public function Response::isNotModified in Zircon Profile 8.0

Same name and namespace in other branches

1. 8 vendor/symfony/http-foundation/Response.php \Symfony\Component\HttpFoundation\Response::isNotModified()

Determines if the Response validators (ETag, Last-Modified) match a conditional value specified in the Request.

If the Response is not modified, it sets the status code to 304 and removes the actual content by calling the setNotModified() method.

Parameters

Request $request A Request instance:

Return value

bool true if the Response validators match the Request, false otherwise

File

vendor/symfony/http-foundation/Response.php, line 997

Class

Response

Response represents an HTTP response.

Namespace

Symfony\Component\HttpFoundation

Code

public function isNotModified(Request $request) {
  if (!$request
    ->isMethodSafe()) {
    return false;
  }
  $notModified = false;
  $lastModified = $this->headers
    ->get('Last-Modified');
  $modifiedSince = $request->headers
    ->get('If-Modified-Since');
  if ($etags = $request
    ->getETags()) {
    $notModified = in_array($this
      ->getEtag(), $etags) || in_array('*', $etags);
  }
  if ($modifiedSince && $lastModified) {
    $notModified = strtotime($modifiedSince) >= strtotime($lastModified) && (!$etags || $notModified);
  }
  if ($notModified) {
    $this
      ->setNotModified();
  }
  return $notModified;
}