}
class c extends p
{
public function cf()
{
parent::pf();
parent::cc();
$this->cc();
}
public function cc()
{
echo 'in c-cc<br/>';
}
}
$c = new c();
$c->cf();
/*
in p-pf
in p-pp
in o -cc
in c-cc
*/
//父类中static变量，被子类继承。且共享。
class MyParent
{
protected static $variable;
}
class Child1 extends MyParent
{
function set()
{
