In the context of PHP development, what steps should be taken to ensure data integrity and security when handling sensitive information like passwords?

To ensure data integrity and security when handling sensitive information like passwords in PHP development, it is crucial to properly hash passwords before storing them in the database. This helps prevent unauthorized access to the actual passwords even if the database is compromised. Additionally, using prepared statements and parameterized queries can help prevent SQL injection attacks, further enhancing the security of the application.

// Hashing and storing a password securely
$password = 'mySecurePassword';
$hashedPassword = password_hash($password, PASSWORD_DEFAULT);

// Verifying a password
$enteredPassword = 'mySecurePassword';
if (password_verify($enteredPassword, $hashedPassword)) {
    echo 'Password is correct!';
} else {
    echo 'Password is incorrect!';
}