How to Use Index.Php Instead of Index.Html. The PHP engine lets you create dynamic Web pages. PHP also reads HTML, so you can save an HTML file with a PHP extension and upload the new file to your ...

One of PHP's strengths is the ability to easily inject variables, values and attributes into HTML code to create dynamic Web pages.

Here's a quick tutorial on how to setup Nginx with PHP support. The key? The installation of fastCGI, aka PHP-FPM, so Nginx can serve PHP files to clients.