Gfilui

At my hosting control panel I set up my server api for server name (let it be dev.domainname.com).

dev.domainname.com config:

server 
 listen 80;
 #listen [::]:80;

 root /var/www/dev.domainname.com/public;

 # Add index.php to the list if you are using PHP
 index index.php index.html index.htm index.nginx-debian.html;

 server_name dev.domainname.com;

 location / 
 try_files $uri $uri/ =404;
 

After I open dev.domainname.com brower receive a file called "download". Actually I checked that file - it is my index.php inside /public.

What's wrong?

Some additional info: I've installed SSL-certificate using certbot. https://dev.domainname.com isn't available too, I got ERR_CONNECTION_TIMED_OUT.

sudo tail -n 20 /var/log/nginx/error.log doesn't have any errors for the last hour.

hosts file contains one row:

127.0.0.1 domainname domainname

sudo nginx -t is also ok.

You need to tell nginx how to deal with php files. I create a "macro" which is simply a file containing the following:

location ~ .php$ 
 fastcgi_param PHP_VALUE "display_errors=Off";
 fastcgi_split_path_info ^(.+.php)(.*)$;
 include fastcgi.conf;
 fastcgi_send_timeout 600;
 fastcgi_pass unix:/run/php/php7.2-fpm.sock;

I then store that in /etc/nginx/macros and include it with

include macros/php;