Question

我刚开始学习PHP，但是我的代码出现错误。我目前正在看一个教程，我写的完全一样，但是没有用。谢谢。

我的错误： 注意：未定义的索引：第14行的C：\ xampp \ htdocs \ victor \ switchStatement \ index.php中的等级

这是我的代码：

<html>
    <head>
        <title></title>
    </head>

    <body>
        <form action="index.php" method="post">
            What was your grade?
            <input type="text" name="grade">
            <input type="submit">
        </form>
            <?php
                $grade = $_POST["grade"];
                switch($grade)
                {
                    case "A":
                        echo "Wow that was really cool!";
                    break;

                    case "B":
                        echo "Wow that was... pretty cool.";
                    break;  

                    case "C":
                        echo "Wow that wasn't that cool.";
                    break;

                    case "F" || "D":
                        echo "Wow that was really bad!";
                    break;
                }
            ?>
    </body>
</html>

未定义索引，即使它是

0 个答案: