/**
* Reads an array of cache objects from storage.
*
* @param string $keys - Ids of the cache entry to read
* @return array of vB_CacheObjects
*/
protected function readCacheArray($keys)
{
$cacheids = array();
foreach($keys as $id => $key)
{
$cacheids[$id] = "'" . vB::$db->escape_string($key) . "'";
}
$rst = vB::$db->query_read_slave("
SELECT cacheid, data, expires, locktime, serialized
FROM " . TABLE_PREFIX . "cache
WHERE cacheid in (" . implode(',' , $cacheids) . ") AND expires > " . TIMENOW
);
if (!$rst)
{
return false;
}
$found = array();
$missing = array();
while($record = vB::$db->fetch_array($rst))
{
if (intval($record['serialized']))
{
try
{
$record['data'] = unserialize($record['data']);
if ($record['data'])
{
$obj = new vB_CacheObject($record['cacheid'], $record['data'], $record['expires'], $record['locktime']);
//only return good values
if (!$obj->isExpired())
{
$found[$record['cacheid']] = $record['data'];
}
}
}
catch (exception $e)
{
//If we got here, something was improperly serialized
//There's not much we can do, but we don't want to return bad data.
}
}
else
{
if (!$obj->isExpired())
{
$found[$record['cacheid']] = $record['data'];
}
}
}
return $found;
}
