Checking if a string is empty?

@lexxtoronto

I would recommend you not to work everywhere with the session directly, hide these implementation details within a class and then use it this way:

Code:

if ($this->auth->is_logged_in()) {
    // Do this.
} else {
    // Do that.
}

Thus, when the time comes for a upgrade you will have limited number of places to check for compatibility (FALSE -> NULL on nothing).