问题：
1.example.com使用Codeigniter为产品提供网页。
2.产品图片存在于文件夹
中/静态/电棒/
Css出现在文件夹
中/静态/ CSS /
文件夹中的js
/静态/ JS /
3.所有静态内容图像，css，js需要使用不同的子域提供
images.example.com/prods/productid.png
images.example.com/css/styles.css
images.example.com/js/script.js
4.但是如果 images.example.com/prods/productid.png
不存在，它应该提供由Codeigniter路径生成的Productimage（无重定向）
/index.php?/static/prodid.png
其中'static'是'home'控制器上的一个函数。
5.Apache 2.2
6.什么是正确的htaccess？
当前配置：
我的htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
#Render static files
RewriteCond %{HTTP_HOST} images.example.com [NC]
RewriteCond %{REQUEST_URI} !static/
RewriteCond %{DOCUMENT_ROOT}/static/%{REQUEST_URI} -f
RewriteRule ^(.*)$ /static/$1 [L]
RewriteCond %{HTTP_HOST} images.example.com [NC]
RewriteCond %{REQUEST_URI} !static/
RewriteCond %{DOCUMENT_ROOT}/static/%{REQUEST_URI} !-f
RewriteRule ^(.*)$ https://images.example.com/static/$1 [L,R=303]
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file,
#such as an image or css document, if this isn't true it sends the
#request to index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI}
</IfModule>
如果产品图片'images.example.com/prods/productid.png'不存在，则应重定向至images.example.com/index.php?/static/prods/productid.png
相反，它会重定向到https://images.example.com/static/index.php?/static/index.php
您需要的任何想法或输入？