Checks whether the method is safe or not.
| public static isMethodSafe ( ) : boolean | ||
| return | boolean | |
/**
* 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.
*
* @param Request $request A Request instance
*
* @return bool true if the Response validators match the Request, false otherwise
*
* @api
*/
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;
}
/**
* 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.
*
* @param Request $request A Request instance
*
* @return bool true if the Response validators match the Request, false otherwise
*
* @api
*/
public function isNotModified(Request $request)
{
if (!$request->isMethodSafe()) {
return false;
}
$lastModified = $request->headers->get('If-Modified-Since');
$notModified = false;
if ($etags = $request->getEtags()) {
$notModified = (in_array($this->getEtag(), $etags) || in_array('*', $etags)) && (!$lastModified || $this->headers->get('Last-Modified') == $lastModified);
} elseif ($lastModified) {
$notModified = $lastModified == $this->headers->get('Last-Modified');
}
if ($notModified) {
$this->setNotModified();
}
return $notModified;
}