<?php
 class A {
 	protected  $_my;
 	
 	public function __construct(){
 		
 	}
 	
 	public  function printMy(){
 		print_r($this);
 	}
 }
 
 class B extends A {
 	public function __construct() {
 		parent::__construct();
 		$this->_my = 'bac';
 	}
 }
 
 $b = new B();
 $b->printMy();
?>