Is it necessary to create separate sitemaps for static and dynamic pages in PHP websites?

It is not necessary to create separate sitemaps for static and dynamic pages in PHP websites. Instead, you can generate a single sitemap that includes all relevant pages on your site, both static and dynamic. This can be achieved by dynamically generating the sitemap.xml file using PHP, which will automatically include all pages based on your website's structure and content.

<?php
// Create sitemap.xml file
$filepath = "sitemap.xml";
$fh = fopen($filepath, 'w');

// Start sitemap
fwrite($fh, '<?xml version="1.0" encoding="UTF-8"?>');
fwrite($fh, '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">');

// Add static pages
$static_pages = array("home", "about", "contact");
foreach ($static_pages as $page) {
    fwrite($fh, '<url><loc>https://www.example.com/' . $page . '</loc></url>');
}

// Add dynamic pages
// Replace this with your logic to fetch dynamic pages from a database or other source
$dynamic_pages = array("blog-post-1", "blog-post-2", "product-1");
foreach ($dynamic_pages as $page) {
    fwrite($fh, '<url><loc>https://www.example.com/' . $page . '</loc></url>');
}

// End sitemap
fwrite($fh, '</urlset>');

// Close file
fclose($fh);
?>