Question

我正在为用户创建的每个“注释”生成删除按钮。但是，无论您单击哪个删除，它都会删除最近保存的注释，而不是与注释对应的注释。我假设我的隐藏字段'deleteID'出了问题。

<!-- connections.php connects to the database -->
<?php require 'connections.php'; ?>

<!-- check to make sure the user is logged in,
     if not then redirect them to login.php -->
<?php session_start();
if(isset($_SESSION["UserID"])){ 
} else {
    header('Location: Login.php');
    die();
}?>

<!-- $result is a query containing all the notes
     of the current user -->
<?php $UserID = $_SESSION["UserID"];
      $result = mysqli_query($con, "SELECT * FROM notes WHERE UserID = '$UserID'");    
?>

<!-- when you click 'save' upload the new note 
     to the database and refresh the page.
     when you click 'delete' remote the note
     that goes with that button from the database -->
<?php  if(isset($_POST['save'])) {

        session_start();
        $note = $_POST['note'];
        $UserID = ($_SESSION["UserID"]);

        $sql = $con->query("INSERT INTO notes (UserID, note)Values('{$UserID}','{$note}')");

        header('Location: Account.php');

    } else if (isset($_POST['delete'])){
        $deleteID = $_POST['deleteID'];

        $sql = $con->query("DELETE FROM notes WHERE noteID = '$deleteID'");

        header('Location: Account.php');

    } else if (isset($_POST['edit'])){


}?>

<!DOCTYPE HTML>
<html lang="en">
    <head>
        <title>My Account</title>
        <link rel="stylesheet" type="text/css" href="stylesheet.css">
    </head>

    <body>

        <h1 class="titleAct">Welcome</h1> 

        <form action="" method="post" name="notesubmit" id="notesubmit">

                <div>
                    <textarea name="note" cols="50" rows="4" form="notesubmit" id="noteinput">New Note
                    </textarea>   
                </div>

                    <input name="save"  type="submit" class="button" id="save" value="Save">  

            <!-- Whenever a note is saved, print out the
                 note with timestamp followed by the edit
                 and delete buttons for each note -->
            <?php while ($row = mysqli_fetch_array($result)): ?>
                <?php $note = $row['note'];?>
                <?php $date = $row['time'];?>
                <?php $noteID = $row['noteID'];?>

        <div id="note">
            <p class="note"><?php echo $date; ?></br> ---------------- </br><?php echo $note; ?> </p>
        </div>


                <input name="deleteID" type="hidden" id="hidden<?php echo $noteID;?>" value="<?php echo $noteID; ?>">
                <input name="delete"  type="submit" class="button" value="Delete">

            <?php endwhile; ?>
        </form>

        <div>
            <a class="link" href="Logout.php">Logout</a>
            <div>
            <a class="link" href="Deactivate.php">Deactivate My Account</a>
            </div>
        </div>

    </body>
</html>

Answer 1

我认为它根本不是删除 - 而是带有注释的div - 每个都有相同的id，因为它们在while循环中，因此每个note div的id都是“note”

<div id="note">

它应该是

   <div id="note<?php echo $noteID;?>";

Answer 2

错误似乎在输入的名称中。应与您在ID部分中设置的值相同。

像这样：

<input name="hidden<?php echo $noteID;?>" type="hidden" id="hidden<?php echo $noteID;?>" value="<?php echo $noteID; ?>">

否则，您的所有输入都具有相同的名称，并且最后一个输入执行查询。

修改

直接在提交按钮中输入要删除的值的名称，如下所示：

<input name="delete-<?php echo $noteID;?>" type="submit" class="button" value="Delete">

然后，您可以获取$_POST数组中的值和explode() -分隔符上的值，以获取ID值。

Answer 3

您还有一个表单的多个提交输入 - 一个用于触发保存，每个用于每个回显删除注释，因此触发删除提交功能将首先触发保存提交 - 因此$ _POST [' save']将在$ _POST ['delete']之前执行。这可能是改变最后一个输入音符而不是触发动作的动作背后的问题。

我建议将添加注释功能拆分为与删除注释功能不同的形式。您可以使用相同的if else逻辑，这应该在新版本中按预期工作，因为您实际上是在发布您期望的信息。

PHP删除当前'note'不起作用

3 个答案: