prepare($sql); $q->execute(array($id)); $data = $q->fetch(PDO::FETCH_ASSOC); $count = $data['count']; Database::disconnect(); if ($count > 0) { // Jika UID sudah ada, tampilkan pesan peringatan echo ""; // Redirect kembali ke user data.php echo ""; exit; // Keluar dari skrip setelah melakukan redirect } else { // Jika UID belum ada, lanjutkan proses insert data $pdo = Database::connect(); $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sql = "INSERT INTO table_nodemcu_rfidrc522_mysql (name, id, gender, umur, mobile) VALUES (?, ?, ?, ?, ?)"; $q = $pdo->prepare($sql); $q->execute(array($name, $id, $gender, $umur, $mobile)); Database::disconnect(); header("Location: user data.php"); } } ?>