/**
* Constructor
*
* Set the amount of time to cache.
*
* @access public
* @return object HTTP_Header_Cache
* @param int $expires
* @param string $unit
*/
function HTTP_Header_Cache($expires = 0, $unit = 'seconds')
{
parent::HTTP_Header();
$this->setHeader('Pragma', 'cache');
$this->setHeader('Cache-Control', 'public');
$this->setHeader('Last-Modified', $this->getCacheStart());
if ($expires && !$this->isOlderThan($expires, $unit)) {
$this->exitIfCached();
}
}
/**
* Constructor
*
* Set the amount of time to cache.
*
* @access public
* @return object HTTP_Header_Cache
* @param int $expires
* @param string $unit
*/
function HTTP_Header_Cache($expires = 0, $unit = 'seconds')
{
parent::HTTP_Header();
$this->setHeader('Pragma', 'cache');
$this->setHeader('Last-Modified', $this->getCacheStart());
$this->setHeader('Cache-Control', 'private, must-revalidate, max-age=0');
if ($expires) {
if (!$this->isOlderThan($expires, $unit)) {
$this->exitCached();
}
$this->setHeader('Last-Modified', time());
}
}
