form_id.html

        <form action="proses/proses-id.php" method="POST">
            <table class="tabel-beli">
                <tr>
                    <td>Username</td>
                    <td>:</td>
                    <td><input type="text" name="username" placeholder="masukan username" /></td>
                </tr>
                <tr>
                    <td>Password</td>
                    <td>:</td>
                    <td><input type="password" name="password" placeholder="password"></td>
                </tr>
                <tr>
                    <td>Metode Pembayaran</td>
                    <td>:</td>
                    <td><select name="bayar">
                            <option>Telkomsel</option>
                            <option>BNI</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td><input type="submit" value="Beli"></td>
                </tr>
            </table>
        </form>