90 lines
2.4 KiB
PHP
90 lines
2.4 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Validate
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* @subpackage Sitemap
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Changefreq.php 17470 2009-08-08 22:27:09Z thomas $
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*/
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/**
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* @see Zend_Validate_Abstract
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*/
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require_once 'Zend/Validate/Abstract.php';
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/**
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* Validates whether a given value is valid as a sitemap <changefreq> value
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*
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* @link http://www.sitemaps.org/protocol.php Sitemaps XML format
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*
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* @category Zend
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* @package Zend_Validate
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* @subpackage Sitemap
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Validate_Sitemap_Changefreq extends Zend_Validate_Abstract
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{
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/**
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* Validation key for not valid
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*
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*/
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const NOT_VALID = 'invalidSitemapChangefreq';
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/**
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* Validation failure message template definitions
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*
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* @var array
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*/
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protected $_messageTemplates = array(
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self::NOT_VALID => "'%value%' is not a valid sitemap changefreq",
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);
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/**
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* Valid change frequencies
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*
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* @var array
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*/
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protected $_changeFreqs = array(
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'always', 'hourly', 'daily', 'weekly',
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'monthly', 'yearly', 'never'
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);
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/**
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* Validates if a string is valid as a sitemap changefreq
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*
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* @link http://www.sitemaps.org/protocol.php#changefreqdef <changefreq>
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*
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* @param string $value value to validate
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* @return boolean
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*/
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public function isValid($value)
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{
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$this->_setValue($value);
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if (!is_string($value)) {
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return false;
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}
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if (!in_array($value, $this->_changeFreqs, true)) {
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$this->_error(self::NOT_VALID);
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return false;
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}
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return true;
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}
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}
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