Sitemap Validators

The following validators conform to the Sitemap XML protocol.

Supported options

There are no additional supported options for any of the Sitemap validators.

Changefreq

Zend\Validator\Sitemap\Changefreq validates whether a string is valid for using as a 'changefreq' element in a Sitemap XML document. Valid values are: 'always', 'hourly', 'daily', 'weekly', 'monthly', 'yearly', or 'never'.

Returns true if and only if the value is a string and is equal to one of the frequencies specified above.

Sitemap\Lastmod

Zend\Validator\Sitemap\Lastmod validates whether a string is valid for using as a 'lastmod' element in a Sitemap XML document. The lastmod element should contain a W3C date string, optionally discarding information about time.

Returns true if and only if the given value is a string and is valid according to the protocol.

$validator = new Zend\Validator\Sitemap\Lastmod();

$validator->isValid('1999-11-11T22:23:52-02:00'); // true
$validator->isValid('2008-05-12T00:42:52+02:00'); // true
$validator->isValid('1999-11-11'); // true
$validator->isValid('2008-05-12'); // true

$validator->isValid('1999-11-11t22:23:52-02:00'); // false
$validator->isValid('2008-05-12T00:42:60+02:00'); // false
$validator->isValid('1999-13-11'); // false
$validator->isValid('2008-05-32'); // false
$validator->isValid('yesterday'); // false

Loc

Zend\Validator\Sitemap\Loc validates whether a string is valid for using as a 'loc' element in a Sitemap XML document. This uses Zend\Uri\Uri::isValid() internally.

Installation requirements

Zend\Validator\Sitemap\Loc depends on the zend-uri component, so be sure to have it installed before getting started:

$ composer require zendframework/zend-uri

Priority

Zend\Validator\Sitemap\Priority validates whether a value is valid for using as a 'priority' element in a Sitemap XML document. The value should be a decimal between 0.0 and 1.0. This validator accepts both numeric values and string values.

$validator = new Zend\Validator\Sitemap\Priority();

$validator->isValid('0.1'); // true
$validator->isValid('0.789'); // true
$validator->isValid(0.8); // true
$validator->isValid(1.0); // true

$validator->isValid('1.1'); // false
$validator->isValid('-0.4'); // false
$validator->isValid(1.00001); // false
$validator->isValid(0xFF); // false
$validator->isValid('foo'); // false