How can PHP developers avoid redundancy when creating multiple tables for storing user data in a database?

To avoid redundancy when creating multiple tables for storing user data in a database, PHP developers can use a single table with a flexible structure that can accommodate all necessary user data fields. This can be achieved by including a column for the type of data being stored and using conditional statements to handle different data types. By doing so, developers can reduce the number of tables needed and make the database more efficient. 

CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    username VARCHAR(50) NOT NULL,
    email VARCHAR(100) NOT NULL,
    type ENUM('admin', 'user') NOT NULL,
    data TEXT NOT NULL
);

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