Okay, so the title is a little misleading.

I have fully installed WP on my server, but when I try to connect to it, it just downloads the index.php file, and doesn’t actually run the website. I have ensured that it is executable.

server {
        listen   80 default_server; ## listen for ipv4; this line is default and implied
        #listen   [::]:80 default_server ipv6only=on; ## listen for ipv6

        root /var/www/html;
        index index.php index.html index.htm;

        # Make site accessible from http://localhost/
        server_name localhost;

        location / {
                # First attempt to serve request as file, then
                # as directory, then fall back to displaying a 404.
                try_files $uri $uri/ /index.php?q=$uri&$args;
                # Uncomment to enable naxsi on this location
                # include /etc/nginx/naxsi.rules

This is the only thing I have changed, the rest is default nginx config.

One thing at a time, I’ll be asking further questions soon.

P.S. there is no errors in the log.