<?php
class Spawned {
	public $variable = 'test';
}

class Factory {
	public function create() {
		return new Spawned();
	}

	public function alter($object, $variable) {
		$object->variable = $variable;
	}
}

$factory = new Factory();

$testobject = $factory->create();
$factory->alter($testobject, 'bier');

// Expected output: bier
echo $testobject->variable;
?>