apache+codeigniter 通过.htcaccess做动态二级域名解析

　　AuthName "yousite Website Coming Soon..." //如果你想给你的网站加个权限访问

　　AuthType Basic

　　AuthUserFile D:/xxx/.htpasswd #如果你想设置密码访问 如何生成.htpasswd可以访问 http://www.htaccesstools.com/htpasswd-generator/

　　#AuthGroupFile /dev/null

　　require valid-user

　　<IfModule mod_rewrite.c>

　　RewriteEngine On

　　RewriteBase /

　　#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]

　　<IfModule mod_proxy.c>

　　# Redirect to boutique (with any trailing path)

　　RewriteCond %{HTTP_HOST} !^www. [NC]

　　RewriteCond %{HTTP_HOST} ^([^.]+).yousite.com(.*)$ [NC]

　　RewriteRule ^(.*)$ http://www.yousite.com/boutique/$1$2 [P,L]

　　</IfModule>

　　<IfModule !mod_proxy.c>

　　# Redirect to boutique (with any trailing path)

　　RewriteCond %{HTTP_HOST} !^www. [NC]

　　RewriteCond %{HTTP_HOST} ^([^.]+).yousite.com(.*)$ [NC]

　　RewriteRule ^(.*)$ http://www.yousite.com/boutique/%1/$1 [R=301,L]

　　</IfModule>

　　## Otherwise, force www;

　　RewriteCond %{HTTP_HOST} ^yousite.com$ [NC]

　　RewriteRule ^(.*)$ http://www.yousite.com/$1 [R=301,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]

　　</IfModule>

　　<IfModule !mod_rewrite.c>

　　# If we don't have mod_rewrite installed, all 404's

　　# can be sent to index.php, and everything works as normal.

　　# Submitted by: ElliotHaughin

　　ErrorDocument 404 /index.php

　　</IfModule>