Question

我整理了一个代码，以使输出显示在与php页面相同的页面上，但它不会显示。做错了什么？我不知道为什么。我确定这是在网络浏览器上运行，看看结果是否会显示，但事实并非如此。

这是源代码：

<!DOCTYPE HTML>
<html>
    <head></head>
    <body>  
    <?php
    // define variables and set to empty values
    $name = $email = $gender = $comment = $website = "";

    if ($_SERVER["REQUEST_METHOD"] == "POST") {
        $name = test_input($_POST ["name"]);
        $email = test_input($_POST ["email"]);
        $website = test_input($_POST ["website"]);
        $comment = test_input($_POST ["comment"]);
        $gender = test_input($_POST ["gender"]);
    }
    function test_input($data) {
        $data = trim($data);
        $data = stripslashes($data);
        $data = htmlspecialchars($data);

        return $data;
    }
    ?>

    <h2>PHP Form Validation Example</h2>
    <form method="post" action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?>">
        Name: <input type="text" name="name"> <br>
        <br> E-mail: <input type="text" name="email"> <br>
        <br> Website: <input type="text" name="website"> <br>
        <br> Comment:
        <textarea name="comment" rows="5" cols="40"></textarea>
        <br>
        <br> Gender: <input type="radio" name="gender" value="female">Female <input
            type="radio" name="gender" value="male">Male <br>
        <br> <input type="submit" name="submit" value="Submit">
    </form>

    <?php
    echo "<h2>Your Input:</h2>";
    echo $name;
    echo "<br>";
    echo $email;
    echo "<br>";
    echo $website;
    echo "<br>";
    echo $comment;
    echo "<br>";
    echo $gender;
    ?>
    </body>
</html>

PHP页面不会使用$ _SERVER ==“POST”方法从php页面生成输出

0 个答案: