function __get($key)
{
if (empty($this->{$key})) {
switch ($key) {
case 'email':
$this->{$key} = LP_Email::instance();
break;
case 'checkout':
$this->{$key} = LP_Checkout::instance();
break;
case 'course':
if (is_course()) {
$this->{$key} = LP_Course::get_course(get_the_ID());
}
break;
case 'quiz':
if (is_quiz()) {
$this->{$key} = LP_Quiz::get_quiz(get_the_ID());
}
break;
}
}
return !empty($this->{$key}) ? $this->{$key} : false;
}
