php - 显示 mysql 表中的所有行，然后提供删除特定行的选项

Question

我希望能够显示数据库表中的所有条目，并通过每个条目让用户能够删除特定的条目。

我目前正在使用 for each 循环，循环遍历数据库以展示每个条目。

$result = mysql_query("SELECT * FROM KeepScores");


$fields_num = mysql_num_fields($result);

echo "<table><tr>";
// printing table headers


echo "<td>Recent Posts</td>";

echo "</tr>\n";
// printing table rows
while($row = mysql_fetch_row($result))
{
echo "<tr>";

// $row is array... foreach( .. ) puts every element
// of $row to $cell variable
foreach($row as $cell)
    echo "<td>$cell</td>";

echo "</tr>\n";
 }

如何添加一个删除按钮，每个按钮都会出现并从数据库表中删除条目？

Answer 1

你可以用表单来做:

//main.php

<?php $result = mysql_query("SELECT * FROM KeepScores"); ?>

<table>
  <tr>
    <td>Recent Posts</td>
  </tr>
  <?php while($row = mysql_fetch_array($result)) : ?>
  <tr>
    <td><?php echo $row['field1']; ?></td>
    <td><?php echo $row['field2']; ?></td>
    <!-- and so on -->
    <td>
      <form action="delete.php" method="post">
        <input type="hidden" name="delete_id" value="<?php echo $row['id']; ?>" />
        <input type="submit" value="Delete" />
      </form>
    </td>
  </tr>
  <?php endwhile; ?>
</table>

//delete.php:

<?php
if(isset($_POST['delete_id'] && !empty($_POST['delete_id']))) {
  $delete_id = mysql_real_escape_string($_POST['delete_id']);
  mysql_query("DELETE FROM KeepScores WHERE `id`=".$delete_id);
  header('Location: main.php');
}

---

或者您可以使用 jQuery 和 AJAX 来实现:

//main.php

<?php $result = mysql_query("SELECT * FROM KeepScores"); ?>

<table>
  <tr>
    <td>Recent Posts</td>
  </tr>
  <?php while($row = mysql_fetch_array($result)) : ?>
  <tr id="<?php echo $row['id']; ?>">
    <td><?php echo $row['field1']; ?></td>
    <td><?php echo $row['field2']; ?></td>
    <!-- and so on -->
    <td>
      <button class="del_btn" rel="<?php echo $row['id']; ?>">Delete</button>
    </td>
  </tr>
  <?php endwhile; ?>
</table>

<script>
  $(document).ready(function(){
    $('.del_btn').click(function(){
       var del_id = $(this).attr('rel');
       $.post('delete.php', {delete_id:del_id}, function(data) {
          if(data == 'true') {
            $('#'+del_id).remove();
          } else {
            alert('Could not delete!');
          }
       });
    });
  });
</script>

//delete.php

<?php
    if(isset($_POST['delete_id'] && !empty($_POST['delete_id']))) {
      $delete_id = mysql_real_escape_string($_POST['delete_id']);
      $result = mysql_query("DELETE FROM KeepScores WHERE `id`=".$delete_id);
      if($result !== false) {
        echo 'true';
      }
    }

---

这一切都未经测试，并且肯定需要针对您的特定项目进行一些调整，但我认为您明白了，我希望它能有所帮助。

下次，如果您询问有关数据库的问题，请发布您的架构。