--- /dev/null
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Rule to compare two form fields
+ *
+ * PHP versions 4 and 5
+ *
+ * LICENSE: This source file is subject to version 3.01 of the PHP license
+ * that is available through the world-wide-web at the following URI:
+ * http://www.php.net/license/3_01.txt If you did not receive a copy of
+ * the PHP License and are unable to obtain it through the web, please
+ * send a note to license@php.net so we can mail you a copy immediately.
+ *
+ * @category HTML
+ * @package HTML_QuickForm
+ * @author Alexey Borzov <avb@php.net>
+ * @copyright 2001-2011 The PHP Group
+ * @license http://www.php.net/license/3_01.txt PHP License 3.01
+ * @version CVS: $Id$
+ * @link http://pear.php.net/package/HTML_QuickForm
+ */
+
+/**
+ * Abstract base class for QuickForm validation rules
+ */
+require_once 'HTML/QuickForm/Rule.php';
+
+/**
+ * Rule to compare two form fields
+ *
+ * The most common usage for this is to ensure that the password
+ * confirmation field matches the password field
+ *
+ * @category HTML
+ * @package HTML_QuickForm
+ * @author Alexey Borzov <avb@php.net>
+ * @version Release: 3.2.16
+ * @since 3.2
+ */
+class HTML_QuickForm_Rule_Compare extends HTML_QuickForm_Rule
+{
+ /**
+ * Possible operators to use
+ * @var array
+ * @access private
+ */
+ var $_operators = array(
+ 'eq' => '===',
+ 'neq' => '!==',
+ 'gt' => '>',
+ 'gte' => '>=',
+ 'lt' => '<',
+ 'lte' => '<=',
+ '==' => '===',
+ '!=' => '!=='
+ );
+
+
+ /**
+ * Returns the operator to use for comparing the values
+ *
+ * @access private
+ * @param string operator name
+ * @return string operator to use for validation
+ */
+ function _findOperator($name)
+ {
+ if (empty($name)) {
+ return '===';
+ } elseif (isset($this->_operators[$name])) {
+ return $this->_operators[$name];
+ } elseif (in_array($name, $this->_operators)) {
+ return $name;
+ } else {
+ return '===';
+ }
+ }
+
+
+ function validate($values, $operator = null)
+ {
+ $operator = $this->_findOperator($operator);
+ if ('===' != $operator && '!==' != $operator) {
+ $compareFn = create_function('$a, $b', 'return floatval($a) ' . $operator . ' floatval($b);');
+ } else {
+ $compareFn = create_function('$a, $b', 'return strval($a) ' . $operator . ' strval($b);');
+ }
+
+ return $compareFn($values[0], $values[1]);
+ }
+
+
+ function getValidationScript($operator = null)
+ {
+ $operator = $this->_findOperator($operator);
+ if ('===' != $operator && '!==' != $operator) {
+ $check = "!(Number({jsVar}[0]) {$operator} Number({jsVar}[1]))";
+ } else {
+ $check = "!(String({jsVar}[0]) {$operator} String({jsVar}[1]))";
+ }
+ return array('', "'' != {jsVar}[0] && {$check}");
+ }
+}
+?>