Hello everyone,
I have a strange problem here. I just moved from apache + mod_php to nginx + php-fpm. Everything went fine except this one problem.

I have a site, let's say example.com. When I access it like `example.com?test=get_param` `$_SERVER['REQUEST_URI']` is `/?test=get_param` and there is a `$_GET['test']` also.

But when I access `example.com/ajax/search/?search=get_param` `$_SERVER['REQUEST_URI']` is `/ajax/search/?search=get_param` yet there is no `$_GET['search']` (there is no `$_GET` array at all).

I'm using Kohana framework. which routes `/ajax/search` to controller, but I've put `phpinfo()` at `index.php` so I'm checking for `$_GET` variables before framework does anything (this means that disapearing get params aren't frameworks fault).

My nginx.conf is like this

[code]
worker_processes 4;
pid logs/nginx.pid;
events {
worker_connections 1024;
}
http {
index index.html index.php;
autoindex on;
autoindex_exact_size off;
include mime.types;
default_type application/octet-stream;
server_names_hash_bucket_size 128;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log logs/access.log main;
error_log logs/error.log debug;

sendfile on;
tcp_nopush on;
tcp_nodelay off;

keepalive_timeout 2;

gzip on;
gzip_comp_level 2;
gzip_proxied any;
gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;


include sites-enabled/*;
}
[/code]



and example.conf is like this

[code]
server {
listen 80;
server_name www.example.com;
rewrite ^ $scheme://example.com$request_uri? permanent;
}




server {
listen 80;
server_name example.com;
root /var/www/example/;

location ~ /\. {
return 404;
}

location / {
try_files $uri $uri/ /index.php;
}

location ~ \.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include /usr/local/nginx/conf/fastcgi_params;
}

location ~* ^/(modules|application|system) {
return 403;
}

# serve static files directly
location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt)$ {
access_log off;
expires 30d;
}
}
[/code]



fastcgi_params is like this

[code]
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 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;


fastcgi_connect_timeout 60;
fastcgi_send_timeout 180;
fastcgi_read_timeout 180;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
fastcgi_intercept_errors on;


fastcgi_param QUERY_STRING $query_string;
fastcgi_param PATH_INFO $fastcgi_path_info;
[/code]



What is the problem here?

By the way there are few more sites on the same server, both Kohana based and plain php, that are working perfectly.

Trough error and trial i've found the answer :)
instead of
[code]
location / {
try_files $uri $uri/ /index.php;
}
[/code]
it must be
[code]
location / {
try_files $uri $uri/ /index.php?$args; #or /index.php?$query_string, mind the '?'
}
[/code]
can someone explain why my other sites or the sames site root page works without this (?$args), but this one (example.com/ajax/search?test=get_param) doesn't?