多个单选按钮数组PHP表单 [英] Multiple radio button array for php form

问题描述

我是新来这个。我正在学习网络开发和必须创建一个PHP的响应形式的问卷，然后输入到数据库中。我在与单选按钮的麻烦。我无法创建正确的code，使一个数组，并显示在响应形式/页的答案。

I'm new to this. I'm studying web development and have to create a php response form for a questionnaire which then inputs into a database. I'm having trouble with the radio buttons. I can't create the right code that makes an array and displays the answers in the response form/page.

这是我的code：

<form name="modulequestionnaire" method="post" action="tania.responseform.php" />

<p><i>Rate each question from 6 to 1, six being strongly 
agree and one being strongly disagree.</i></p>

1. I think the module guide/student handbook provided enough information about the 
module content, organisation and assessment.<br/>

6<input type="radio" name="answer[1]" value="6"> 5<input type="radio" name="answer[1]" value="5"> 
4<input type="radio" name="answer[1]" value="4"> 3<input type="radio" name="answer[1]" value="3"> 
2<input type="radio" name="answer[1]" value="2"> 1<input type="radio" name="answer[1]" value="1">
</p>

2.The module was well organised.<br/>

6<input type="radio" name="answer[2]" value="6"> 5<input type="radio" name="answer[2]" value="5"> 
4<input type="radio" name="answer[2]" value="4"> 3<input type="radio" name="answer[2]" value="3"> 
2<input type="radio" name="answer[2]" value="2"> 1<input type="radio" name="answer[2]" value="1"> 
</p>

3.The Learning Resource Centre provided adequate materials for the module.<br/>

6<input type="radio" name="answer[3]" value="6"> 5<input type="radio" name="answer[3]" value="5"> 
4<input type="radio" name="answer[3]" value="4"> 3<input type="radio" name="answer[3]" value="3"> 
2<input type="radio" name="answer[3]" value="2"> 1<input type="radio" name="answer[3]" value="1"> 
</p>

我知道答案可能涉及到使用isset功能，但我不知道如何code吧。
可能有人可能教或帮助我在这里？

I know the answer can relate to the isset function but I don't know how to code it. Could someone possibly teach or help me out here?

推荐答案

当你不确定如何处理，你已经设置了，你应该的var_dump（$ _ POST）的HTML标记这让你知道的格式将是什么样子发送到PHP页面处理的值，这样你可以从那里继续。

When you're unsure of how to handle the HTML markup that you've set up, you should var_dump($_POST) the values that are sent to the PHP handler page so you know what the format will look like, that way you can proceed from there.

当我创建你的HTML，并测试了一个的var_dump 和一些随机选择，产量为

When I created your HTML and tested it with a var_dump and some random selections, the output was

array(2) { ["answer"]=> array(3) { [1]=> string(1) "5" [2]=> string(1) "3" [3]=> string(1) "4" } ["submit"]=> string(6) "Submit" }

注意，还有就是 $ _ POST ['答案'] 变量中的数组。所以，你应该的foreach 在数组来处理每个相应值中的每个元素：

Notice that there is an array within the $_POST['answer'] variable. So you should foreach over each element in that array to handle each respective value:

foreach ($_POST['answer'] as $answer) {
    // do stuff with the answer
}

如果你需要与你的 POST 阵列，可以的foreach 在定义的答复号工作一个关键的：

If you need to work with the answer number that you defined in the POST array, you can foreach with a key:

foreach ($_POST['answer'] as $answerNum => $answer) {
    // do stuff with $answerNum and $answer
}

可以，当然，其数量直接访问你的答案：

You can, of course, access your answer by its number directly:

if (!empty($_POST['answer'][1])) { // To ensure that the value is being sent
    // do stuff with $_POST['answer'][1]
}

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