Question

我有删除文章的问题。我有2个文件（article.php，delete.php）。当我在article.php中需要文件delete.php时，它不是删除文章，而是当我自己打开它时..只是delete.php，它有效。我不知道为什么会这样。有人可以帮帮我吗？谢谢。下面的文件。

这是article.php：

<?php

session_start();

include_once('../connect.php');
include_once('admin.php');
include_once('../includes/article.php');

if(isset($_SESSION["user_id"])){
  $query=$pdo->prepare("SELECT * FROM users WHERE id = 
  ".$_SESSION["user_id"]);
  $query->execute();
  $row=$query->fetch(PDO::FETCH_ASSOC);

  if($row['privileges']==1){
  ?>
  <html>
   <head>
    <title>CMS Tutorial</title>
  <link rel="stylesheet" href="assets/style.css" />
</head>
<body>
    <br/>
    <div class="options">
      <img src="../images/add.png" width="20px" height="20px" style="float:left;"><form method="post"><input class="article" type="submit" name="add" value="Pridať článok">
      </form>
      <img src="../images/delete.png" width="20px" height="20px" style="float:left;"><form method="post"><input class="article" type="submit" name="delete" value="Odstrániť článok"></form>
        <img src="../images/edit.png" width="20px" height="20px" style="float:left;"><form method="post"><input class="article" type="submit" name="edit" value="Upraviť článok"></form>
  </div>
  <?php
  if(isset($_POST['add'])){
    require_once('add.php');
  }else{
    if(isset($_POST['delete'])){
      require_once('delete.php');
  }else{
    if(isset($_POST['edit'])){
      require_once('edit.php');
  }}}?>
</body>
</html>

  <?php
  } else{
  header('Location: ../index.php');
  }
 } else{
 header('Location: ../index.php');
 }
 ?>

这是delete.php：

  <?php

  session_start();

  include_once('../connect.php');
  include_once('../includes/article.php');

  $article= new Article;

  if(isset($_SESSION['user_id'])){

   if(isset($_POST['id'])){
    $id=$_POST['id'];

    $query=$pdo->prepare('DELETE FROM articles WHERE article_id=?');
    $query->bindValue(1,$id);
    $query->execute();

    header('Location: ../index.php');
    }

    $articles=$article->fetch_all();

    ?>
    <html>
     <head>
      <link rel="stylesheet" href="assets/style.css" />
    </head>
      <body>
       <div class="container">
       <br/>
       <h4>Zvoľte článok, ktorý chcete odstrániť:</h4>
       <form action="" method="post" class="addarticle">
        <select name="id">
         <?php foreach($articles as $article){?>
        <option value="<?php echo $article['article_id']; ?>"><?php echo 
         $article['article_title']; ?></option>
         <?php } ?>
        </select>
       <input type="submit" value="Odstrániť článok">
      </form>
      </div>
    </body>
   </html>
  <?php
  } else{
   header('Location: ../index.php');
   }

   ?>

Answer 1

您应该确保正好调用session_start一次：

if(session_id() == '') {
    session_start();
}

现在你的问题。当您点击删除按钮时，系统会提交form，并且发送的唯一数据是 delete =Odstrániťčlánok，此处不会发送id。您需要像这样更改表单：

  <img src="../images/delete.png" width="20px" height="20px" style="float:left;"><form method="post"><input class="article" type="submit" name="delete" value="Odstrániť článok"><input type="hidden" name="id" value="<?php /*echo id of the article to be removed*/ ?>"></form>

如果您这样做，点击删除按钮后，id也将被发送到服务器。您的删除现在执行没有问题，但您提供给它的id有问题。

删除文章在需要时不起作用

1 个答案: