Location: PHPKode > projects > Pieforms > pieforms-php5-0.2.2/src/pieform/rules/validateoptions.php
 * This program is part of Pieforms
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  GNU General Public License for more details.
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 * @package    pieform
 * @subpackage rule
 * @author     Nigel McNie <hide@address.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL
 * @copyright  (C) 2006 Catalyst IT Ltd http://catalyst.net.nz

 * Makes sure that the submitted value is specified in the 'options' index of
 * the element. This prevents malicious people from doing things like
 * submitting values that aren't in a select box.
 * @param Pieform $form      The form the rule is being applied to
 * @param string  $field     The field to check
 * @param string  $element   The element being checked
 * @return string            The error message, if the value is invalid.
function pieform_rule_validateoptions(Pieform $form, $field, $element) {
    // Get the value into an array as a key if it's a scalar, since
    // the actual check involves array keys
    $field = (array) $field;

    $allowedvalues = array_keys($element['options']);
    foreach ($field as $key) {
        if (!in_array($key, $allowedvalues)) {
            return sprintf($form->i18n('rule', 'validateoptions', 'validateoptions', $element), $key);

function pieform_rule_validateoptions_i18n() {
    return array(
        'en.utf8' => array(
            'validateoptions' => 'The option "%s" is invalid'

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