diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Validate/Alnum.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Validate/Alnum.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,150 @@
+<?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_Validate
+ * @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: Alnum.php 22668 2010-07-25 14:50:46Z thomas $
+ */
+
+/**
+ * @see Zend_Validate_Abstract
+ */
+require_once 'Zend/Validate/Abstract.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Validate
+ * @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_Validate_Alnum extends Zend_Validate_Abstract
+{
+    const INVALID      = 'alnumInvalid';
+    const NOT_ALNUM    = 'notAlnum';
+    const STRING_EMPTY = 'alnumStringEmpty';
+
+    /**
+     * Whether to allow white space characters; off by default
+     *
+     * @var boolean
+     * @deprecated
+     */
+    public $allowWhiteSpace;
+
+    /**
+     * Alphanumeric filter used for validation
+     *
+     * @var Zend_Filter_Alnum
+     */
+    protected static $_filter = null;
+
+    /**
+     * Validation failure message template definitions
+     *
+     * @var array
+     */
+    protected $_messageTemplates = array(
+        self::INVALID      => "Invalid type given. String, integer or float expected",
+        self::NOT_ALNUM    => "'%value%' contains characters which are non alphabetic and no digits",
+        self::STRING_EMPTY => "'%value%' is an empty string",
+    );
+
+    /**
+     * Sets default option values for this instance
+     *
+     * @param  boolean|Zend_Config $allowWhiteSpace
+     * @return void
+     */
+    public function __construct($allowWhiteSpace = false)
+    {
+        if ($allowWhiteSpace instanceof Zend_Config) {
+            $allowWhiteSpace = $allowWhiteSpace->toArray();
+        }
+
+        if (is_array($allowWhiteSpace)) {
+            if (array_key_exists('allowWhiteSpace', $allowWhiteSpace)) {
+                $allowWhiteSpace = $allowWhiteSpace['allowWhiteSpace'];
+            } else {
+                $allowWhiteSpace = false;
+            }
+        }
+
+        $this->allowWhiteSpace = (boolean) $allowWhiteSpace;
+    }
+
+    /**
+     * Returns the allowWhiteSpace option
+     *
+     * @return boolean
+     */
+    public function getAllowWhiteSpace()
+    {
+        return $this->allowWhiteSpace;
+    }
+
+    /**
+     * Sets the allowWhiteSpace option
+     *
+     * @param boolean $allowWhiteSpace
+     * @return Zend_Filter_Alnum Provides a fluent interface
+     */
+    public function setAllowWhiteSpace($allowWhiteSpace)
+    {
+        $this->allowWhiteSpace = (boolean) $allowWhiteSpace;
+        return $this;
+    }
+
+    /**
+     * Defined by Zend_Validate_Interface
+     *
+     * Returns true if and only if $value contains only alphabetic and digit characters
+     *
+     * @param  string $value
+     * @return boolean
+     */
+    public function isValid($value)
+    {
+        if (!is_string($value) && !is_int($value) && !is_float($value)) {
+            $this->_error(self::INVALID);
+            return false;
+        }
+
+        $this->_setValue($value);
+
+        if ('' === $value) {
+            $this->_error(self::STRING_EMPTY);
+            return false;
+        }
+
+        if (null === self::$_filter) {
+            /**
+             * @see Zend_Filter_Alnum
+             */
+            require_once 'Zend/Filter/Alnum.php';
+            self::$_filter = new Zend_Filter_Alnum();
+        }
+
+        self::$_filter->allowWhiteSpace = $this->allowWhiteSpace;
+
+        if ($value != self::$_filter->filter($value)) {
+            $this->_error(self::NOT_ALNUM);
+            return false;
+        }
+
+        return true;
+    }
+
+}