Question

我的数据库中有一些表，我想在点击按钮上删除它选择选项标签

    <?php 
  $db = mysqli_connect('localhost','root','','post15');
  if (isset($_POST['submit2'])) {
  $query = $db->query("DELETE FROM posted WHERE title");
  if ($query) {
    echo "Post DELETED";
  }

 }?>
  <form method="post" action="admin.php">
     <select name="categoryBox">

            <?php 
                 $query = $db->query("SELECT * FROM posted");
                    while ($row = $query->fetch_object()){
                        echo "<option value='".$row->id."'>".$row->title."
              </option>";
                    }
            ?>

            </select>
        <input type="submit" name="submit2">    
    </form>

Answer 1

您提供的代码不起作用，您尝试使用标题删除，但您的下拉选项值不是标题，因此您应该查看删除所选标题的ID

 if (isset($_POST['submit2'])) {
  $query = $db->prepare("DELETE FROM posted WHERE id = ? ");
  $query->bind_param("i",$_POST['categoryBox']);
  if ($query->execute()) {
    echo "Post DELETED";
  }

Answer 2

试试这个。

  <form method="post">
Id: < input type="text" name="id">
<input  type="submit" value="submit">
</form>
<?php 
$_POST['id']
$db=mysql_connect("localhost","root","");
mysql_select_db("post15",$db);
mysql_query("DELETE FROM posted WHERE id=$id",$db);
echo"ID ".$_POST['id']." has been Deleted ";
?>

我的数据库中有一些表，我想在选项标签上选择的单击按钮上删除它

2 个答案: