What potential issues can arise when storing user favorites in an array in MySQL using PHP?

Storing user favorites in an array in MySQL using PHP can lead to scalability issues as the array can grow indefinitely, affecting performance. It is recommended to use a separate table to store user favorites with a one-to-many relationship to the users table. This will allow for better organization, querying, and scalability.

// Create a new table to store user favorites
$createTableQuery = "CREATE TABLE user_favorites (
                        id INT AUTO_INCREMENT PRIMARY KEY,
                        user_id INT,
                        favorite_id INT,
                        FOREIGN KEY (user_id) REFERENCES users(id)
                    )";

// Execute the query to create the table
mysqli_query($connection, $createTableQuery);