PHP:更新行时遇到问题

Question

我在更新数据库行时遇到问题。插入没问题，但是当我尝试编辑行时，会发生一些奇怪的事情:

我点击另一个页面中的编辑按钮，然后用户被定向到 addnew.php 页面，所有输入都填充了我们要编辑的行的数据。当我单击“更新”按钮时，出现此错误。

这是我的 addnew.php 代码:

<?php
  session_start();
  if (!isset($_SESSION['loggedin']) || $_SESSION['loggedin'] == false) {
    header('location: login');
  }
  require_once '../core/init.php';
  require_once '../helpers/helper.php';
  include 'includes/header.php';
  $sqlAdd = "";
  //Edit
  if (isset($_GET['edit'])) {
    $edit_id = (int)$_GET['edit'];
    $sql = "SELECT * FROM words WHERE id = '$edit_id'";
    $getWord = $db->query($sql);
    $word = mysqli_fetch_assoc($getWord);

  }
  //Add
  if (isset($_POST['submit'])) {
    $word = mysqli_real_escape_string($db, sanitize($_POST['word']));
    $phonetic = mysqli_real_escape_string($db, sanitize($_POST['phonetic']));
    $meaning = mysqli_real_escape_string($db, sanitize($_POST['meaning']));
    $engMeaning = mysqli_real_escape_string($db, sanitize($_POST['engMeaning']));
    $example = mysqli_real_escape_string($db, sanitize($_POST['example']));
    $eMeaning = mysqli_real_escape_string($db, sanitize($_POST['eMeaning']));
    if ($word == '' ||
        $phonetic == '' ||
        $meaning == '' ||
        $engMeaning == '' ||
        $example == '' ||
        $eMeaning == ''
        ) {
          echo '<p style="text-align:center;
                          background-color: #E74C3C;
                          margin-top:20px;
                          color:white;
          ">All forms must be filled</p>';
    }else {
      if (isset($_GET['edit'])) {
        $sqlAdd = "UPDATE words SET word = '$word', phonetic = '$phonetic', meaning = '$meaning', engMeaning = '$engMeaning',
         example = '$example', exampleMeaning = '$eMeaning' WHERE id = '$edit_id'";
      }else {
        $sqlAdd = "INSERT INTO words (word,   meaning,   engMeaning,  example,    exampleMeaning,phonetic)
                             VALUES ('$word','$meaning','$engMeaning','$example','$eMeaning',   '$phonetic')";
      }
echo $sqlAdd;
  // $db->query($sqlAdd);
    }
  }
?>

<link rel="stylesheet" href="../styles/admin-style.css">
<title>Add new Words</title>
<div class="container2">

  <?= var_dump($word); ?>
  <form autocomplete="off"  method="post">

    <?= var_dump($word); ?>
    <input type="text" name="word" placeholder="Word" value="<?= ((isset($_GET['edit']))?$word['word']:''); ?>">
    <input type="text" name="phonetic" placeholder="Phonetic" value="<?= ((isset($_GET['edit']))?$word['phonetic']:''); ?>">
    <input type="text" name="meaning" placeholder="meaning" value="<?= ((isset($_GET['edit']))?$word['meaning']:''); ?>">
    <input type="text" name="engMeaning" placeholder="English Meaning" value="<?= ((isset($_GET['edit']))?$word['engMeaning']:''); ?>">
    <textarea type="text" name="example" placeholder="Example" rows="5"><?= ((isset($_GET['edit']))?$word['example']:''); ?></textarea>
    <textarea type="text" name="eMeaning" placeholder="example meaning" rows="5"><?= ((isset($_GET['edit']))?$word['exampleMeaning']:''); ?></textarea>
    <button type="submit" name="submit"><?= ((isset($_GET['edit']))?'Update':'Add'); ?></button>
  </form>
</div>

以及错误(其中之一):

警告:第 55 行 C:\wamp64\www\EnglishProject\admin\addnew.php 中的非法字符串偏移“word”调用堆栈 #TimeMemoryFunctionLocation 10.0002266584{main}( )...\addnew.php:0 a">

var_dump 结果:

array (size=8)
  'id' => string '23' (length=2)
  'word' => string 'a1aaaaaa' (length=8)
  'meaning' => string 'sssaaaa' (length=7)
  'engMeaning' => string 'assssssssa' (length=10)
  'example' => string 'aaaaaaaaaaaaaaas' (length=16)
  'exampleMeaning' => string 'saaaaaaaaaaaa' (length=13)
  'phonetic' => string 'aaasss' (length=6)
  'views' => string '0' (length=1)

Answer 1

您在 HTML 部分中使用了 $word['word']。但您尚未分配变量$word['word']。您只有 $word。

不要使用 $word['example']，而是使用 $example。其他变量也一样。

编辑:

有关您的代码的信息不足。但是您可以在输入标记 ((isset($word['word']))?$word['word']:''); 上尝试这样做。这不是一个好的解决方案。但你必须学会​​调试你的代码。