How do I add PHP code/file to HTML(.html) files?

Question

I can\'t use PHP in my HTML pages. For example, index.html. I\'ve tried using both:

and

Answer 1

I think writing PHP into an .html file is confusing and anti-natural. Why would you do that??

Anyway, if what you want is to execute PHP files and show them as .html in the address bar, an easiest solution would be using .php as normal, and write a rule in your .htaccess like this:

RewriteRule ^([^.]+)\.html$ $1.php [L]