How to load database as run time?

[eluser]Amit Patel[/eluser]
Hello All

How can i configure database information runtime means i have to change the database at run time the db info coming from database so how can i switch database at run time.

can i use something this way

Code:

config['hostname']= ****
config['username']= ****
config['passowrd']= ****


$this->load->database($config)

I don't know how to use it plz help me