<?php
/**
 * Testclass
 * @author jpt
 */
class Foo {
	/**
	 * @var array Instances of Bar.
	 */
	protected $pool;

	function __construct() {
		$this->pool = array();
	}

	/**
	 * Adds an Instance of Bar to the Pool.
	 * @param Bar $bar
	 * @return void
	 */
	public function addBar($bar) {
		array_push($this->pool, $bar);
	}

	/**
	 * Returns the internal instance of Bar for the specific ID.
	 * @param int $id
	 * @return Bar
	 */
	public function getBar($id) {
		return $this->pool[$id];
	}


	/**
	 * Outputs the current state of the bars in the pool.
	 * @return void
	 */
	public function getTestResult() {
		foreach($this->pool AS $id=>$bar) {
			echo "ID: " . $id . ", Test: " . $bar->test . "\n";
		}
	}
}

/**
 * Testclass #2
 * @author jpt
 */
class Bar {
	/**
	 * @var string Teststring.
	 */
	public $test;

	/**
	 * Default constructor. Initializes test variable.
	 * @return void
	 */
	function __construct() {
		$this->test = "failed";
	}
}


$f = new Foo();

$f->addBar(new Bar());
$f->addBar(new Bar());
$f->addBar(new Bar());
$f->addBar(new Bar());

$f->getBar(1)->test = "success";

$f->getTestResult();


?>