Are there any potential security risks to be aware of when using PHP email forms?

One potential security risk when using PHP email forms is the possibility of injection attacks, where malicious code can be inserted into the form fields. To prevent this, it is important to sanitize and validate user input before processing the form data. This can be done by using PHP functions such as htmlspecialchars() to encode special characters and filter_var() to validate email addresses. 

// Sanitize and validate email input
$email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);

// Encode special characters in message
$message = htmlspecialchars($_POST['message']);

// Process the form data
// (Add your code for sending the email here)

Keywords

PHP email forms security risks cross-site scripting SQL injection

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