prepare("UPDATE users SET balance_usdt = balance_usdt - ? WHERE id = ?")->execute([$amount, $user['id']]); $success = "Exchanged $amount USDT for " . number_format($receive, 6) . " $to_coin"; $user['balance_usdt'] -= $amount; } } else { $error = "Only USDT to Crypto exchange is currently supported in this demo."; } } catch (Exception $e) { $error = 'Exchange failed: ' . $e->getMessage(); } } } ?>

Zero fees, instant settlement

: USDT

Estimated Price 1 BTC ≈ 43,250 USDT