PHP Access Modifiers - 3

class Person
{
 public function pub()
 {
  echo 'I am Publicly accessible<br>';
 }

 private function pri()
 {
  echo 'I am Private function<br>';
 }
 protected function pro()
 {
  echo 'I am Protected function<br>';
 }
}



class NewPerson extends Person
{

 public function getPrivatedata()
 {
  parent::pri();
 }

 public function getProtectedata()
 {
  parent::pro();
 }

}



$newperson = new NewPerson;



//$newperson->getPrivatedata();  // Fatal error: Call to private method Person::pri() from context 'NewPerson'



$newperson->getProtectedata();  // Output is I am Protected function

from the above example newperson object trying to access a function , that is defined as private from its class Person. that shows error message. because we cant access it from derived class.

after that we call a function getProtectedata() . it access protected function pro from Person. It can be accessible , because of protected.

so whenever we want to access a function from its child class, it should be defined as protected, else private.