Testing private property/method inheritance in PHP

TestPrivateInheritance.php

<?php

class PrivateBase
{

	private $privateProperty = 5;

	private function privateMethod()
	{
		echo 'PrivateBase:'.$this->privateProperty;
	}

	public function publicBaseMethod()
	{
		$this->privateMethod();
	}
}

class PrivateSub extends PrivateBase
{

	private $privateProperty = 10;

	private function privateMethod()
	{
		echo 'PrivateSub:'.$this->privateProperty;
	}

	public function publicSubMethod()
	{
		$this->privateMethod();
	}
}

$object = new PrivateSub();
$object->publicBaseMethod(); // OUTPUT: PrivateBase:5
$object->publicSubMethod(); // OUTPUT: PrivateSub:10