How can PHP developers ensure secure and efficient database interactions in their code?

To ensure secure and efficient database interactions in PHP code, developers should use parameterized queries to prevent SQL injection attacks and optimize database queries to reduce load and improve performance. 

// Example of using parameterized queries to prevent SQL injection
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = :username');
$stmt->execute(['username' => $username]);
$user = $stmt->fetch();

// Example of optimizing database queries
$stmt = $pdo->query('SELECT * FROM users WHERE status = "active"');
$users = $stmt->fetchAll();

Keywords

SQL injection prepared statements PDO encryption input validation

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