whatsapp_optin

connect_error) { die("Connection failed: " . $conn->connect_error); } $student_id = $_POST['student_id']; $stmt = $conn->prepare("UPDATE students SET prefers_whatsapp = 1 WHERE id = ?"); $stmt->bind_param("i", $student_id); if ($stmt->execute()) { $success = true; } else { $error = "Database update failed."; } $stmt->close(); $conn->close(); } ?> ?>