Using htaccess how to change the PHP website default home page ie index.php file from root folder ie "html" to sub folder(say it 'subfolder') but site should still work as before ie the home page will be from 'subfolder' but other pages will still using same old root "html" folder.
Website have SSL ie (https)
Home page Browser URL should always be https://www.mywebsite.com/
root folder is "html".
The directory path of "subfolder" is "html/subfolder", this folder only have only one file ie 'index.php'
So there should be no change in any page URL (including home page).