How to redirect all HTTP requests to HTTPS

Question

I\'m trying to redirect all insecure HTTP requests on my site (e.g. http://www.example.com) to HTTPS (https://www.example.com). I\'m using PHP btw.

Answer 1

I found out that the best way for https and www on domain is

RewriteCond %{HTTPS} off 
RewriteCond %{HTTPS_HOST} !^www.example.com$ [NC]
RewriteRule ^(.*)$ https://www.example.com/$1 [L,R=301]