I'm about to install a old web app that requires PHP4/MySQL4 on a new Debian 7 server. The app is not mantained anymore, the original author has a new job and no chance to migrate it to PHP5/Mysql 5. Nevertheless the app works and it is very useful for my customer.
I plan to install XAMPP 1.4.16, e.g. the last one providing PHP4 and MySQL4. However XAMPP 1.4.16 has both PHP4 and PHP5, with PHP5 being the default. How do I make it use PHP4 by default instead?