警告：第 67 行的非法字符串偏移 'testi_name'

Question

<?php
include ("../dataconnection.php");
    
if(isset($_GET['sub']))
{
    if(isset($_POST['name']))
        $name = $_POST['name'];
    if(isset($_POST['content']));
        $content = $_POST['content'];
    $query = "INSERT INTO testimonial (testi_name, testi_content) VALUES ('$name', '$content')";
    $result = mysqli_query($connect, $query);
    ?>
    <script>
    alert("Your review has been submitted!");
    </script>
    <?php
    header("Refresh:0");
}

$getTesti = "SELECT * FROM testimonial ORDER BY testi_name ASC";
$result = mysqli_query($connect, $getTesti) or die(mysqli_error($connect));
$row = mysqli_fetch_assoc($result);

?>

<?php foreach($row as $review):?>
<div class="box">
    <h3><?php htmlspecialchars($review['testi_name'], ENT_QUOTES); ?></h3>
    <?php htmlspecialchars($review['testi_content'], ENT_QUOTES); ?>
</div>
<?php endforeach; ?>

您好，我遇到了问题，其中第二个编码显示非法字符串偏移量 'testi_name'。我尝试阅读其他已解决的问题，但我仍然无法理解。我从 sql 得到 'testi_name'。请告诉我问题是什么，因为我是 php 的初学者。谢谢，非常感谢您的帮助。

它甚至循环了 3 次，尽管我的 sql 中只有 1 行 [1]: https://i.stack.imgur.com/C8hhd.png

Answer 1

$row只是第一行结果，不是所有结果。因此，您要遍历第一行中的列，而不是所有行。

您还应该使用准备好的语句，而不是将变量替换到 SQL。

代码应该是：

<?php
include ("../dataconnection.php");
    
if(isset($_GET['sub']))
{
    $content = $_POST['content'];
    if(!empty($name)&& !empty($rate)&& !empty($content))
    {
        $query = "INSERT INTO testimonial (page_id, testi_name, testi_content, testi_rating) VALUES (?, ?, ?, ?)";
        $stmt = mysqli_prepare($connect, $query);
        mysqli_stmt_bind_param($stmt, "ssss", $page, $name, $content, $rate);
        mysqli_stmt_execute($stmt);
        ?>
        <script>
        alert("Your review has been submitted!");
        </script>
        <?php
        header("Refresh:0");
    }
}

$getTesti = "SELECT * FROM testimonial ORDER BY testi_name ASC";
$result = mysqli_query($connect, $getTesti) or die(mysqli_error($connect));
while ($row = mysqli_fetch_assoc($result)): ?>
    <div class="box">
        <h3><?php htmlspecialchars($row['testi_name'], ENT_QUOTES); ?></h3>
        <?php htmlspecialchars($row['testi_content'], ENT_QUOTES); ?>
    </div>
<?php endforeach; ?>

警告：第 67 行的非法字符串偏移 'testi_name'

Warning: Illegal string offset 'testi_name' on line 67

php

mysql

mysqli