@g2landrew,
Thank you for posting your requirements. Unfortunately, I have not found to do the same by using Aspose.Slides Cloud SDK for PHP.
We have opened the following new ticket(s) in our internal issue tracking system and will consider the feature according to the terms mentioned in Free Support Policies.
Issue ID(s): SLIDESCLOUD-1802
You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.
The issues you found earlier (filed as SLIDESCLOUD-1802) have been fixed in Aspose.Slides Cloud SDK for .NET 23.9.
You can check all fixes on the Release Notes page.