NGINX: Handle request with different PHP version driven by the URI resource name

server.sh

location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
        fastcgi_index index.php;
        include fastcgi_params;
    }

    location ^~ /endpoint {
            alias /home/www/html;
            try_files $uri $uri/ @nested;
            location ~ \.php {
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                include fastcgi_params;
                fastcgi_index index.php;
                fastcgi_param SCRIPT_NAME "/index.php";
                fastcgi_param DOCUMENT_URI "/index.php";
                fastcgi_param SCRIPT_FILENAME $request_filename;
                fastcgi_param PATH_INFO       $fastcgi_path_info;
                fastcgi_pass unix:/run/php/php7.2-fpm.sock;
          }
    }

    location @nested {
       rewrite /endpoint/(.*)$ /endpoint/index.php?/endpoint/$1 last;
    }

Nice! How does that "location@nested" block work?

It rewrites the URI and places any extra parameter in the query_string component of the URI.