If you use apache module mod_alias together with module mod_rewrite, you probably encounter “Bad Request” error if the settings are not correctly configured.
For example, if you want to make the folder “/opt/mysite_v1.2″ have the alias as “/mysite” so it can be accessed as http://www.mydomain.com/mysite. And you want to have clean url “/mysite/page1″ mapped to “/mysite/index.php?p=page1″.
To define the alias, just add the following in the httpd.conf file:
Alias /mysite/ “/opt/mysite_v1.2/”
<Directory “/opt/mysite_v1.2/”>
Options Indexes FollowSymLinks MultiViews
AllowOverride all
Order allow,deny
Allow from all
</Directory>
To allow clean URL. you need to have the following in the “.htaccess” file in the folder “/opt/mysite_v1.2″
RewriteEngine On
# Rewrite base
RewriteBase /mysite# now the rewriting rules
RewriteRule ^([0-9a-zA-Z_]+)$ index.php?p=$1
Please NOTE that “RewriteBase” Directive is very essential. Without it, you will get the well known “Bad Request” Error.
More information can be found in Apache mod_rewrite documentation.
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