PHP kirish modifikatorlari
PHP - Kirish modifikatorlari
Xususiyatlar va usullarda kirish o‘zgartirish moslamalari (yoki ko‘rinish kalit so‘zlari) bo‘lishi mumkin, ular qayerda bo‘lishi mumkinligini nazorat qiladi kirish mumkin.
PHP da uchta kirish modifikatori mavjud:
public- xususiyat yoki usulga hamma joydan kirish mumkin. Bu standartprotected- xususiyat yoki metod mumkin doirasida kirish mumkin class va shu classdan olingan classlar bo‘yichaprivate- xususiyat yoki metod mumkin FAQAT ular belgilangan classda kirish mumkin
Eslatma: Agar hech qanday ruxsat o‘zgartirgich belgilanmagan bo‘lsa, u o‘rnatiladi
public .
Ommaviy kirish modifikatori
public kirish modifikatori class xususiyatlari yoki usullariga kirish imkonini beradi
hamma joydan.
Quyidagi misolda $name xususiyati va get_details() metodiga classdan tashqaridan kirish mumkin.
Misol
<?php
class Fruit {
public $name;
public function get_details() {
echo "Name: " . $this->name . ".";
}
}
$apple = new Fruit();
$apple->name = "Apple"; // Can be accessed directly
$apple->get_details();
?>
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Shaxsiy kirish modifikatori
private kirish modifikatori class xususiyatlari yoki usullariga ruxsat beradi
FAQAT ular belgilangan classda kirish uchun.
Quyidagi misolda $name xususiyati shaxsiydir va unga bevosita kirish mumkin emas.
Misol
<?php
class Fruit {
private $name;
public function get_details() {
echo "Name: " . $this->name . ".";
}
}
$apple = new Fruit();
$apple->name = "Apple"; // Error: Cannot access private property
$apple->get_details();
?>
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Himoyalangan kirish modifikatori
protected kirish modifikatori class xususiyatlari yoki usullariga ruxsat beradi
class ichida va shu classdan olingan classlar (child
classlar).
Quyidagi misolda $name xususiyati himoyalangan va unga bevosita kirish mumkin emas.
Misol
<?php
class Fruit {
protected $name;
public function get_details() {
echo "Name: " . $this->name . ".";
}
}
$apple = new Fruit();
$apple->name = "Apple"; // Error: Cannot access protected property
$apple->get_details();
?>
O‘zingiz sinab ko‘ring »
Quyidagi misolda $name xossasi himoyalangan va unga classdan tashqarida to‘g‘ridan-to‘g‘ri kirish mumkin emas, lekin unga Apple subklassida (bola class) kirish mumkin bo‘ladi.
Misol
<?php
class Fruit {
protected $name;
public function setType($name) {
$this->name = $name;
}
}
class Apple extends Fruit {
public function getType() {
echo "Name: " . $this->name . ".";
}
}
$apple = new Apple();
$apple->setType("Apple");
//echo $apple->name; // Error: Cannot access protected property
echo $apple->getType(); // Output: Name: Apple.
?>
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