Are there specific characters that should be filtered out of form data before sending it via email in PHP?

When sending form data via email in PHP, it is important to filter out any characters that could potentially be used for malicious purposes, such as SQL injection or cross-site scripting attacks. It is recommended to use PHP's `filter_input` function with appropriate filters to sanitize the form data before including it in the email content. 

// Sanitize form data before sending via email
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING);
$email = filter_input(INPUT_POST, 'email', FILTER_SANITIZE_EMAIL);
$message = filter_input(INPUT_POST, 'message', FILTER_SANITIZE_STRING);

// Include sanitized form data in email content
$email_content = "Name: $name\n";
$email_content .= "Email: $email\n";
$email_content .= "Message: $message\n";

// Send email
$to = 'recipient@example.com';
$subject = 'Contact Form Submission';
$headers = 'From: ' . $email;

mail($to, $subject, $email_content, $headers);

Keywords

PHP form data email filtering characters

Related Questions