谁能解释一下这一段

### Discuz!EXP Web Server Settings


Listen 8080
ServerName localhost
ServerAdmin levcn@163.com
ServerRoot "d:\hekeren\Apache2"
DocumentRoot "d:\hekeren\wwwroot"
LoadModule php5_module "d:\hekeren\PHP5\php5apache2_2.dll"
PHPIniDir "d:\hekeren\PHP5\php.ini"
<Directory "d:\hekeren\wwwroot">
Options Indexes FollowSymLinks
Order allow,deny
Allow from all
</Directory>
Alias /icons/   "d:\hekeren\Apache2\icons\"
<Directory "d:\hekeren\Apache2\icons">
Options Indexes MultiViews
AllowOverride None
Order allow,deny
Allow from all
</Directory>
NameVirtualHost *:8080
<VirtualHost *:8080>
ServerAdmin levcn@163.com
DocumentRoot "d:\hekeren\wwwroot"
ServerName *
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^(.*)/archiver/([a-z0-9-]+.html)$ $1/archiver/index.php?$2
RewriteRule ^(.*)/forum-([0-9]+)-([0-9]+).html$ $1/forumdisplay.php?fid=$2&page=$3
RewriteRule ^(.*)/thread-([0-9]+)-([0-9]+)-([0-9]+).html$ $1/viewthread.php?tid=$2&extra=page%3D$4&page=$3
RewriteRule ^(.*)/profile-(username|uid)-(.+).html$ $1/viewpro.php?$2=$3
RewriteRule ^(.*)/space-(username|uid)-(.+).html$ $1/space.php?$2=$3
</IfModule>
</VirtualHost>

设置apache的主机头虚拟主机

在httpd.conf添加如下内容：

# For VirtualHost

NameVirtualHost *

<VirtualHost *>

ServerName www.zz.cxm

DocumentRoot /usr/local/apache2/htdocs

</VirtualHost>



<VirtualHost *>

ServerName xoops.zz.cxm

DocumentRoot /usr/local/apache2/htdocs/xoops

</VirtualHost>