.htaccess - redirect non-www to www resulting in loop address -

i'm configuring website redirect non-www www, resulting in address loop this:

abc.com/www.abc.com/index.php/www.abc.com/index.php/www.abc.com/index.php/www.abc.com/index.php/www.abc.com/index.php ... , on 

below .htaccess file. can me spot error?

<ifmodule mod_rewrite.c> rewriteengine on rewritebase /  rewritecond %{request_uri} ^system.* rewriterule ^(.*)$ /index.php?/$1 [l]  rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewritecond %{request_uri} !^(/index\.php|/assets|/robots\.txt|/favicon\.ico) rewriterule ^(.*)\.html$ /index.php/$1 [l]  rewritecond %{request_filename} !-f rewritecond %{request_filename} !-d rewritecond %{request_uri} !^(/index\.php|/assets|/robots\.txt|/favicon\.ico) rewriterule ^(.*)$ /index.php/$1 [l]  rewritecond %{http_host} !^www\. rewriterule ^(.*)$ www.%{http_host}/index.php/$1 [r=301,l] </ifmodule>  <ifmodule !mod_rewrite.c> errordocument 404 /index.php </ifmodule> 

many thanks,

rewriterule ^(.*)$ www.%{http_host}/index.php/$1 [r=301,l]                    ^--- 

you forgot prefix hostname http://, apache's rewriting local url

try

rewriterule ^(.*)$ http://www.%{http_host}/index.php/$1 [r=301,l] 

instead.

it's same rules apply to:

<img src="www.example.com/kittens.jpg" /> <img src="http://www.example.com/kittens.jpg" />