php's __get __set crazyness

MADNESS!.php

<?php

//Define a simple class
class Foo {
	//run this whenever a variable of this class is set
	function __set($name, $value) {
		//store the value we're setting in a completely arbitrary place
		$this->morp = $value;
	}

	//run this whenever a variable of this class is getted!
	function __get($name) {
		//get the variable from the completely arbitrary place were it was kept
		return $this->morp;
	}
}

//start the madness!
$foo = new Foo();

//set a variable from the class with some text
$foo->skoo = "squiggle";

//make sure it was set
var_dump($foo->skoo);
assert($foo->skoo == "squiggle");

//make sure it was set some more
assert(!empty($foo->skoo));

//But this assertion fails
//WTFZ?

//so for the reasons of madness, we have to do this

$aaaaargh = $foo->skoo;

assert($aaaaargh == "squiggle");
assert(!empty($aaaaargh));

?>