$user['balance_usdt']) {
$error = 'Insufficient balance.';
} elseif (empty($address)) {
$error = 'Please enter withdrawal address.';
} elseif (!password_verify($security_password, $user['security_password'])) {
$error = 'Incorrect trading password.';
} else {
try {
db()->beginTransaction();
// Deduct balance
$stmt = db()->prepare("UPDATE users SET balance_usdt = balance_usdt - ? WHERE id = ?");
$stmt->execute([$amount, $user['id']]);
// Record transaction (assuming a transactions table exists or just for mock)
// For now just success message
db()->commit();
$success = 'Withdrawal request submitted successfully.';
$user['balance_usdt'] -= $amount;
} catch (Exception $e) {
db()->rollBack();
$error = 'Withdrawal failed: ' . $e->getMessage();
}
}
}
?>