There are 3 types of Access Specifiers available in PHP, Public, Private and Protected.
Public - class members with this access modifier will be publicly accessible from anywhere, even from outside the scope of the class.
Private - class members with this keyword will be accessed within the class itself. It protects members from outside class access with the reference of the class instance.
Protected - same as private, except by allowing subclasses to access protected superclass members.
<?php
class demo
{
public $name="Ajeet";
functiondisp()
{
echo $this->name."<br/>";
}
}
class child extends demo
{
function show()
{
echo $this->name;
}
}
$obj= new child;
echo $obj->name."<br/>";
$obj->disp();
$obj->show();
?>Output:
<?php
classrookienerd
{
private $name="Sonoo";
private function show()
{
echo "This is private method of parent class";
}
}
class child extends rookienerd
{
function show1()
{
echo $this->name;
}
}
$obj= new child;
$obj->show();
$obj->show1();
?>Output:
<?php
classrookienerd
{
protected $x=500;
protected $y=100;
function add()
{
echo $sum=$this->x+$this->y."<br/>";
}
}
class child extends rookienerd
{
function sub()
{
echo $sub=$this->x-$this->y."<br/>";
}
}
$obj= new child;
$obj->add();
$obj->sub();
?>Output:
<?php
classrookienerd
{
public $name="Ajeet";
protected $profile="HR";
private $salary=5000000;
public function show()
{
echo "Welcome : ".$this->name."<br/>";
echo "Profile : ".$this->profile."<br/>";
echo "Salary : ".$this->salary."<br/>";
}
}
classchilds extends rookienerd
{
public function show1()
{
echo "Welcome : ".$this->name."<br/>";
echo "Profile : ".$this->profile."<br/>";
echo "Salary : ".$this->salary."<br/>";
}
}
$obj= new childs;
$obj->show1();
?>Output:
