Question

下午好！所以，我在这里遇到了PHP代码的一些问题。我不确定为什么，但按下提交按钮后，没有信息发送到$ _POST。任何推理为什么会这样？

发送到html文档的数据被写入php多维关联数组。

我的代码发布在下面。

<html>
<?php
$pageId = "Quiz";
$questions = array(
    array('question' => 'How do you install Apache2 on Debian?',
        'answer' => 'sudo apt-get install apache2',
        'choices' => array('1' => 'apt-get update', '2' => 'sudo apt-get install apache2', '3' => "sudo apt-get install apache", '4' => 'apt-get install apache2',),
    ),
    array('question' => 'What command enables ufw?',
        'answer' => 'sudo ufw enable',
        'choices' => array('1' => 'sudo ufw allow', '2' => 'sudo ufw enable 80', '3' => 'ufw allow', '4' => 'sudo ufw enable',),
    ),
    array('question' => 'What ports do you keep open to ensure your web content can be driven?',
        'answer' => '80 and 443',
        'choices' => array('1' => '80 and 443', '2' => '88 and 441','3' => "80 and 4443", '4' => '90 and 433',),
    ),
    array('question' => 'What OS was this tutorial tailored for?',
        'answer' => 'Debian',
        'choices' => array('1' => 'Debian', '2' => 'Ubuntu','3' => 'CentOS', '4' => 'FreeBSD',),
    ),
    array('question' => 'What are some of the benefits to setting up your own web server?',
        'answer' => 'choice 1 data',
        'choices' => array('1' => 'choice 1 data', '2' => 'choice 2 data',),
    ),
);
include 'includes/header.html.php';
echo '<pre>';
print_r($_POST);
echo '</pre>';
?>

<div class="container" id="theBestStuff">
    <main>
        <form>
            <ol>
<?php foreach ($questions as $q => $question) : ?>
                <li><?= $question['question']?></li>
<?php foreach ($question['choices'] as $c => $choice) : ?>
                <label><input type="radio" name="question<?= $q ?>" value="<?= $choice ?>"><?= $choice ?></label>
<?php endforeach; ?>
<?php endforeach; ?>
            </ol>
            <input class="btn btn-info" action="" method="post" type="submit" value="submit">
        </form>
    </main>
</div>

<?php
include 'includes/footer.html.php';
?>
</html>

Answer 1

这是因为您的<form>代码中没有任何属性。它应该是：

 <form action="php_script_to_process_the_form.php" method="POST">

     ... Form elements ...

     <input class="btn btn-info" type="submit" value="submit">

 </form>

请参阅W3Schools上的标记，获取可能需要的所有可用属性的列表：https://www.w3schools.com/tags/tag_form.asp

method =＆＃34; GET＆＃34; 是方法属性的默认值，它将表单数据附加到名称/值对中的URL：URL？name = value＆amp; ;名称=值

然而，

方法=＆＃34; POST＆＃34; 将表单数据作为HTTP事务处理发送

和

action =＆＃34; url＆＃34; 指定提交表单时发送表单数据的位置。网址可能是绝对的： action =＆＃34; http：//www.example.com/example.php" 或亲戚： action =＆＃34; example.php＆＃34;

Answer 2

表单use the GET method by default。您必须在method="post"标记上明确设置<form>，以便浏览器将请求提交为POST并填充$_POST超全局。 method标记上的<input>属性没有意义，因为有关向服务器发送数据的详细信息是在整个范围内应用的。

为什么我的$ _POST回来了一个空数组？

2 个答案: