What are some potential performance issues to consider when dealing with large datasets in PHP and MySQL?

One potential performance issue when dealing with large datasets in PHP and MySQL is slow query execution times. This can be addressed by optimizing the database queries, using indexes on frequently accessed columns, and limiting the amount of data retrieved at once. 

// Example of optimizing a query by using indexes on frequently accessed columns
$query = "SELECT * FROM users WHERE username = 'example' AND status = 'active'";
$result = mysqli_query($connection, $query);

// Create indexes on the 'username' and 'status' columns in the 'users' table
CREATE INDEX idx_username ON users (username);
CREATE INDEX idx_status ON users (status);

Keywords

PHP MySQL large datasets optimization indexing

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