Access Modifiers
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
Check out the example below where we use the access modifiers on properties:
<?php
class Person{
//properties of the class
public $name;
protected $age;
private $gender;
}
$person = new Person();
$person->name = 'Samuel';//OK
echo $person->name;
$person1->age = 18;//Error
echo $person->age;
$person1->gender = 'Male';//Error
echo $person->gender;
Check out the example below where we use the access modifiers on the methods:
<?php
class Person{
//properties of the class
public $name;
public $age;
public $gender;
//methods of the class
function setName($name){
$this->name = $name;
}
protected function setAge($age){
$this->age = $age;
}
private function setGender($gender){
$this->gender = $gender;
}
}
$person= new Person();
$person->setName('Samuel'); // OK
echo $person->name;
$person->setAge(18); // ERROR
echo $person->age;
$person->setGender('Male'); // ERROR
echo $person->gender;
?>
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