What are some common pitfalls to avoid when setting up a newsletter system with PHP?

One common pitfall when setting up a newsletter system with PHP is not properly sanitizing user input, which can lead to security vulnerabilities such as SQL injection attacks. To avoid this, always use prepared statements when interacting with a database to prevent malicious input. 

// Example of using prepared statements to sanitize user input
$stmt = $pdo->prepare("INSERT INTO newsletter_subscribers (email) VALUES (:email)");
$stmt->bindParam(':email', $email);
$stmt->execute();

Keywords

SQL injection XSS attacks email deliverability SMTP configuration PHPMailer

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