<?php
class A {
	
	public function __construct() {
		$this -> foo();
	}
	
	private function foo() {
		echo __METHOD__ . "\r\n";
	}
}

class B extends A {
	public function foo() {
		echo __METHOD__ . "\r\n";
	}
}

class C extends A {	
	protected function foo() {
		echo __METHOD__ . "\r\n";
	}
}

class D extends A {
        private function foo() {
                echo __METHOD__ . "\r\n";
        }
}

$a = new A();
$b = new B();
$c = new C();
$d = new D();
