<?php
class test
{
	private $data;
	private $name;
	
	public function __construct($data)
	{
		$this->data = $data;
	}

	public function foo($data)
	{
		return $this->data . $data;
	}
}

$object = new test('BAR!');
$test = call_user_func_array(array($object, 'foo'), array('bam!'));

echo $test;
echo $test;
?>