.htaccess www a bez www přesměrování

# presmerovani bez www na verzi s www
RewriteCond %{HTTP_HOST} !^www\.(.*)
RewriteRule (.*) http://www.%{HTTP_HOST}/$1 [R=301,L]

# presmerovani s www na bez www
RewriteCond %{HTTP_HOST} ^www\.(.*)
RewriteRule (.*) http://%1/$1 [R=301,L]

# presmerovani s www na bez www
RewriteCond %{HTTP_HOST} ^www\.([^.]+)\.example\.com [NC]
RewriteRule ^(.*)$ http://%1.example.com/$1 [R=301,L]

RewriteEngine On

# presmerovani na variantu s www cele domeny (aliasy)
RewriteCond %{HTTP_HOST} ^([^\.]*)\.([^\.]*)$
RewriteRule (.*) http://www.%1.%2/$1 [L,R=301]
  
# presmerovani na variantu bez www subdomeny
RewriteCond %{HTTP_HOST} ^www\.([^.]+)\.([^.]+)\.([^\.]*)$ [NC]
RewriteRule ^(.*)$ http://%1.%2.%3/$1 [L,R=301]

# cele domeny (aliasy)
RewriteCond %{REQUEST_URI} !^domains/
RewriteCond %{REQUEST_URI} !^/domains/
RewriteCond %{HTTP_HOST} ^(www\.)?(.*)$
RewriteCond %{DOCUMENT_ROOT}/domains/%2 -d
RewriteRule (.*) domains/%2/$1 [DPI]

# subdomeny (s nebo bez www na zacatku)
RewriteCond %{REQUEST_URI} !^subdom/
RewriteCond %{REQUEST_URI} !^/subdom/
RewriteCond %{HTTP_HOST} ^(www\.)?(.*)\.([^\.]*)\.([^\.]*)$
RewriteCond %{DOCUMENT_ROOT}/subdom/%2 -d
RewriteRule (.*) subdom/%2/$1 [DPI]

# aliasy - spravne presmerovani pri chybejicim /
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^domains/[^/]+/(.+[^/])$ /$1/ [R]

# subdomeny - spravne presmerovani pri chybejicim /
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^subdom/[^/]+/(.+[^/])$ /$1/ [R]