What are some common mistakes when trying to insert form data into a database using PHP?

One common mistake when trying to insert form data into a database using PHP is not properly sanitizing the input data, which can leave the application vulnerable to SQL injection attacks. To solve this issue, you should always use prepared statements with parameterized queries to securely insert data into the database. 

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

// Prepare the SQL statement
$stmt = $pdo->prepare("INSERT INTO users (username, email) VALUES (:username, :email)");

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

// Execute the statement
$stmt->execute();

Keywords

SQL injection data validation prepared statements PDO error handling

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