Redirect Non-WWW to WWW URLs

8
votes

When people access my domain it is redirected to http://www.mydomain.com/en/index.php using php code.I added the following code in .htaccess

RewriteEngine on
Options +FollowSymlinks

RewriteBase /
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
RedirectPermanent /pages/abc-123.html http://www.mydomain.com/en/page-a1/abc.php

to redirect people from non www to www,

Still users can access by typing both http://mydomain.com/en/page-a1/abc.php and http://www.mydomain.com/en/page-a1/abc.php URLs

Does anyone know the method to completely redirect to http://www.mydomain.com/en/page-a1/abc.php even if user typed http://www.mydomain.com/en/page-a1/abc.php, and prohibit accessing URLs without www.

6
phpapache.htaccessredirect
The idea of that rewrite is to redirect user to www if he comes to non-www. So non-www is still accessible, but tells browser to redirect to www and keep that url in the cache, as this is permanent (301) redirect. So, from user's point of view, when he is accessing domain.com, browser automatically redirects to www.domain.com. Do your users see domain.com in browser's address bar? - J0HN
No, user wont see domain.com, but he can open mydomain.com/en/page-a1/abc.php page in the browser. - Ullas Prabhakar
And what do you want to do? Prohibit the user typing that URL in browser?:) If you want to deny domain.com service at all, just redirect it to 404 page, with something like RewriteRule ^(.*)$ 404.php [L] - J0HN
Possible duplicates: stackoverflow.com/questions/4042309/www-and-non-www-sites, stackoverflow.com/questions/1685962/…, stackoverflow.com/questions/1100343/…, stackoverflow.com/questions/3707319/…, etc - goodeye

6 Answers

13
votes
$protocol = (@$_SERVER["HTTPS"] == "on") ? "https://" : "http://";

if (substr($_SERVER['HTTP_HOST'], 0, 4) !== 'www.') {
    header('Location: '.$protocol.'www.'.$_SERVER['HTTP_HOST'].'/'.$_SERVER['REQUEST_URI']);
    exit;
}

in php

4
votes

I'm not sure how to do it through .htaccess, but I do it with PHP code myself within my config.php which is loaded for every file.

if(substr($_SERVER['SERVER_NAME'],0,4) != "www." && $_SERVER['SERVER_NAME'] != 'localhost')
    header('Location: http://www.'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);

EDIT: @genesis, you are correct I forgot about https

Change

header('Location: http://www.'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);

to

header('Location: '.
       (@$_SERVER['HTTPS'] == 'on' ? 'https://' : 'http://').
       'www.'.$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);
4
votes
<?php
$protocol = (@$_SERVER["HTTPS"] == "on") ? "https://" : "http://";
if (substr($_SERVER['HTTP_HOST'], 0, 4) !== 'www.') {
    header('Location: '.$protocol.'www.'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']);
    exit;
}
?>

Working Properly

2
votes

Add RewriteEngine On before RewriteCond to enable your rewrite rules:

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

And if you have https:

RewriteEngine On

RewriteRule .? - [E=PROTO:http]

RewriteCond %{HTTPS} =on
RewriteRule .? - [E=PROTO:https]

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$  %{ENV:PROTO}://www.%{HTTP_HOST}/$1 [R=301,L]
0
votes

I think you want to redirect the user instead of rewriting the URL, in that case use Redirect or 'RedirectMatch` directive. http://httpd.apache.org/docs/2.3/rewrite/remapping.html#old-to-new-extern

0
votes
Redirect 301 /pages/abc-123.html http://www.mydomain.com/en/page-a1/abc.php

<IfModule mod_rewrite.c>
Options +FollowSymlinks
RewriteEngine on

# mydomain.com -> www.mydomain.com
RewriteCond %{HTTP_HOST} ^mydomain.com
RewriteRule ^(.*)$ http://www.mydomain.com/$1 [R=301,L]
</IfModule>