htaccess rewriting subdomain to a folder - apache

Question

I want to rewrite my main domain to a path and if no query is appended then to a different path. I have a wildcard C name in place to support subdomains.
www.xxx.com => works normally
abc.xxx.com => point to a folder
abc.xxx.com/abc-xyz => point to www.xxx.com and should work normally
This is what i have right now :
<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{HTTP_HOST} !^([w]{3,3}[.]{1,1}){0,1}example.com$
RewriteCond %{HTTP_HOST} ^([0-9a-zA-Z-]*)[.]example.com$
RewriteRule ^$ portfolio/index.php?pageDetailId=%1 [NC,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
RewriteCond %{HTTP_HOST} !^([w]{3,3}[.]{1,1}){0,1}example.com$
RewriteCond %{HTTP_HOST} ^([0-9a-zA-Z-]*)[.]example.com$
RewriteRule ^(.*)$ $1?pageDetailId=%1 [QSA,L]
</IfModule>
As we can see, i need that abc as variable in abc.example.com/abc-xyz. Please reply with doubts with any, i tried many ways its not working. This same htaccess works on 1 domain smoothly but when i created a new domain its not working on that. Thanks.
NOTE: It works on httpd but not on apache2

Answer 1

Have it like this:
Options +FollowSymlinks
RewriteEngine On
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteCond %{HTTP_HOST} ^(?!www\.)([\w-]+)\.example\.com$ [NC]
RewriteRule ^(index\.php)?$ portfolio/index.php?pageDetailId=%1 [NC,L,QSA]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteCond %{HTTP_HOST} ^(?!www\.)([\w-]+)\.example\.com$ [NC]
RewriteRule ^(.+)$ index.php?pageDetailId=%1&/$1 [L,QSA]
RewriteRule ^(.*)$ index.php?/$1 [L,QSA]