[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();
?>