Redirect all URL requests to only one controller

[eluser]gRoberts[/eluser]
Ok, you are getting confused.

"The Research of PHP Development Framework Based on MVC Pattern" is telling you how to write an MVC framework, but you are using CodeIgniter to do this, even though it is already an MVC framework.

Codeigniter handles all of this for you. Best read the manual http://www.ellislab.com/codeigniter/user-guide