[RESOLVED] Class Pointer?

[code?]

Can I set a variable to be a pointer/reference to a class?

<?php
class Data {}
$DataClass = Data;
$Data1 = new $DataClass;
?>

I'm not so good with pointer syntax, is it &?

Also, it's for something like this.

<?php
class A
{
public $B;
function __construct()
{
$this->B = &A_B;
}
}

class A_B
{

}

$A = new A();
$B = new $A->B();
?>