value * * @link http://www.sitemaps.org/protocol.php Sitemaps XML format * * @category Zend * @package Zend_Validate * @subpackage Sitemap * @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com) * @license http://framework.zend.com/license/new-bsd New BSD License */ class Zend_Validate_Sitemap_Lastmod extends Zend_Validate_Abstract { /** * Regular expression to use when validating * */ const LASTMOD_REGEX = '/^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])(T([0-1][0-9]|2[0-3])(:[0-5][0-9]){2}(\\+|-)([0-1][0-9]|2[0-3]):[0-5][0-9])?$/m'; /** * Validation key for not valid * */ const NOT_VALID = 'invalidSitemapLastmod'; /** * Validation failure message template definitions * * @var array */ protected $_messageTemplates = array( self::NOT_VALID => "'%value%' is not a valid sitemap lastmod", ); /** * Validates if a string is valid as a sitemap lastmod * * @link http://www.sitemaps.org/protocol.php#lastmoddef * * @param string $value value to validate * @return boolean */ public function isValid($value) { $this->_setValue($value); if (!is_string($value)) { return false; } return @preg_match(self::LASTMOD_REGEX, $value) == 1; } }