How to Remove index.php from URL in .htaccess

Step 1. Enable mod_rewrite on your Apache web server.

Step 2. Create .htaccess file in root directory.

Step 3. Remove index.php by htaccess
   <IfModule mod_rewrite.c>
         RewriteEngine on
         RewriteCond %{HTTP_HOST} !^www\.yourdomain\.com [NC]
         RewriteRule ^(.*)$ http://www.yourdomain.com/$1 [R=301,NC,L]
         RewriteCond %{REQUEST_FILENAME} !-f
         RewriteCond %{REQUEST_FILENAME} !-d
         RewriteRule .* index.php/$0 [PT,L]
   </IfModule>

Step 4. Restart Apache Server  
        sudo service apache2 restart