class A
{
private $v1 = 1;
public $v2 = 2;
protected $v3 = 3;
public function m1($n)
{
echo $n;
echo "\n";
}
}
class B extends A
{
public $v4 = 4;
public function m2($n)
{
echo $this->v4;
echo "\n";
echo $this->v3;
echo "\n";
}
}
$oa1 = new A();
$oa1->m1(1);
$ob1 = new B();
$ob1->m2(1);
echo "\n";
?>
