Sample php site map generation class

// include class
include 'SitemapGenerator.php';

// create object
$sitemap = new SitemapGenerator("https://www.ofstack.com");

// add urls
$sitemap->addUrl("http://your.ofstack.com", date('c'), 'daily', '1');
$sitemap->addUrl("http://your.ofstack.com", date('c'), 'daily', '0.5');
$sitemap->addUrl("http://your.ofstack.com", date('c'), 'daily');

// create sitemap
$sitemap->createSitemap();

// write sitemap as file
$sitemap->writeSitemap();

// update robots.txt file
$sitemap->updateRobots();

// submit sitemaps to search engines
$sitemap->submitSitemap();