I did it because I can.

wheel reinvented

<?

class a{
    public $something;
    function output(){
        echo("A happens!<br>");
    }
}

class b{
    public $something;
    function output(){
        echo "Let's do something B<br>";
    }
}

class test{
    public $object;
    function __construct($in="a",$args=null){
        if($in=="a")$this->object=new a($args);
        else $this->object=new b($args);
    }
    function __call($name,$args){
        return $this->object->$name($args);
    }
    function __get($name){
        return $this->object->$name;
    }
    function __set($name,$value){
        return $this->object->$name=$value;
    }

    function __isset($name){
        return isset($this->object->$name);
    }

    function __unset($name){
        unset($this->object->$name);
    }
}


$myTest=new test("b");
$myTest->output();
$myTest->something="Variable";
echo($myTest->something);


?>

new test("a");

Will produce an object of "a"

new test("b");

Will produce an object of "b"

There even IS a practical approach for that.