(PHP 5, PHP 7, PHP 8)
COMPersistHelper::SaveToStream — Save object to stream
$stream): boolSaves an object to the specified stream.
stream
成功時(shí)返回 true， 或者在失敗時(shí)返回 false。
A com_exception is thrown if the associated object does neither implement the COM interface IPersistStream nor IPersistStreamInit, or when calling the IPersistStream::Save() method failed.