Jina la Sifa kutoka kwa Safu ya Ushirikiano katika OOP katika PHP

Wacha sasa tuangalie jinsi ya kurejea sifa ya kitu kulingana na jina kutoka kwa kipengele cha safu ya ushirikiano. Wacha tuwe na darasa lifuatalo User:

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

Wacha tuunde kitu cha darasa hili:

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

Wacha tupewe safu ya sifa:

php<?php
  $props = ['prop1' => 'name', 'prop2' => 'surn'];
?>

Wacha turejee kwenye sifa ya kitu, ambayo jina lake limehifadhiwa kwenye kipengele cha safu yetu:

php<?php
  echo $user->{$props['prop1']}; // itatoa 'john'
?>

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
  $arr = [
    'prop1' => 'name',
    'prop2' => 'salary', 
    'prop3' => 'position'
  ];
?>