Dynamic properties with PHP classes

My question concerns referring to properties of php class instances dynamically. I know how to do it in Flash, so naturally I'm trying to find its counterpart in php.

In Flash, if you have a class called Animal which contains the properties species and isHairy, then you could do something like this:

Code:

---

// EXAMPLE 1 -- FLASH
fido = new Animal ();
fido.species = "dog";
fido.isHairy = true;

---

Or you could access the properties dynamically:

Code:

---

// EXAMPLE 2 -- FLASH
fido = new Animal ();
property1 = "species";
property2 = "isHairy";
fido [property1] = "dog";
fido [property2] = true;

---

... which would have the same effect.

Now the php counterpart to the first example would be this:

Code:

---

// EXAMPLE 1 -- PHP
$fido = new Animal ();
$fido->species = "dog";
$fido->isHairy = true;

---

But what's the php equivalent to the second example? Is it even possible? Or maybe with some indirect method?

Many thanks,
Jamie

Well, I eventually got an answer from someone else, so I'm posting it here in case it should ever be of use to anyone else:

Code:

---

<?php
class fido
{
    var $species;
    var $isHairy;

    function pet() {
        return "Give me food!";
    }
}
// test it out
$d = new fido;
$h = 'isHairy';
$s = 'species';
$p = 'pet';

$d->$h = true;
print "fido->isHairy: ".$d->$h."\n";
$d->$s = 'Heinz57';
print "fido->species: ".$d->$s."\n";
print "fido->pet: ".$d->{$p}()."\n";
?>

---