Question

我试图在@foreach中使用多个数组。看了之后，我发现这不是@foreach的用途所以我应该在以下场景中使用什么？这是我用来模拟网站的虚假数据，然后再将其交给后端开发人员。我正在使用Laravel并且是PHP的初学者，所以我很怜悯。

阵列

$messageData['conversation_sender'][0][0] = 'Clint Smith';
$messageData['conversation_sender'][0][1] = 'Tom Corwin';
$messageData['conversation_sender'][0][2] = 'John Michaels';
$messageData['conversation_sender'][0][3] = 'Jane Winnipeg';
$messageData['conversation_class'][0][0] = 'owner-comment';
$messageData['conversation_class'][0][1] = 'friend-comment';
$messageData['conversation_class'][0][2] = 'friend-comment';
$messageData['conversation_class'][0][3] = 'friend-comment';
$messageData['conversation_message'][0][0] = 'Hello!';
$messageData['conversation_message'][0][1] = 'Can\t wait to catch up';
$messageData['conversation_message'][0][2] = 'Whoop, whoop';
$messageData['conversation_message'][0][3] = 'Good times!';
$messageData['conversation_time'][0][0] = '2 minutes ago';
$messageData['conversation_time'][0][1] = '4 minutes ago';
$messageData['conversation_time'][0][2] = '8 minutes ago';
$messageData['conversation_time'][0][3] = '18 minutes ago';

我一直在使用的@foreach循环示例，一次一个数组

@foreach($messageData['conversation_sender'][0] as $value)
    <span class="form-tag">{{ $value }} <i class="fa fa-plus"></i></span> 
@endforeach

我是如何使用它的（我知道我在做梦）

@for($messageData['conversation_sender'][0] as $sender, $messageData['conversation_class'][0] as $class, $messageData['conversation_message'][0] as $message, $messageData['conversation_time'][0] as $time)
    <li class="{{ $class }} clearfix">
        <p class="text-left">
          <strong>{{ $sender }}</strong><br>
          {{ $message }}
        </p>
        <span class="message-created text-muted">{{ $time }}</span>
    </li>
@endfor

第一次迭代的打印示例

<li class="owner-comment clearfix">
    <p class="text-left">
      <strong>Clint Smith</strong><br>
      Hello!
    </p>
    <span class="message-created text-muted">2 minutes ago</span>
</li>

Answer 1

将数组重组为应该是的：层次结构。

$messageData[] = array(
   'conversation_sender' => 'Clint Smith',
   'conversation_class' => 'owner-comment',
   'conversation_message' => 'Hello!',
   'conversation_time' => '2 minutes ago'
);
// Repeat for each other message.

现在您拥有了您想要的内容，它适用于您的阵列中可能存在的任意数量的消息：

foreach ($messageData as $message) {
    echo "Sender {$message['conversation_sender']} </br>";
    // etc.
}

Answer 2

对一个阵列使用foreach，并在其他阵列中使用相同的键。

foreach ($messageData['conversation_sender'][0] as $index => $sender) {
    $class = $messageData['conversation_class'][0][$index];
    $time = $messageData['conversation_time'][0][$index];
    $message = $messageData['conversation_time][0][$index];
    // do stuff with those variables
}

然而，更为惯用的方式就像在gview的答案中一样。

Answer 3

您可以使用foreach循环。

    @foreach($messageData['conversation_sender'][0] as $key=>$sender)
{{--*/ $class=$messageData['conversation_class'][0][$key];
    $message = $messageData['conversation_message'][0][$key];
    $time = $messageData['conversation_time'][0][$key]; /*--}}
    //Your code here
@endforeach

或直接使用php

    foreach($messageData['conversation_sender'][0] as $key=>$sender){
    $class=$messageData['conversation_class'][0][$key];
    $message = $messageData['conversation_message'][0][$key];
    $time = $messageData['conversation_time'][0][$key]; 

    //your code here

}

PHP：在循环中使用多个数组

3 个答案: