.htaccess automatic redirect to one domain - .htaccess

Question

What I try is to redirect (if you type it directly into the addressbar) to https://example.com
thus
http://www.example.com -> https://example.com
https://www.example.com -> https://example.com
example.com -> https://example.com
www.example.com -> https://example.com
I tried already (and other lots of other ways):
RewriteCond %{SERVER_PORT} ^80$
RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
RewriteRule ^(.*)$ https://example.com/$1 [R=301,L]
RewriteCond %{SERVER_PORT} ^443$
RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
RewriteRule ^(.*)$ https://example.com/$1 [R=301,L]
So
http://www.example.com
https://www.example.com
www.example.com
will all redirect to https://example.com
BUT example.com will not automatic redirect to https://example.com
How can i acomplish that?

Answer 1

You can use an OR condition to match against both requests www or http and redirect it to https://non-www
RewriteCond %{HTTPS} off [OR]
RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
RewriteRule ^(.*)$ https://example.com/$1 [R=301,L]

Answer 2

I think #starkeen s' way will work... but not when you're using Cloudflare!! The solution for people who using Cloudflare:
Force HTTPS By default CloudFlare HTTPS doesn't force all the traffic
to HTTPS. To force HTTPS do the following:
Go to your websites Click on the gear icon and select "Page rules"
Enter your website in the URL pattern input Toggle the "Always use
HTTPS" switch Click on "Add rule" at the bottom By doing this all the
traffic of your website will use HTTPS. When someone access your
website using HTTP, CloudFlare will redirect those request to HTTPS.
It worked for me.