What are common challenges when creating a Votescript for a Minecraft server using PHP?

One common challenge when creating a Votescript for a Minecraft server using PHP is securely handling user input to prevent injection attacks. To solve this, always sanitize and validate user input before using it in queries to the database.

// Sanitize and validate user input before using it in queries
$username = filter_var($_POST['username'], FILTER_SANITIZE_STRING);
$password = filter_var($_POST['password'], FILTER_SANITIZE_STRING);

// Example of using sanitized input in a query
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username AND password = :password");
$stmt->bindParam(':username', $username);
$stmt->bindParam(':password', $password);
$stmt->execute();