php - Data synchronization between mini program and official account

Question

There is a project that was previously developed based on the WeChat public account and now it is a small program.
How to synchronize the data of the two people? The WeChat public account obtains user information through authorization. IDE
The small program is here How about the side?

Answer 1

Achieved through the WeChat open platform, and then convert the previous UserID content into UnionID storage