What are the binary cross-permission mini php classes
This article introduces the relevant knowledge of "what are the binary cross-permission micro php classes". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!
Be pretty:
1. Many-to-many cross scene assignment
2. New features of php-closure use, batch function array_walk/array_flip use
3. Bit operation & use case
Use the scene:
1. Common additions, deletions, modifications and queries (the Nth power value of 2 is stored in the database)
2. Authentication, third-party account binding, multi-category selection
The copy code is as follows:
