PHP Access Modifiers Example

WebSolutionStuff | Sep-06-2021 | Categories : Laravel PHP

In this example we will see PHP access modifiers example. In PHP default access modifier is public. PHP provide different types of modifiers like private, public or protected. Properties and methods can have access modifiers which control where they can be accessed.

There are three access modifiers:

public - the property or method can be accessed from everywhere. This is default
protected - the property or method can be accessed within the class and by classes derived from that class
private - the property or method can ONLY be accessed within the class

Example 1 : Public

<?php  
class parent  
{  
    public $name="websolutionstuff";  
    function_display()  
    {  
        echo $this->name."<br/>";  
    }  
}  

class child extends parent
{  
    function show()  
    {  
        echo $this->name;  
    }  
}     

$obj= new child;  
echo $obj->name."<br/>";
$obj->function_display();
$obj->show();
?>

Output :

websolutionstuff
websolutionstuff
websolutionstuff

Read Also : How to Send E-mail Using Queue in Laravel 7/8

Example 2 : Private

<?php  
class Websolutionstuff
{  
    private $name="websolutionstuff";  
    private function show()  
    {  
        echo "This is private method of parent class";  
    }  
}

class child extends Websolutionstuff  
{  
    function show1()  
    {  
    echo $this->name;  
    }  
}     
$obj= new child;  
$obj->show();  
$obj->show1();  
?>

Output :

Fatal error:  Call to private method Websolutionstuff::show()....

Read Also : Laravel 8 User Role and Permission

Example 3 : Protected

<?php  
class Websolutionstuff
{  
    protected $a=200;  
    protected $b=100;  
    function add()  
    {  
        echo $sum=$this->a+$this->b."<br/>";  
    }  
}     
class child extends Websolutionstuff  
{  
    function sub()  
    {  
        echo $sub=$this->a-$this->b."<br/>";  
    }  
}     
$obj= new child;  
$obj->add();
$obj->sub();
?>

Output :