application flow

• index.php (system gateway) include a configuration file and the rpd superclass
• the superclass include and instance a controller, then invoke one of its methods (following the requested uri)
• the method call a view to send an output

use case

• user request http://myhost/welcome/
• apache parse .htaccess in application root then call index.php if /controller/method/ isn't a valid file or folder
• index include framework files, then the application controller: /controllers/welcome.php
• superclass instance "Welcome" class then invoke $welcome->index()
• index method call a view (include a php-html file and print an output)