Sifa Zilizolindwa katika OOP katika PHP
PHP pia inasaidia sifa zilizolindwa.
Zinatangazwa pia kwa kutumia kiwakilishi protected.
Sifa kama hizi hurithiwa na zinapatikana
katika madarasa ya watoto.
Tufanye darasa la mzazi na sifa iliyolindwa, iliyo na umri:
<?php
class User {
protected $age;
public function setAge($age) {
$this->age = $age;
}
public function getAge() {
return $this->age;
}
}
?>
Katika darasa la mtoto tufanye mbinu, iongeze umri kwa moja:
<?php
class Student extends User {
public function incAge() {
$this->age++;
}
}
?>
Andika upya msimbo ufuatao kupitia sifa iliyolindwa:
<?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;
}
}
}
?>
