Returns true if the Cache-Control directive is defined.
| public hasCacheControlDirective ( string $key ) : boolean | ||
| $key | string | The Cache-Control directive |
| return | boolean | true if the directive exists, false otherwise |
public function testCacheControlDirectiveOverrideWithReplace()
{
$bag = new HeaderBag(array('cache-control' => 'private, max-age=100'));
$bag->replace(array('cache-control' => 'public, max-age=10'));
$this->assertTrue($bag->hasCacheControlDirective('public'));
$this->assertTrue($bag->getCacheControlDirective('public'));
$this->assertTrue($bag->hasCacheControlDirective('max-age'));
$this->assertEquals(10, $bag->getCacheControlDirective('max-age'));
}
/**
* @return bool
*/
public function isNoCache()
{
return $this->headers->hasCacheControlDirective('no-cache') || 'no-cache' == $this->headers->get('Pragma');
}
/**
* Returns true if the response must be revalidated by caches.
*
* This method indicates that the response must not be served stale by a
* cache in any circumstance without first revalidating with the origin.
* When present, the TTL of the response should not be overridden to be
* greater than the value provided by the origin.
*
* @return Boolean true if the response must be revalidated by a cache, false otherwise
*/
public function mustRevalidate()
{
return $this->headers->hasCacheControlDirective('must-revalidate') || $this->headers->has('must-proxy-revalidate');
}
