php pages with htaccess redirect not working

Question

I'm trying to redirect non-www to www on my php site and keep urls clean without having to link to .php pages.

When I employ a suggested redirect for non-www to www below, the page links no longer go to proper pages. For example: I have a page1.php and when I link to domain.com/page1 (without .php) that page will no longer load. How can I fix this? Do I have to modify all links and add page extention (.php) for links to work?

htaccess I'm using:

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]

Answer 1

I found the answer!

RewriteEngine On
RewriteBase /
#Rewrite bare to www
RewriteCond %{HTTP_HOST} ^example.com [NC] 
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}\.php -f
RewriteRule ^(.*)$ $1.php [NC,L]