Column differentiation solution for many-to-many permission management (PHP)

Permission management is an important aspect in many applications, especially when multiple users and multiple columns are involved. In this article, we will discuss how to implement a solution that differentiates columns and supports many-to-many permissions. We will use PHP programming language to implement this solution.

First, we need to create a database to store the relationship between users, columns and permissions. We can create three tables: users (user table), categories (column table) and permissions (permission table). Here is the structure of these tables:

CREATE TABLE users (
    id INT PRIMARY KEY AUTO_INCREMENT,
    name VARCHAR(50) NOT NULL
);