PHP Access Modifiers Example

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

So, let's see PHP access modifiers example, access specifier in PHP, default access modifier in PHP, access modifiers in oop, and PHP access modifiers.

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="techsolutionstuff";  
    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:

techsolutionstuff
techsolutionstuff
techsolutionstuff

---

Read Also: Laravel Unique Validation on Update

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Example 2: Private

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

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

Output :

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

---

Read Also: CRUD Operation In PHP

---

Example 3: Protected

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

Output :

300
100