Exercício __set

Dentro da Classe Address

<?php

namespace Alura\Bank\Model;

/**
 * Class Addres
 * @package Alura\Bank\Model;
 * @property  string $city;
 * @property string $neighborhood;
 * @property string $street;
 * @property string $houseNumber;
 */
class Address
{
    private string $city;
    private string $neighborhood;
    private string $street;
    private string $houseNumber;

    public function __construct(string $citty, string $neighborhood, string $street, string $houseNumber)
    {
        $this->city = $citty;
        $this->neighborhood = $neighborhood;
        $this->street = $street;
        $this->houseNumber = $houseNumber;
    }

    public function setCity(string $city): void
    {
        $this->city = $city;
    }

    public function setNeighborhood(string $neighborhood): void
    {
        $this->neighborhood = $neighborhood;
    }

    public function setStreet(string $street): void
    {
        $this->street = $street;
    }

    public function setHouseNumber(string $houseNumber): void
    {
        $this->houseNumber = $houseNumber;
    }

    public function getCity(): string
    {
        return $this->city;
    }

    public function getNeighborhood(): string
    {
        return $this->neighborhood;
    }

    public function getStreet(): string
    {
        return $this->street;
    }

    public function getHouseNumber(): string
    {
        return $this->houseNumber;
    }

    public function __toString(): string
    {
        return "$this->street, $this->houseNumber, $this->neighborhood, $this->city." . PHP_EOL;
    }

    public function __get($nameAttribute)
    {
        $method = 'get' . ucfirst($nameAttribute);
        return $this->$method() . PHP_EOL;
    }

    public function __set($nameAttribute, $value)
    {
        $method = 'set' . ucfirst($nameAttribute);
        $this->$method($value);
    }
}

Dentro do arquivo addresses

<?php

use Alura\Bank\Model\Address;

require_once 'autoload.php';

$setEndereco = new Address('São Paulo', 'Sei lá', 'Jardim Sei lá', '100');

echo 'Antes de mudar' . PHP_EOL;
echo '-------------------------------------------------' . PHP_EOL;
echo '- '.$setEndereco;
echo '-------------------------------------------------' . PHP_EOL;

$setEndereco->city = 'SeiLaLandia';
$setEndereco->neighborhood = 'Vila Zero';
$setEndereco->street = 'Rua de joão ninguém';
$setEndereco->houseNumber = '0A';

echo 'Depois de mudar'. PHP_EOL;
echo '-------------------------------------------------' . PHP_EOL;
echo '- '.$setEndereco;
echo '-------------------------------------------------' . PHP_EOL;

Resultado