public function load($id,
$doNotTestCacheValidity = false
) { // doNotTestCacheValidity implemented by giving zero lifetime to the cache
if ($doNotTestCacheValidity) { $lifetime = 0;
} else { $lifetime =
$this->_directives
['lifetime'
];
} $res =
output_cache_get($id,
$lifetime);
if($res) { return $res[0
];
} else { return false;
} } /**
* Test if a cache is available or not (for the given id)
*
* @param string $id Cache id
* @return mixed|false false (a cache is not available) or "last modified" timestamp (int) of the available cache record
*/