单击批准按钮后，需要将特定行存储到数据库中

Question

因此，关于我的困境，我已经对我的网站进行了编码，以将重新安排的类的列表返回到表中，供管理员批准或不批准。从数据库中检索此重新安排的类的列表。

我要查找的是，当单击“批准”按钮时，代码会将特定行的数据存储到数据库（let's say I want just the first row's data to be approved）中。我怎么做？我想尽可能使用主键来执行此操作，但是据我了解，主键不稳定，例如，如果删除了该列表中的条目，则该键不会被替换，而是会自动递增。

这是我的表格代码：

<div class="dashboard-content__panel " data-panel-id="class_replacement">
    <div class="dashboard-list report-content">
       <div id="report" class="panel panel-primary panel-table table-responsive reportTable" style="border:none; ">
         <div class="panel-body " >
           <table id="report-table" class="table table-hover"  width="100%" >
             <thead>
               <tr>
                 <th>Subject Code</th>
                 <th>Subject Rescheduling Date and Subject Start Time</th>
                 <th>Duration (hours)</th>
                 <th>Status</th>
                 <th>Select Venue</th>
                 <th>Approve/Disapprove</th>

               </tr>
             </thead>
             <tbody>
               <?php
               $conn = mysqli_connect("localhost", "root", "", "fyp1web");
               if ($conn -> connect_error) {
                 die("Connection Failed: ". $conn-> connect_error);
               }

               $sql = "SELECT * from class_rescheduling";
               $result = $conn-> query($sql);


               while ($rs = $result-> fetch_assoc()) {
               ?>
               <tr>
               <td><?php echo $rs["newSubjectID"]; ?></td>
               <td><?php echo $rs["newDateTime"]; ?></td>
               <td><?php echo $rs["newDuration"]; ?></td>
               <td><?php echo $rs["newStatus"]; ?></td>
               <td> <select name="classname">
               <?php
               $sql2 = "SELECT className FROM class_rooms";
               $result2 = $conn-> query($sql2);
               while ($rs1 = mysqli_fetch_array($result2)) {
               ?>
               <option value="<?php echo $rs1['className']; ?>"><?php echo $rs1["className"]; ?></option>
               <?php
               }
               ?>
               </select></td>
               <td><button class='btn' type='submit' name='approve'>Approve</button><button class='btn' type='submit' name='disapprove'>Disapprove</button></td>
               </tr>
             <?php
             }
             ?>
             </tbody>
                 <tfoot>
                 </tfoot>
          </table>
        </div>
      </div>
   </div>
  </div>