[eluser]WanWizard[/eluser]
Difference between this and what?
PHP4 style contructors (function name = class name) and PHP5 constructors (__construct)? If you are calling a parent method (any method), you simply have to use the correct name.
In 'old' CI, PHP4 style was used, and you had to use parent::CI_Controller(), in CI 2+, you need to use parent::__construct().