RewriteEngine for subdomains

Question

linux

Good afternoon.
Using the example of the article ( How to make subdomains using .htaccess and Apache settings, namely Server Alias ​​*test.ru? ) I am trying to configure RewriteEngine to support subdomains, for example:

aaa.test.su/news/123 -> /home/test/public_html/index.php?domain=aaa&news/123
abc.test.su -> /home/test/public_html/index.php?domain=abc
aaa.test.su -> /home/test/public_html/index.php?domain=aaa

Tell me how to do it right, because the config below returns a 400 error (Bad Request)

<VirtualHost *>

        ServerAdmin [email protected]
        ServerName test.su
        DocumentRoot /home/test/public_html/

        ServerAlias *.test.su
        RewriteEngine On
        RewriteCond %{HTTP_HOST} ^([0-9a-zA-Z_\-]+)\.test\.su$
        RewriteRule ^(.*)$ index.php?domain=$1 [L]

        <Directory /home/test/public_html>
                AddDefaultCharset utf-8
                AllowOverride None
        </Directory>

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>

Answer 1

$1 is for the one found in the RewriteRule, and the one found in the RewriteCond needs %1.