[PHP] Making a object from one class available to all objects in the calling class

[Stephen Maher]

Hi,

Can someone advise on the following.

class class_y
{
    function test() {
        return "test";
        }
}

class  class_x
{
    function x {
        $n = new $y;
        }

    function z {
        $n->test();
        }
}

I need the object of class_y available to the other objects of classx
but I cant figure out how I do this. Any ideas?

Regards, Steve Maher