/**
* 计算文件附加属性
* @param string $deviceName
* @param int $fileSize
* @param int $versionId
* @param string $action
* @param int $userId
* @param string $userNick
* @param string $versions
* @return string
*/
public static function getFileVersions($deviceName, $fileSize, $versionId, $action, $userId, $userNick, $versions = "a:0:{}")
{
$versions = is_null($versions) || empty($versions) ? "a:0:{}" : $versions;
$version = array();
$version["type"] = $action;
$version["version_id"] = $versionId;
$version["user_id"] = $userId;
$version["user_nick"] = $userNick;
$version["device_name"] = $deviceName;
$version["file_size"] = $fileSize;
$version["datetime"] = MiniUtil::getCurrentTime();
$versions = @unserialize($versions);
if (!$versions) {
$versions = array();
}
// 当文件历史版本超过一定数量后，扎断处理
$count = count($versions);
$fileMaxVersion = MiniConst::MAX_VERSION_COUNT;
if ($count >= $fileMaxVersion) {
$limit = $count - $fileMaxVersion + 1;
$versions = CUtils::mergeFileMetaVersion($versions, $limit);
}
array_push($versions, $version);
return serialize($versions);
}