.htaccess

    ##
    # Uncomment the following lines to remove "www." from the domain:
    #
    # RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
    # RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
    #
    # Uncomment the following lines to add "www." to the domain:
    #
     RewriteCond %{HTTP_HOST} ^(?!www\.)(.+)$
     RewriteRule ^ http://www.%1%{REQUEST_URI} [R=301,L]
    #
    # Aufruf über HTTPS
    #
     RewriteCond %{HTTPS} !=on
     RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
    ##

.htaccess für HTML-Seiten

Unterschied?

<IfModule mod_rewrite.c>
  RewriteEngine On

##
# Uncomment the following lines to remove "www." from the domain:
#
# RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
# RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]
#
# Uncomment the following lines to add "www." to the domain:
#
  RewriteCond %{HTTP_HOST} ^(?!www\.)(.+)$
  RewriteRule ^ http://www.%1%{REQUEST_URI} [R=301,L]
#
# Aufruf über HTTPS
#
  RewriteCond %{HTTPS} !=on
  RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
##

</IfModule>