false, "message" => "Invalid request."]); exit; } function convert_persian_numbers ($string) { $newNumbers = range(0, 9); // 1. Persian HTML decimal $persianDecimal = array('۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹'); // 2. Arabic HTML decimal $arabicDecimal = array('٠', '١', '٢', '٣', '٤', '٥', '٦', '٧', '٨', '٩'); // 3. Arabic Numeric $arabic = array('٠', '١', '٢', '٣', '٤', '٥', '٦', '٧', '٨', '٩'); // 4. Persian Numeric $persian = array('۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹'); $string = str_replace($persianDecimal, $newNumbers, $string); $string = str_replace($arabicDecimal, $newNumbers, $string); $string = str_replace($arabic, $newNumbers, $string); return str_replace($persian, $newNumbers, $string); } $otpEntered = convert_persian_numbers($_POST['otp']); $otpSession = $_SESSION['otp'] ?? null; $otpAttempts = $_SESSION['otp_attempts'] ?? 0; if ($otpAttempts <= 0) { echo json_encode(["success" => false, "message" => "Max attempts reached."]); exit; } if ($otpEntered == $otpSession) { $_SESSION['otp_verified'] = true; echo json_encode(["success" => true, "message" => "OTP verified."]); } else { $_SESSION['otp_attempts']--; echo json_encode(["success" => false, "message" => "Incorrect OTP. Attempts left: " . $_SESSION['otp_attempts']]); } ?>