Citation:
The .htaccess file can also be used to force HTTPS on specific folders. However, the file should be placed in the folder that will have the HTTPS connection.
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(folder1|folder2|folder3) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
Make sure to change the folder references to the actual directory names.
After making the changes, clear your browser’s cache and try to connect to your site via HTTP. If everything was added correctly, the browser will redirect you to the HTTPS version
C'est ici :