How can PHP developers ensure data security and integrity when reading files and storing them in a database?

To ensure data security and integrity when reading files and storing them in a database, PHP developers should validate user input, sanitize data, and use prepared statements to prevent SQL injection attacks. Additionally, developers should encrypt sensitive data before storing it in the database and implement proper access control to restrict unauthorized access to the files and database. 

// Validate user input
$input = $_POST['input'];
if (!filter_var($input, FILTER_VALIDATE_EMAIL)) {
    die("Invalid input");
}

// Sanitize data
$clean_input = filter_var($input, FILTER_SANITIZE_STRING);

// Use prepared statements to prevent SQL injection
$stmt = $pdo->prepare("INSERT INTO table (column) VALUES (:input)");
$stmt->bindParam(':input', $clean_input);
$stmt->execute();

// Encrypt sensitive data before storing in the database
$encrypted_data = openssl_encrypt($clean_input, 'AES-256-CBC', 'secret_key', 0, 'secret_iv');

// Implement access control to restrict unauthorized access
if ($_SESSION['role'] !== 'admin') {
    die("Unauthorized access");
}

Keywords

data security integrity PHP developers reading files storing in database

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