PHP da OOP da Himoyalangan Xususiyatlar
PHP shuningdek himoyalangan xususiyatlarni qo'llab-quvvatlaydi.
Ular ham protected modifikatori yordamida e'lon qilinadi.
Bunday xususiyatlar meros qolinadi va
voris sinflarda mavjud bo'ladi.
Keling, yoshi saqlovchi himoyalangan xususiyatga ega ota-sinf yarataylik:
<?php
class User {
protected $age;
public function setAge($age) {
$this->age = $age;
}
public function getAge() {
return $this->age;
}
}
?>
Voris sinfda yoshni bittaga oshiradigan metod yaratamiz:
<?php
class Student extends User {
public function incAge() {
$this->age++;
}
}
?>
Quyidagi kodni himoyalangan xususiyat orqali qayta yozing:
<?php
class User {
private $name;
public function setName($name) {
$this->name = $name;
}
public function getName() {
return $this->name;
}
}
class Employee extends User {
public function setName($name) {
if (strlen($name) > 0) {
$this->name = $name;
}
}
}
?>
