PHP DDOda Obyekt metod nomini o'zgaruvchidan olish

Xususiyat nomlarini o'zgaruvchida saqlashga o'xshab, metod nomlarini ham saqlash mumkin. Keling, buni misol ortaqli ko'ramiz. Bizda quyidagi User klassi va uning xususiyat getterlari mavjud bo'lsin:

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

Ushbu klassning obyektini yaratamiz:

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

Faraz qilaylik, o'zgaruvchida metod nomi saqlansin:

php<?php
  $method = 'getName';
?>

Keling, o'zgaruvchidagi nom bilan metodni chaqiramiz:

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

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

php<?php
  $methods = [
    'method1' => 'getName',
    'method2' => 'getSalary',
    'method3' => 'getPosition',
  ];
?>