Symfony2 nginx issue - all pages 404 not found - php

Question

I've got problem with my project in symfony2 when i'm trying to run this on nginx.
www.domain/ works fine
www.domain/app_dev.php ，"An error occurred while loading the web debug toolbar (404: Not Found).Do you want to open the profiler?"
www.domain/app.php/someurl/ - 404 not found
Is it server configuration issue or should I change my .htaccess in some way to make it possible to run with nginx?

Answer 1

You can check my dev config (with PHP-FPM):
server {
listen 80;
server_name dev.example.com;
root /var/www/web;
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log error;
index app.php index.html index.htm;
try_files $uri $uri/ #rewrite;
location #rewrite {
rewrite ^/(.*)$ /app.php/$1;
}
location ~ \.php(/|$) {
# try_files $uri =404;
fastcgi_index app.php;
fastcgi_pass unix:/var/run/php5-fpm.sock;
include fastcgi_params;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_param PATH_INFO $fastcgi_path_info;
fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_buffer_size 1280k;
fastcgi_buffers 4 2560k;
fastcgi_busy_buffers_size 2560k;
}
location ~ /\.ht {
deny all;
}
}