更有效地访问多暗阵列

I'm trying to nicely output a data array (with Kohana v2.3.4), and am thinking there has to be a more efficient and elegant way to do this. My array looks like this:

我正在尝试很好地输出一个数据数组（使用Kohana v2.3.4），并且我认为必须有一个更有效和更优雅的方法来做到这一点。我的数组看起来像这样：

array('category_id' => value, 'category_title' => value, 'posts' => array( 'id' => value, 'title' => value, ... ))

And here's how I'm outputting it in my view (some array values are omitted from this example for the sake of simplicity):

以下是我在视图中输出的方法（为简单起见，本示例中省略了一些数组值）：

foreach($data as $d) {
    echo '<h3>'.$d['category_title'].'</h3>';
    foreach($d['posts'][0] as $p) {
        echo '<p>'.$p['title'].$p['id'].'</p>';
    }
}

Is there a better way to go about this with the array I have?

有没有更好的方法来解决这个问题？

2 个解决方案

#1

You can't escape from using nested loop (unless if you use array_walk etc) but you can make do without using lots of string concatenation by taking advantage of variable substitution:

你不能逃避使用嵌套循环（除非你使用array_walk等），但你可以通过利用变量替换而不使用大量的字符串连接来完成：

foreach($data as $d) {
    echo "<h3>{$d['category_title']}</h3>";
    foreach($d_posts[0] as $p) {
        echo "<p>{$p['title']} {$p['id']}</p>";
    }
}

You can also combine it with extract() for cleaner strings:

您还可以将它与extract（）组合以获得更清晰的字符串：

foreach($data as $d) {
    extract($d, EXTR_PREFIX_ALL, 'd_');
    echo "<h3>$d_category_title</h3>";
    foreach($d_posts[0] as $p) {
        extract($p, EXTR_PREFIX_ALL, 'p_');
        echo "<p>$p_title $p_id</p>";
    }
}

#2

Apart from a minor error:

除了一个小错误：

foreach ($data as $d) {
  echo '<h3>'.$d['category_title'].'</h3>';
  foreach($d['posts'] as $p) {
    echo '<p>'.$p['title'].$p['id'].'</p>';
  }
}

no there isn't.

没有。

What's your issue with a nested loop for this?

对于这个嵌套循环，你有什么问题？

#1