Question

我已阅读以下PHP: "Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset"但是我没有在我的案例中找出问题。

我收到通知：下面是未定义的索引，据我所知，我已经定义了infoID：

注意：未定义的索引：infoID in 第193行的C：\ xampp \ htdocs \ WebDevelopment \ Bathrooms \ functions.php

function info_byidx($sql) {
            include 'connect.php';
    $id = $_GET['infoID'];
    $select = $conn->prepare($sql);
    $select->bind_param('s', $id);
    $select->execute();
    $select->store_result();
    if ($select->num_rows > 0) {
        $meta = $select->result_metadata();
        while ($field = $meta->fetch_field()) {
            $params[] = &$row[$field->name];
        }
        call_user_func_array(array($select, 'bind_result'), $params);
        while ($select->fetch()) {
            if ($row['title'] == "NULL") {
                echo "<h3>".$row['subtitle']."</h3>\n<p>".$row['content']."</p>\n";
            }
            else if ($row['subtitle'] == "NULL") {
                echo "<h2>".$row['title']."</h2>\n<p>".$row['content']."</p>\n";
            }
            else {
            echo "<h2>".$row['title']."</h2>\n<h3>".$row['subtitle']."</h3>\n<p>".$row['content']."</p>\n";
            }

        }
        $select->close();
    }

}

infoID定义为：

http://localhost:1234/WebDevelopment/Bathrooms/info.php?pageID=2?infoID=x - generalID
的值在哪里

Answer 1

http://localhost:1234/WebDevelopment/Bathrooms/info.php?pageID=2?infoID=x

将其修复为

http://localhost:1234/WebDevelopment/Bathrooms/info.php?pageID=2&infoID=x

只有一个？首先，然后使用＆amp;分开下一个key = values。

得到通知未定义的索引

1 个答案: