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Я работаю с довольно старыми php-скриптами, которые советуют поместить эту директиву в конфигурации nginx

 location / {
  if ($script_filename !~ "-d"){
    rewrite ^(.*)$ /index.php break;
  }
}
  

Но это вызывает ошибку на моем nginx version: nginx/1.14.0 (Ubuntu)

 Sep 14 11:19:22 pc5 systemd[1]: Starting A high performance web server and a reverse proxy server.
Sep 14 11:19:22 pc5 nginx[12497]: nginx: [emerg] unknown "script_filename" variable
Sep 14 11:19:22 pc5 nginx[12497]: nginx: configuration file /etc/nginx/nginx.conf test failed
Sep 14 11:19:22 pc5 systemd[1]: nginx.service: Control process exited, code=exited status=1
Sep 14 11:19:22 pc5 systemd[1]: nginx.service: Failed with result 'exit-code'.
Sep 14 11:19:22 pc5 systemd[1]: Failed to start A high performance web server and a reverse proxy 
~
  

Вот моя полная конфигурация сайта (выполняется на localhost)

 server {
        listen 8000;
        root /var/www/myapp;
        index index.php index.html index.htm index.nginx-debian.html;
        #server_name example.com;
        autoindex off;
 

        location / {
          if ($script_filename !~ "-d"){
          rewrite ^(.*)$ /index.php break;
           }
        }



        location ~ .php$ {
                include snippets/fastcgi-php.conf;
                fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
        }

        location ~ /.ht {
                deny all;
        }
}
  

Если я удалю эту директиву, многие пути будут недоступны, и вместо этого я получу 404.

Как вы можете видеть ниже в моем fastcgi.conf I have no параметре $script_filename`:

 fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;
fastcgi_param  REQUEST_SCHEME     $scheme;
fastcgi_param  HTTPS              $https if_not_empty;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;
  

И fastcgi-php.conf :

 # regex to split $uri to $fastcgi_script_name and $fastcgi_path
fastcgi_split_path_info ^(. .php)(/. )$;

# Check that the PHP script exists before passing it
try_files $fastcgi_script_name =404;

# Bypass the fact that try_files resets $fastcgi_path_info
# see: http://trac.nginx.org/nginx/ticket/321
set $path_info $fastcgi_path_info;
fastcgi_param PATH_INFO $path_info;

fastcgi_index index.php;
include fastcgi.conf;
  

Мне интересно, как я могу это исправить?