basic DTO concept in PHP

AbstractDto.php

<?php

use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Contracts\Support\Jsonable;
use JsonSerializable;

class AbstractDto extends ArrayableJsonableObject implements \ArrayAccess
{
    public function __construct(array $properties = [])
    {
        foreach ($properties as $k => $v) {
            $this->$k = $v;
        }
    }

    final public function __get($name)
    {
        throw new \Exception($this->getUndefinedErrorMessage("\${$name} property"));
    }

    final public function __set($name, $value)
    {
        throw new \Exception($this->getUndefinedErrorMessage("\${$name} property"));
    }

    final public function __call($name, $arguments)
    {
        throw new \Exception($this->getUndefinedErrorMessage("{$name}() method"));
    }

    final public function offsetExists($offset)
    {
        return isset($this->$offset);
    }

    final public function offsetGet($offset)
    {
        return $this->$offset;
    }

    final public function offsetSet($offset, $value)
    {
        $this->$offset = $value;
    }

    final public function offsetUnset($offset)
    {
        unset($this->$offset);
    }

    private function getUndefinedErrorMessage($name)
    {
        return static::class . "::{$name} is not defined. Dynamic access is disabled for DTOs.";
    }
}



class ArrayableJsonableObject implements Arrayable, Jsonable, JsonSerializable
{
    /**
     * @return array
     */
    public function toArray()
    {
        $obj                    = $this;
        $public_properties_only = function () use ($obj) {
            $vars = get_object_vars($obj);
            foreach ($vars as $k => $v) {
                if ($v instanceof Arrayable) {
                    $vars[$k] = $v->toArray();
                }
            }
            return $vars;
        };
        return $public_properties_only();
    }

    /**
     * @param int $options
     *
     * @return string
     */
    public function toJson($options = 0)
    {
        return json_encode($this, $options);
    }

    /**
     * @return array|mixed
     */
    public function jsonSerialize()
    {
        return $this->toArray();
    }
}