<?php

class Example {
  public $x = 4;
  function printer () { echo "Hello World: $this->x!\n"; }
}

$class = new ReflectionClass ('Example');
$method = $class->getMethod ('printer');

$object = new Example;
// $closure = $method->getClosure ($object);
// $closure ();
$method->invokeArgs($object, array());
$object->x = 5;
// $closure ();
$method->invokeArgs($object, array());