My site is an e-commerce site. All URLs are dynamic, like "my_domain/a.php", "my_domain/a.php?id=1", "my_domain/b.php", "my_domain/b.php?id=3", etc.
I want static URLs like "my_domain/a.html","my_domain/b.html","my_domain/c.html", "my_domain/d.html", etc.
I am little weak in the .htaccess file. What do I add to my .htaccess file o achieve that result?