Php-vervolgkeuzelijst invullen vanuit mysql-database

Dit werkte ook, het is een aanpassing van janlindo's hierboven

                 <div class="form-group">
                                    Select Make <?php
                                    include '../db_config/dbcon.php';
                                    $sql = "SELECT * FROM vehicle_details";
                                    $result = $conn->query($sql);
                                    if ($result->num_rows > 0) {
                                        echo "<select name='vehicle_make'>";
                                        // output data of each row
                                        while($row = $result->fetch_assoc()) {
                                          echo "<option value='" . $row['vehicle_make'] . "'>" . $row['vehicle_make'] . "</option>";
                                        }
                                        echo "</select>";
                                    } 
                                    ?>
                                </div>