install coaster on win10/bitnami

i try to install coaster with help from: https://www.coastercms.org/docs/developer/install-coaster-cms-windows#php-and-composer
but the url for: https://www.webtechgadgetry.com/install-php-7-windows/
is not working.

need help in install coaster after bitnami installed on win10, and from there list of steps needed to install coaster. (bitnami has php/mysql/apache/phpadmin inside)