nginx.conf File For ExpressionEngine or Codeigniter

nginx.conf

server {
	listen	:80;
	server_name www.example.com;
	rewrite ^/(.*) http://example.com/$1 permanent;
}

server {
	server_name example.com;
	listen :80;
	
	root /srv/www/example.com/public;
 
	access_log /srv/www/example.com/logs/access.log;
	error_log /srv/www/example.com/logs/error.log;
 
	index index.html index.php;

	location / { 
		try_files $uri $uri/ @rewrites;
	}
 
	location @rewrites {
		rewrite ^ /index.php last;
	}
 	
    if ($request_uri ~* ^(/site(/index)?|/index(.php)?)/?$)
    {
        rewrite ^(.*)$ / permanent;
    }
 
    # removes trailing "index" from all controllers
    if ($request_uri ~* index/?$)
    {
        rewrite ^/(.*)/index/?$ /$1 permanent;
    }
 
    # removes trailing slashes (prevents SEO duplicate content issues)
    if (!-d $request_filename)
    {
        rewrite ^/(.+)/$ /$1 permanent;
    }
	
	# removes access to "system" folder, also allows a "System.php" controller
	if ($request_uri ~* ^/system)
	{
	 rewrite ^/(.*)$ /index.php?/$1 last;
	 break;
	}
	
	location ~* \.(?:ico|css|js|gif|jpe?g|png)$ {
		expires max;
		add_header Pragma public;
		add_header Cache-Control "public, must-revalidate, proxy-revalidate";
	}
	
	location = /robots.txt  { access_log off; log_not_found off; }
	location = /favicon.ico { access_log off; log_not_found off; }	
 
	location ~ /\.          { access_log off; log_not_found off; deny all; }
	
	location ~ \.php {
		try_files $uri =404;
		fastcgi_index index.php;
		fastcgi_pass php5-fpm-sock;
		fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
		include /etc/nginx/fastcgi_params;
	}
}