How can PHP developers ensure consistent case sensitivity when comparing hashed passwords stored in a database with user input?

When comparing hashed passwords stored in a database with user input, PHP developers can ensure consistent case sensitivity by using a case-insensitive comparison function like `hash_equals()` instead of a regular comparison operator. This function compares two strings in a way that is not vulnerable to timing attacks, ensuring a secure and consistent comparison regardless of case sensitivity. 

$storedPassword = "hashed_password_from_database";
$userInputPassword = $_POST['password'];

if (hash_equals($storedPassword, $userInputPassword)) {
    // Passwords match
    // Proceed with authentication
} else {
    // Passwords do not match
    // Handle incorrect password
}

Keywords

password hashing case sensitivity password_verify password_hash password compatibility

Related Questions