I currently have a website that I am trying to optimize in terms of SEO.
I've got the site working with URLs such as:
domain.com/?app=about
In my app, $_GET[app] is set to 'about', as expected.
Now, I want to make it so that a URL like domain.com/about is treated as if it were domain.com/?app=about.
How can I do this in an Apache .htaccess file?