public function Response::setExpires

Sets the Expires HTTP header with a DateTime instance.

Passing null as value will remove the header.

@api

Parameters

\DateTime|null $date A \DateTime instance or null to remove the header:

Return value

Response

File

drupal/core/vendor/symfony/http-foundation/Symfony/Component/HttpFoundation/Response.php, line 672

Class

Response
Response represents an HTTP response.

Namespace

Symfony\Component\HttpFoundation

Code

public function setExpires(\DateTime $date = null) {
  if (null === $date) {
    $this->headers
      ->remove('Expires');
  }
  else {
    $date = clone $date;
    $date
      ->setTimezone(new \DateTimeZone('UTC'));
    $this->headers
      ->set('Expires', $date
      ->format('D, d M Y H:i:s') . ' GMT');
  }
  return $this;
}