get_called_class funksiyasi

get_called_class funksiyasi statik metod qaysi klass kontekstida chaqirilgan bo'lsa, shu klassning nomini qaytaradi. Bu meros olish bilan ishlashda, metod aniq qaysi klassdan chaqirilganligini aniqlash kerak bo'lganda foydalidir.

Sintaksis

phpget_called_class();

Misol

Keling, ikkita klass yaratamiz va metodni voris klassdan chaqiramiz:

php<?php
  class ParentClass {
    public static function test() {
      return get_called_class();
    }
  }

  class ChildClass extends ParentClass {}

  echo ChildClass::test();
?>

Kodni bajarish natijasi:

php'ChildClass'

Misol

Keling, funksiyaning ishlashini ota-klassdan chaqirilganda tekshiramiz:

php<?php
  class A {
    public static function who() {
      return get_called_class();
    }
  }

  class B extends A {}

  echo A::who();
  echo "\n";
  echo B::who();
?>

Kodni bajarish natijasi:

php'A'
'B'

Misol

Kerakli klass ob'ektlarini yaratish uchun funksiyadan foydalanish:

php<?php
  class Factory {
    public static function create() {
      $class = get_called_class();
      return new $class;
    }
  }

  class Product extends Factory {}

  $obj = Product::create();
  echo get_class($obj);
?>

Kodni bajarish natijasi:

php'Product'

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