Easy -read only- access for a DTOs private properties.

Dto.php

<?php

final class Dto
{
    use Gettable;

    private $title;
    private $description;

    public function __construct($title, $description) {
        $this->title       = $title;
        $this->description = $description; 
    }

    public function getTitle()
    {
        return $this->title;
    }
    
    public function getDescription()
    {
        return $this->description;
    }
}

Gettable.php

<?php

use Exception;
use ReflectionClass;

trait Gettable
{
    public function __get($name)
    {
        if (!property_exists($this, $name)) {
            throw new Exception("Undefined property: ". get_class($this) ."::$".$name);
        }

        $property = (new ReflectionClass($this))->getProperty($name);

        if ($property->isPrivate()) {
            $getter = 'get' . ucfirst($name);
            
            if (method_exists($this, $getter)) {
                return $this->{$getter}();
            }

            throw new Exception("Trying to access private property ". get_class($this) ."::$".$name);
        }

        return $this->name;
    }
}

Test.php

<?php

$dto = new Dto(
  'Alice\'s Adventures in Wonderland',
  'Alice was beginning to get very tired of sitting by her sister on the bank, ...'
);

var_dump($dto->getTitle() === $dto->title); // true
var_dump($dto->getDescription() === $dto->description); //true