あるオブジェクトの親クラス(派生元クラス)のメソッドを外部から呼び出す

gistfile1.php

<?php

class C
{
	private $a;

	function __construct($owner)
	{
		$this->a = $owner;
	}

	public function test($v)
	{
		echo "" , __METHOD__ , "\n";
		return call_user_func(array($this->a, 'A::test'), $v);
	}
}

class A
{
	private $x;

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

	public function test($v)
	{
		echo "" , __METHOD__ , "\n";
		return '>>' . $this->x .':' . $v;
	}
}

class B extends A
{
	private $c;

	function __construct($x)
	{
		parent::__construct($x);
		$this->c = new C($this);
	}

	public function test($v)
	{
		echo "" , __METHOD__ , "\n";
		return $this->c->test($v);
	}
}

$b = new B(10);

echo $b->test('test') . "\n";

// --- output ---
// B::test
// C::test
// A::test
// >>10:test
// --------------