$this->response->setExpires(new DateTime());
public function setExpires($timestamp) { $date = new \DateTime('now', new \DateTimeZone('UTC')); $date->setTimestamp($timestamp); $date->setTimezone(new \DateTimeZone('UTC')); $this->setHeader('Expires', $date->format('D, d M Y H:i:s') . ' GMT'); return $this; }