What are common pitfalls when using PHP formmailers on websites?

Common pitfalls when using PHP formmailers on websites include not properly sanitizing user input, leaving the form vulnerable to injection attacks. To solve this issue, always use PHP functions like htmlspecialchars() or htmlentities() to sanitize user input before sending it via email. 

// Sanitize user input before sending via email
$name = htmlspecialchars($_POST['name']);
$email = htmlspecialchars($_POST['email']);
$message = htmlspecialchars($_POST['message']);

// Send sanitized data via email
mail('recipient@example.com', 'Contact Form Submission', "Name: $name\nEmail: $email\nMessage: $message");

Keywords

PHP formmailers security vulnerabilities input validation email injection

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