{ // echo Test::$a; echo parent::$a; } static function DisplayParentFun() { echo parent::Modify(); } public function InstanceTest() { // echo $this->Hello(); echo parent::Hello(); } public function Hello() { echo "*********<br/>"; parent::Hello(); echo "*********<br/>"; } } echo Test::Modify(); echo "<br/>"; echo Test2::$a . "<br/>"; echo Test2::Modify() . "<br/>"; echo Test2::DisplayParentA() . "<br/>"; echo Test2::DisplayParentFun() . "<br/>"; $object = new Test2(); $object->InstanceTest(); $object->Hello(); $object2 = new Test(); $object2->Hello();