invisio v2.0

<?php
    session_start();
    include("../../../config/main_function.php");

$secure = "cAh3DrJACzw4RbU";
    $connection = connectDB($secure);

$member_id = mysqli_real_escape_string($connection, $_POST['member_id']);
    $sql_select = "SELECT * FROM tbl_member WHERE member_id = '$member_id' ";
    $res_select = mysqli_query($connection, $sql_select)  or die($connection->error);
    $row_select = mysqli_fetch_array($res_select);

mysqli_close($connection);
    ?>
 <div class="modal-header">
     <h4 class="modal-title">เปลี่ยนระดับสมาชิก</h4>
     <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
 </div>
 <div class="modal-body">
    <input type="hidden" id="member_id" name="member_id" value="<?php echo $member_id; ?>">
     <div class="mb-2">
         <label for="">ระดับสมาชิก</label><br>
         <select name="change_level" id="change_level" class="form-select  form-select-solid" style="width: 100%;">
             <option value="g9k1s" <?php echo ($row_select['register_level'] == 'g9k1s') ? "selected" : "" ?>>ทั่วไป</option>
             <option value="kki22" <?php echo ($row_select['register_level'] == 'kki22') ? "selected" : "" ?>>วิสามัญ</option>
             <option value="x9fkq" <?php echo ($row_select['register_level'] == 'x9fkq') ? "selected" : "" ?>>สามัญ</option>
             
         </select>
     </div>
 </div>
 <div class="modal-footer">
     <button type="button" class="btn btn-primary"  onclick="SubmitChangeLevel()"><i class="fa fa-check"></i>&nbsp;บันทึก</button>
     <button type="button" class="btn btn-white" data-dismiss="modal">ปิด</button>
 </div>
 <script>
     $(document).ready(function() {
         $(".form-select").select2();
     });
 </script>