OOP — Magic Method

class Money {
    public function __construct(private int $cents) {}

    public function __toString(): string {
        return '$' . number_format($this->cents / 100, 2);
    }
}

$price = new Money(1999);
echo $price;   // $19.99 — echo স্বয়ংক্রিয়ভাবে __toString() call করে

class Config {
    private array $data = [];

    public function __get(string $name) {
        return $this->data[$name] ?? null;
    }

    public function __set(string $name, $value): void {
        $this->data[$name] = $value;
    }
}

$config = new Config();
$config->siteName = 'My App';   // __set() trigger করে
echo $config->siteName;         // __get() trigger করে — "My App"

class ApiClient {
    public function __call(string $method, array $args) {
        return "Called $method with " . count($args) . " argument(s)";
    }
}

$client = new ApiClient();
echo $client->getUsers(1, 2);   // "Called getUsers with 2 argument(s)"