note 123687 added to language.oop5.visibility
| From: | tushar dot khan0122 at gmail dot com | Date: | Tue, 12 Mar 2019 19:54:07 +0000 |
| Subject: | note 123687 added to language.oop5.visibility | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-210365@lists.php.net to get a copy of this message | ||
1 . If the class member declared as public then it can be accessed everywhere.
2 . If the class members declared as protected then it can be accessed only within the class itself
and by inheriting and parent classes.
3 .If the class members declared as private then it may only be accessed by the class that defines
the member.
<?php
// BaseClass
class pub {
public $tag_line = "A Computer Science Portal for Geeks!";
function display() {
echo $this->tag_line."<br/>";
}
}
// SubClass
class child extends pub {
function show(){
echo $this->tag_line;
}
}
// Object Declaration
$obj= new child;
// A Computer Science Portal for Geeks!
echo $obj->tag_line."<br/>";
// A Computer Science Portal for Geeks!
$obj->display();
// A Computer Science Portal for Geeks!
$obj->show();
?>
<?php
// Base Class
class pro {
protected $x = 500;
protected $y = 500;
// Subtraction Function
function sub()
{
echo $sum=$this->x-$this->y . "<br/>";
}
}
// SubClass - Inherited Class
class child extends pro {
function mul() //Multiply Function
{
echo $sub=$this->x*$this->y;
}
}
$obj= new child;
$obj->sub();
$obj->mul();
?>
<?php
// Base Class
class demo {
private $name="A Computer Science Portal for Geeks!";
private function show()
{
echo "This is private method of base class";
}
}
// Sub Class
class child extends demo {
function display()
{
echo $this->name;
}
}
// Object Declaration
$obj= new child;
// Uncaught Error: Call to private method demo::show()
$obj->show();
//Undefined property: child::$name
$obj->display();
?>
----
Server IP: 208.43.231.9
Probable Submitter: 185.85.3.142 (proxied: 103.84.255.197)
----
Manual Page -- http://php.net/manual/en/language.oop5.visibility.php
Edit -- https://master.php.net/note/edit/123687
Del: integrated -- https://master.php.net/note/delete/123687/integrated
Del: useless -- https://master.php.net/note/delete/123687/useless
Del: bad code -- https://master.php.net/note/delete/123687/bad+code
Del: spam -- https://master.php.net/note/delete/123687/spam
Del: non-english -- https://master.php.net/note/delete/123687/non-english
Del: in docs -- https://master.php.net/note/delete/123687/in+docs
Del: other reasons-- https://master.php.net/note/delete/123687
Reject -- https://master.php.net/note/reject/123687
Search -- https://master.php.net/manage/user-notes.php