CodeIgniter NGINX Rewrite Rules

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;
    }
}