How to access a function of a parent class ?

[jd2007]

if i access a function of a class, i do this :

 

$x=new Class;
$x->function();

 

how do access a function of a parent class ?..let's say, class "Class" has a parent class "Parent" and "Parent" has a function n(). how to access n() from Class above ?

[trq]

$x->n();