CODE EXAMPLE FOR PHP

htaccess redirect to https

RewriteEngine On
RewriteBase /
RewriteCond %{HTTPS} !=on
RewriteCond %{HTTP_HOST} ^yourdomain.com [OR]
RewriteCond %{HTTP_HOST} ^www.yourdomain.com
RewriteRule .* https://yourdomain.com%{REQUEST_URI} [R=301,L]