how redirect no-www url to www url in laravel?

Question

i had tried bellow code in my .htaccess file

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews
    </IfModule>

    RewriteEngine On

    # Redirect Trailing Slashes...
    RewriteRule ^(.*)/$ /$1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]


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

</IfModule>

the prblem is that, when ever i hits example.com it redirect me to www.example.com but when i hit example.com/ppl2016 it will redirect me to www.example.co./index.php

i had review this http://stackoverflow.com/questions/26549482/how-can-redirect-domain-non-www-to-www-in-laravel-4 but it wont help me.