Asking for what isn't there

1<?php2class Config {3    private array $data = ['host' => 'db'];4    public string $mode = 'live';5    public function __get(string $name): string {6        echo "__get($name)\n";7        return $this->data[$name] ?? 'none';8    }9    public function __call(string $name, array $args): string {10        return "$name called with " . count($args);11    }12}13$c = new Config();14echo $c->mode, "\n";15echo $c->host, "\n";16echo $c->port, "\n";17echo $c->reload(1, 2), "\n";