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<?php
namespace Yiranzai\File;
use DateTime;
/**
* Class Node
* @package Yiranzai\Dht
*/
class Node
{
* @var string
public $data;
* @var Node|null
public $next;
public $key;
* @var DateTime
protected $expiredAt;
* Node constructor.
* @param string $key
* @param string $data
* @param DateTime $expiredAt
public function __construct(string $key, string $data, DateTime $expiredAt = null)
$this->key = $key;
$this->data = $data;
$this->expiredAt = $expiredAt;
}
* @param null|string $default
* @return string|null
* @throws \Exception
public function getData($default = null): ?string
if ($this->isExpired()) {
return $default;
return $this->data;
* @return bool
public function isExpired(): bool
if ($this->expiredAt === null) {
return false;
return $this->expiredAt < new DateTime();
yiranzai /
php-file-cache
