public function getCallback()
+    {
+        return $this->_callback;
+    }
+
+    /**
+     * Sets a new callback for this filter
+     *
+     * @param unknown_type $callback
+     * @return unknown
+     */
+    public function setCallback($callback, $options = null)
+    {
+        if (!is_callable($callback)) {
+            require_once 'Zend/Filter/Exception.php';
+            throw new Zend_Filter_Exception('Callback can not be accessed');
+        }
+
+        $this->_callback = $callback;
+        $this->setOptions($options);
+        return $this;
+    }
+
+    /**
+     * Returns the set default options
+     *
+     * @return mixed
+     */
+    public function getOptions()
+    {
+        return $this->_options;
+    }
+
+    /**
+     * Sets new default options to the callback filter
+     *
+     * @param mixed $options Default options to set
+     * @return Zend_Filter_Callback
+     */
+    public function setOptions($options)
+    {
+        $this->_options = $options;
+        return $this;
+    }
+
+    /**
+     * Calls the filter per callback
+     *
+     * @param $value mixed Options for the set callback
+     * @return mixed       Result from the filter which was callbacked
+     */
+    public function filter($value)
+    {
+        $options = array();
+
+        if ($this->_options !== null) {
+            if (!is_array($this->_options)) {
+                $options = array($this->_options);
+            } else {
+                $options = $this->_options;
+            }
+        }
+
+        array_unshift($options, $value);
+
+        return call_user_func_array($this->_callback, $options);
+    }
+}
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