What are potential pitfalls to watch out for when inserting data into a database using PHP, and how can they be avoided?

One potential pitfall when inserting data into a database using PHP is SQL injection attacks. To avoid this, always use prepared statements with parameterized queries to sanitize user input. 

// Connect to the 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 to the placeholders
$stmt->bindParam(':username', $username);
$stmt->bindParam(':email', $email);

// Set the parameters and execute the query
$username = $_POST['username'];
$email = $_POST['email'];
$stmt->execute();

Keywords

SQL injection data validation prepared statements PDO error handling

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