What are some common pitfalls to avoid when using PHP to interact with media players on a website?

One common pitfall to avoid when using PHP to interact with media players on a website is not properly sanitizing user input before passing it to the media player. This can leave your website vulnerable to security risks such as cross-site scripting attacks. To prevent this, always sanitize and validate user input before using it in your PHP code.

// Sanitize user input before passing it to the media player
$userInput = $_POST['user_input'];
$cleanInput = htmlspecialchars($userInput);

// Use the sanitized input in your code
echo "<video src='$cleanInput'></video>";