PHP, how to effectively use the functions in a class -

i using codeigniter framework. let had controller class named myclass, class have function want access controller class.

i got troubled when access function controller class, cant create instant of myclass class, class 'myclass' not found. dont want use include 'myclass.php'; because class myclass have __constructor method, afraid content inside __constructor method conflict __constructor.

what best solution case?

thanks

codeigniter framework has way automatically loading custom classes. here: http://www.codeigniter.com/userguide2/general/autoloader.html

just make possible framework auto-load class(es) , problem solved.