如何在HTML表单内创建一组项目的数组 [英] How to create an array of a group of items inside an HTML form

问题描述

我正在尝试按照以下方式创建表单(我知道这不是有效的HTML，但是希望可以说明执行此操作的原因和原因):

I'm trying to create a form along the lines of the following (I am aware that this is not valid HTML, but it hopefully illustrates what and why I am trying to do this):

<form method="post" action="test.php">
    <input type="text" name="teamName">
    <br />Players:
    <grouping name="players[]">
        <input type="text" name="firstName"><br />
        <input type="text" name="lastName"><br />
    </grouping>
    <input type="submit" value="submit">
</form>

通过javascript，然后我将根据需要多次添加分组元素.提交表单后，我可以按以下方式访问分组元素中的项目:

Through javascript, I would then add the grouping element as many times as needed. When the form is submitted, I could then access the items in the grouping element as follows:

foreach ($players as $player) {
    $fName = $player->firstName;
    $lName = $player->lastName;
}

也就是说，在我开始之前，我不知道团队中会有多少名球员，但是我知道一名球员的样子.我希望将所有内容都保留在一个屏幕上，以便用户可以在一页上将球员添加到他们的团队中，并且我希望能够将字段分组添加为一个组.但是，我也希望将分组存储为数组，而不是像这样:

That is, before I start, I don't know how many players will be on the team, but I know what a player looks like. I want to keep this all on one screen, so that the user can add players to their team on one page, and I want to be able to add the grouping of fields as a group. However, I would also like that grouping to be stored as an array, instead of doing something like:

<form method="post" action="test.php">
    <input type="text" name="teamName">
    <br />Players:
    <input type="text" name="firstName[]"><br />
    <input type="text" name="lastName[]"><br />
    <input type="submit" value="submit">
</form>

这意味着我可以遍历分组中的各个元素，但不能遍历整个分组.

which would mean that I could iterate through the individual elements in the grouping, but not through the grouping as a whole.

有什么想法可以实现这一目标吗?

Any ideas how I might accomplish this?

推荐答案

不过，看看您的结构，我建议您使用更健壮的数组结构:

Looking at your structure, though, I'd recommend going for a more robust array structure:

foreach ($players as $i => $player) {
    $fName = $player->firstName;
    $lName = $player->lastName;

    echo '<input type="text" name="players['.$i.'][firstName]" value="'.$fName.'" />';
    echo '<input type="text" name="players['.$i.'][lastName]" value="'.$lName .'" />';

}

提交时，您将获得:

players => Array(
  [0] => Array (
    firstName => a name,
    lastName => another name,
  ),
  [1] => Array (
    firstName => a name,
    lastName => another name,
  ),
etc...
)

或者，您可以在最后一个输入字段中增加$ i ++，而不是在foreach语句中生成$ i，但是出于调试目的，通常很高兴知道从原始数组中使用哪个索引.

Alternatively, rather than generating $i in the foreach statement, you could do an incrementing $i++ in the last input field, but I find for debugging purposes it's often nice to know which index your using from the original array.

我建议在您的问题示例中使用此方法，因为它还允许您通过$ _POST ['players']

I recommend this approach over your question's example, as it also allows you to do a count/iterate through $_POST['players']

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