How can developers ensure data privacy and security when working with user information in PHP applications?

Developers can ensure data privacy and security in PHP applications by implementing secure coding practices, using parameterized queries to prevent SQL injection attacks, validating and sanitizing user input, encrypting sensitive data, and implementing proper access controls. 

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

Keywords

SQL injection cross-site scripting password hashing encryption secure sessions

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