Hello,
I am doing a hybrid implementation with the js and PHP libraries and I have been reading this article https://help.mixpanel.com/hc/en-us/articles/360001355146-Keeping-Properties-Consistent-Across-Client-Server-Libraries and trying what you say there without success, do you have any Code examples or tutorial? of how to pass default properties that the js library captures (browser, screen size, etc) and pass them to the PHP server side.
Regards