PHP, MySQL, Drupal, .htaccess, Robots.txt, Phponwebsites: How to redirect to www using .htaccess

27 Nov 2013

How to redirect to www using .htaccess

                       Type your domain name without www in address bar. Check whether it redirects to your site or give a 301 error message. If you got 301 error message, then you will solve this problem using .htaccess.

Syntax:
              RewriteEngine On
              RewriteCond %(HTTP_HOST) ! ^www.domainname.com$ [NC]
              RewriteRule ^(.*)$ http://www.domainname.com/$1 [L, R=301]

Explanation:
              Where,
                          .htaccess force the all http requests to use either www.domainname.com or domainname.com .
                           HTTP_HOST - represents your domain name.
                           RewriteCond   - check the conditions if you typed domain name is not start with www, it 
redirect to next rewrite rule. 
                           ! ^www.domainname.com$ - means you typed domain name is not start with www.
                           NC - represents not case sensitive.
                           RewriteRule - means it redirect domain name without www to http://www.doaminname.com.
                           ^ - starting
                           .* - one or more characters.
                           $ - ending
                           L - if rule matches, don't process any other rewrite rules below this one.

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