What are some common pitfalls when using PHP for form submission on a website?

One common pitfall when using PHP for form submission is not properly sanitizing user input, which can leave your website vulnerable to SQL injection attacks. To solve this issue, always use prepared statements or parameterized queries to safely interact with your database. 

// Example of using prepared statements to insert form data into a database

// Establish a database connection
$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 cross-site scripting form validation CSRF attacks error handling

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