Here is the rule in English:
Any HTTP request other than those for index.php, assets folder, files folder and robots.txt is treated as a request for your
Please try this. It works for me.
server {
server_name domain.tld;
root /var/www/codeignitor;
index index.html index.php;
# set expiration of assets to MAX for caching
location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {
expires max;
log_not_found off;
}
location / {
# Check if a file or directory index file exists, else route it to index.php.
try_files $uri $uri/ /index.php;
}
location ~ \.php$ {
try_files $uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}