PHP CI框架下，如果配置NGINX（根目录和子目录两种模式）

location ~ \.php($|/) {
            root           html;
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_split_path_info ^(.+\.php)(.*)$;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            fastcgi_param  SCRIPT_FILENAME   $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }

        if (!-e $request_filename) {
            rewrite ^(.*)$ /$1 last;
            break;
        }

location /CI/ {
            if (!-e $request_filename) {
                rewrite ^/CI/(.*)$ /CI/index.php/$1 last;
                break;
            }
         }
        location /CI/index.php {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_split_path_info ^(.+\.php)(.*)$;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            fastcgi_param  SCRIPT_FILENAME   $document_root$fastcgi_script_name;
            include        fastcgi_params;
        }