什么是group_identifier，我将如何使用它？

Question

我从https://likebtn.com/en/生成了一个赞按钮，我试图通过将其与评论一起回显，将其实现到我的评论系统中，但是当我选择一个赞按钮时，注释在每个注释上显示相同的数字值。

comments.inc.php

<?php

function getComments($conn) {
  $sql = "SELECT * FROM comments";
  $result = $conn->query($sql);
  while($row = $result->fetch_assoc()) {
    $id = $row['uid'];
    $sql2 = "SELECT * FROM users WHERE id='$id'";
    $result2 = $conn->query($sql2); 
    if ($row2 = $result2->fetch_assoc()) {
       echo "<div class='comment-box'><p>";
    echo $row2['first_name']."<br>";  
    echo $row['date']."<br>";   
    echo nl2br($row['message']);
    echo '<span class="likebtn-wrapper" data-theme="custom" data-icon_l_url="https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/9271a440-f40d-481c-9558-6ff2560a2ce5/ddc06jv-d034c295-b4ee-4cb7-a5be-4868d5ea47bd.png?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7InBhdGgiOiJcL2ZcLzkyNzFhNDQwLWY0MGQtNDgxYy05NTU4LTZmZjI1NjBhMmNlNVwvZGRjMDZqdi1kMDM0YzI5NS1iNGVlLTRjYjctYTViZS00ODY4ZDVlYTQ3YmQucG5nIn1dXSwiYXVkIjpbInVybjpzZXJ2aWNlOmZpbGUuZG93bmxvYWQiXX0.cofpzee61ElSqNpoVtvkV-5IFyOThaMRwFF8NrIPtWs" data-icon_d_url="https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/9271a440-f40d-481c-9558-6ff2560a2ce5/ddc06yv-4bf21a01-e074-4a2a-966e-5497ef6a472c.png?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7InBhdGgiOiJcL2ZcLzkyNzFhNDQwLWY0MGQtNDgxYy05NTU4LTZmZjI1NjBhMmNlNVwvZGRjMDZ5di00YmYyMWEwMS1lMDc0LTRhMmEtOTY2ZS01NDk3ZWY2YTQ3MmMucG5nIn1dXSwiYXVkIjpbInVybjpzZXJ2aWNlOmZpbGUuZG93bmxvYWQiXX0.-KdkfGAAe9kMfjHaN3BE0FKETbhrtcli3_BlTcoF_gM" data-bg_c="rgba(255,255,255,0)" data-brdr_c="rgba(255,255,255,0)" data-identifier="i18n" data-i18n_like=" " data-rich_snippet="true" data-i18n_dislike=" " data-i18n_after_like=" "></span>
<script>(function(d,e,s){if(d.getElementById("likebtn_wjs"))return;a=d.createElement(e);m=d.getElementsByTagName(e)[0];a.async=1;a.id="likebtn_wjs";a.src=s;m.parentNode.insertBefore(a, m)})(document,"script","//w.likebtn.com/js/w/widget.js");</script>
<!-- LikeBtn.com END -->';
        echo "</p>";
           if (isset($_SESSION['id'])) {
             if ($_SESSION['id'] == $row2['id']) {
           echo "<form class='delete-form' method='POST' action='".deleteComments($conn)."'>
          <input type='hidden' name='cid' value='".$row['cid']."'>
          <button type='submit' name='commentDelete'>Delete</button>
        </form>";

          } else {
          echo "<form class='edit-form' method='POST' action='replycomment.php'>
          <input type='hidden' name='cid' value='".$row['cid']."'>
          <input type='hidden' name='uid' value='".$row['uid']."'>
          <input type='hidden' name='date' value='".$row['date']."'>
          <input type='hidden' name='reply' value='".$row['reply']."'>
          <button>Reply</button>
        </form>";   
       }
     }  else {
       echo "<p class='commentmessage'>You need to be logged in to reply</p>";
     }
     echo "</div>";     
    }
  }
}