<IfModule mod_rewrite.c>
   RewriteEngine on 
   RewriteCond %{HTTP_HOST} ^xiajiong.com 
   RewriteRule ^(.*)$ http://www.xiajiong.com/$1 [R=permanent,L]
   
   RewriteCond %{HTTP_HOST} ^(?![www|m])(.*).xiajiong.com 
   RewriteRule ^(.*)$ http://www.xiajiong.com/$1 [R=permanent,L]

   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteRule ^(.*)$ index.php/$1 [QSA,PT,L]
</IfModule>

