.htaccess 配置

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# protect xmlrpc
<Files xmlrpc.php>
    Order Deny,Allow
    Deny from all
</Files>

wordpress Code

<?php
  setcookie("C_language","en",time()+31536000,"/");
  header("Location: http://www.website.com");
?>

en.php Code

.htaccess内容如下

#### Rewrite Browser Germany Language
RewriteCond %{HTTP_COOKIE} !.*C_language.*     //不存在cookie
RewriteCond %{HTTP:Accept-Language} ^de [NC]   //浏览器为DE语
RewriteRule ^$ http://www.website.com/de [R=302,L]   

RewriteCond %{HTTP_COOKIE} ^C_language=de [NC]    //cookie 为de语
RewriteRule ^$ http://www.website.com/de [R=302,L]

.htaccess Code

代码解释：
初次进入网站，不存在C_language，浏览器为DE语，会打开www.website.com/de/页面
初次进入网站，不存在C_language，浏览器为EN语，会打开www.website.com
若用户点击了EN / CN 切换按钮，会生成C_language的Cookie，若Cookie为DE，进入www.website.com/de/页面。反之进入www.website.com
之后的用户访问均会根据Cookie做相对应的跳转

B、跳转到CDN下载服务器做转换
RewriteCond %{REQUEST_URI} Download_File_For_.*\.exe$
RewriteRule ^(.*) http://cdn.website.com/$1 [L,R=permanent]
下载服务器：
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule Download_File_For_.*\.exe$ File_Setup.exe

代码解释
所有用户下载Download_File_For_***.exe的文件，文件名会是Download_File_For_***.exe，真实的文件确是File_Setup.exe