.htaccess Redirect non-WWW to WWW preserving URI string

Question

I'm running the CodeIgniter platform, which uses .htaccess to accept URLs like

http://www.mysite.com/controller/function/argument

I currently use some .htaccess rewrites, namely (simplified):

RewriteEngine On
RewriteCond %{REQUEST_URI} !^(/index\.php|/images|/assets)
RewriteRule ^(.*)$ /index.php/$1 [L]

I want to add a rewrite rule that redirects all non www requests to www. I also want the URI string following the domain name to stay the same in the redirect. For instance, if a user makes a request for http://mysite.com/controller/function/argument, I want the .htaccess file to rewrite the request in the browser as http://www.mysite.com/controller/function/argument and then process the request.

score 14 · Answer 1 · answered Nov 07 '09 at 02:04

14

I had a similar problem, and this .htaccess works for me

RewriteEngine On                           

#This bit rewrites your host name to include www
RewriteCond %{HTTP_HOST} !^www\.example\.com [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,NC,L]

#This bit does the codeigniter magic
RewriteCond %{REQUEST_FILENAME} !-f  
RewriteCond %{REQUEST_FILENAME} !-d  
RewriteRule ^(.*)$ /index.php/$1 [L]

answered Nov 07 '09 at 02:04

ekhaled

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it's working. What if I want to add rule except blog.example.com is not redirected to www? – Permana Jul 08 '13 at 07:16
try `RewriteCond %{HTTP_HOST} !^(www|blog)\.example\.com [NC]` – ekhaled Aug 23 '13 at 11:42

score 10 · Accepted Answer · edited Jul 23 '14 at 11:31

10

It should be something like this:

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

edited Jul 23 '14 at 11:31

Hristo Valkanov

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answered Nov 06 '09 at 07:52

rossoft

2,182
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This won't interfere with my second RewriteRule right? I understand your RewriteCond, I don't want to apply to the rules I already have. – Steven Nov 06 '09 at 08:14
If you add mine as the first one, it will only be activated if the host is not www.mysite.com. If it is activated, there will be a redirect HTTP, and the second HTTP query will activate your own rewrite if the conditions are met – rossoft Nov 06 '09 at 08:36
@Steven Xu, RewriteConds only apply to the next immediate RewriteRule. – Jeremy Stein Nov 06 '09 at 15:26

score 0 · Answer 3 · answered Feb 03 '17 at 16:45

0

If you are on apache 2.4 ,You can use the following simple redirect :

<if "%{HTTP_HOST} =='example.com'">
Redirect / http://www.example.com/
</if>

answered Feb 03 '17 at 16:45

Amit Verma

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93
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.htaccess Redirect non-WWW to WWW preserving URI string

3 Answers3

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