What are the potential issues with using an i-frame for a form in PHP?

One potential issue with using an i-frame for a form in PHP is that it may not be as secure as embedding the form directly into the page. This can make it easier for malicious users to manipulate the form data. To solve this issue, you can implement server-side validation and sanitization of the form data to ensure its integrity.

// Server-side validation and sanitization of form data
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = filter_var($_POST["name"], FILTER_SANITIZE_STRING);
    $email = filter_var($_POST["email"], FILTER_SANITIZE_EMAIL);
    
    // Perform further validation and processing of form data
}