What are common pitfalls when using form mailers for participant registration in PHP?

One common pitfall when using form mailers for participant registration in PHP is not properly sanitizing user input, which can lead to security vulnerabilities such as SQL injection or cross-site scripting attacks. To solve this issue, always validate and sanitize user input before processing it in your PHP code. 

// Sanitize user input before processing
$name = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
$phone = filter_var($_POST['phone'], FILTER_SANITIZE_STRING);

// Validate email address
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    // Handle invalid email address
}

// Process the sanitized input
// (e.g. insert into database, send confirmation email, etc.)

Keywords

form mailers participant registration PHP validation security

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