Php and Mysql are a great combo for a new web service. The website being in PHP is incredibly scalable and robust with features while the MySQL is the brain behind the operation. The database will act as an information highway, letting you the choose how information gets populated and where it goes and finally what it does. This option is great for people who want to create a brand new service and have it reach thousands of people without crashing and everyone having a great experience. Also using this option what ever idea you have for your service in your head, we can bring to life through PHP/MySQL.