Redirect domain to https, subdomain to https and non-www to www

.htaccess

# Redirect domain to https, subdomain to https and non-www to www
# http://stackoverflow.com/questions/37614937/htaccess-redirect-domain-to-https-subdomain-to-https-and-non-www-to-www

RewriteEngine on 

# redirect no-www to www only main domain, not with subdomain
RewriteCond %{HTTP_HOST} ^(domain\.com)$ [NC]
RewriteRule ^ https://www.%1%{REQUEST_URI} [R=301,L]

# redirect http to https all domain
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]