Pinger, anonymous class php

One of the usecases where this is useful is a result object to avoid multiple return types.
<?php
interface PingResultInterface
{
    public function isSuccessful();
}
?>

Given we have 2 implementations, one would be a ping that is executed before creating the object (value object) and one that's lazy (proxy), they could be made runtime based on certain things:

<?php
// Pinger implements PingerInterface
public function ping(string $host) : PingResultInterface
{
    return new class($this->ping($host)) implements PingResultInterface {
        private $result;

        public function __construct(bool $result)
        {
            $this->result = $result;
        }

        public function isSuccessful()
        {
            return $this->result;
        }
    }
}


<?php
// LazyPinger implements PingerInterface
// __construct(PingerInterface $pinger) decorator
public function ping(string $host) : PingResultInterface
{
    return new class($this, $host) implements PingResultInterface {
        private $pinger
        private $host;

        public function __construct(PingerInterface $pinger, string $host)
        {
            $this->pinger = $pinger;
            $this->host   = $host;
        }

        public function isSuccessful()
        {
            // could add caching layer
            return $this->pinger->ping($this->host);
        }
    }
}