What are some common pitfalls when using PHP for form processing and data storage?

One common pitfall when using PHP for form processing and data storage is not properly sanitizing user input, which can lead to SQL injection attacks. To prevent this, always use prepared statements with parameterized queries when interacting with a database. 

// Connect to database
$pdo = new PDO('mysql:host=localhost;dbname=mydatabase', 'username', 'password');

// Prepare a SQL statement with placeholders
$stmt = $pdo->prepare('INSERT INTO users (username, email) VALUES (:username, :email)');

// Bind parameters and execute the statement
$stmt->bindParam(':username', $_POST['username']);
$stmt->bindParam(':email', $_POST['email']);
$stmt->execute();

Keywords

SQL injection XSS attacks form validation file uploads session management

Related Questions