What potential pitfalls should beginners be aware of when creating a PHP survey?

Beginners should be aware of potential security vulnerabilities when creating a PHP survey, such as SQL injection attacks or cross-site scripting. To prevent these issues, it is important to sanitize user input and use prepared statements when interacting with a database. 

// Sanitize user input to prevent SQL injection
$answer = filter_var($_POST['answer'], FILTER_SANITIZE_STRING);

// Use prepared statements to interact with the database
$stmt = $pdo->prepare("INSERT INTO survey_answers (answer) VALUES (:answer)");
$stmt->bindParam(':answer', $answer);
$stmt->execute();

Keywords

SQL injection cross-site scripting form validation CSRF protection data sanitization

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