How can PHP developers effectively utilize mod_rewrite in .htaccess files to improve URL structure and SEO?

To improve URL structure and SEO, PHP developers can utilize mod_rewrite in .htaccess files to create clean, user-friendly URLs that are also search engine friendly. This can be achieved by rewriting dynamic URLs to static URLs that include relevant keywords and are easier for both users and search engines to understand. ```apache RewriteEngine On RewriteRule ^products/([0-9]+)/?$ product.php?id=$1 [NC,L] ```