Codeigniter query string not working on nginx
December 15, 2014 11:42PM

recently migrate CI app from apache to nginx. in apache it was working fine without any additional rule in .htaccess.
so I have configure nginx as recommend from nginx community. but when try to access following url it gives 404 page not found error.

Appreciate if anyone can give a suggestion to fixed this.

here is the htaccess config file.
RewriteEngine On
#<Files ~ "\.xml$">
#Order allow,deny
#Deny from all
#Satisfy all
## End of deny access to extension xml files
RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR]
# Block out any script trying to base64_encode crap to send via URL
RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR]
# Block out any script that includes a <script> tag in URL
RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR]
# Block out any script trying to set a PHP GLOBALS variable via URL
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
# Block out any script trying to modify a _REQUEST variable via URL
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
# Send all blocked request to homepage with 403 Forbidden error!
RewriteRule ^(.*)$ index.php [F,L]

======nginx conf file
server {
listen 80;
root /home/ubuntu/websites/;
index index.html index.htm index.php;

location / {
try_files $uri $uri/ /index.php;
#try_files $uri $uri/ /index.php$is_args$args;
#try_files $uri /index.php$request_uri;
#try_files $uri $uri/ /index.php/$is_args$args;

if (!-e $request_filename){
rewrite ^(.*)/?$ /index.php$1 last;

location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;


======CI system/application/config/config.php ======

$config['index_page'] = "index.php";
$config['uri_protocol'] = "REQUEST_URI";

$config['enable_query_strings'] = TRUE;
$config['controller_trigger'] = 'c';
$config['function_trigger'] = 'm';
$config['directory_trigger'] = 'd';
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