对模态的回声不起作用

Question

所以我试图在我的程序中使用模态，见下文：

   <?php 
                  mysql_select_db($database_dbcon, $dbcon);
                  $query_igp = "SELECT SUM(price) AS prices, event_id FROM igp_payable WHERE event_id='".$row_events['event_id']."'";
                  $igp = mysql_query($query_igp, $dbcon) or die(mysql_error());
                  $row_igp = mysql_fetch_assoc($igp);
                  $totalRows_igp = mysql_num_rows($igp);
                ?>
                                <td><?php echo "₱ ". number_format($row_igp['prices'])?></td>
                                <td><?php if ($row_events["event_status"]== "Active"){?>
                                    <span class="label label-success"><?php echo $row_events['event_status']; ?></span>
                                    <?php } else {?>
                                    <span class="label label-danger"><?php echo $row_events['event_status']; ?></span> <?php }?>
                                </td>
                                <td><?php if ($row_events["event_status"]== "Inactive"){?>
                                    <a href="event_set_status.php?event_id=<?php echo $row_events['event_id']; ?>">Set as Active</a>
                                    <?php } else {?>
                                    <a href="" data-toggle="modal" data-target="#myModal">Set as Inactive</a> <?php }?>
                                    <!--&nbsp;&nbsp;|&nbsp;&nbsp; <a href="#">Edit</a>-->
                                </td>
                            </tr>
                            <?php } while ($row_events = mysql_fetch_assoc($events)); ?>
                        </tbody>
                        <tr>
                          <!--<td colspan="5"><a href="#">Add Event</a></td>-->
                      </tr>
                    </table>
              </div><!--col-lg-12-->
            </div><!-- /.row -->
            <div class="col-lg-6">
                            <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
                                <div class="modal-dialog">
                                    <div class="modal-content">
                                        <div class="modal-header">
                                            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                                            <h4 class="modal-title" id="myModalLabel">Closing the "<?php echo $row_events["event_name"]; ?>"</h4>
                                        </div>
                                        <div class="modal-body">
                                        Closing the selected event may remove the linked account titles.
                                        </div>
                                        <div class="modal-footer">
                                            <button type="button" class="btn btn-default btn-sm" data-dismiss="modal">Cancel</button>
                                            <a href="event_set_status.php?event_id=<?php echo $row_events["event_id"];?>" class="btn btn-primary btn-sm">Close and Save</a>
                                            <button type="button" class="btn btn-primary btn-sm">Save Only</button>
                                        </div>
                                    </div>
                                    <!-- /.modal-content -->
                                </div>
                                <!-- /.modal-dialog -->
                            </div>

问题出在我点击<a href="event_set_status.php?event_id=<?php echo $row_events['event_id']; ?>" class="btn btn-primary btn-sm">Close and Save</a>时 回显的值为null，输出为： event_set_status.php？event_id =？ 任何建议，这是我第一次使用模态。

我更新了我的代码，你们可以看到整个代码甚至我的查询。表部分工作正常，问题仅在模态部分