PHP da OOP da Funksiya Orqali Xususiyat Nomiga Murojaat

Obyekt xususiyatining nomini ham funksiyadan olish mumkin. Buni qanday amalga oshirishni ko'rib chiqaylik. Quyidagi User klassimiz bor deb faraz qilaylik:

php<?php
  class User
  {
    public $name;
    public $surn;
    
    public function __construct($name, $surn)
    {
      $this->name = $name;
      $this->surn = $surn;
    }
  }
?>

Ushbu klassning obyektini yaratamiz:

php<?php
  $user = new User('john', 'smit');
?>

Quyidagi funksiyamiz bor deb faraz qilaylik:

php<?php
  function getProp()
  {
    return 'name';
  }
?>

Keling, obyekt xususiyatiga murojaat qilaylik, uning nomi bizning funksiyamiz tomonidan qaytariladi:

php<?php
  echo $user->{getProp()}; // 'john' ni chiqaradi
?>

php<?php
  class Employee
  {
    public $name;
    public $salary;
    public $position;
    
    public function __construct($name, $salary, $position)
    {
      $this->name = $name;
      $this->salary = $salary;
      $this->position = $position;
    }
  }
?>

php<?php
  function getProp1()
  {
    return 'name';
  }
  function getProp2()
  {
    return 'salary';
  }
?>