while 循环中的 foreach 循环 [英] A foreach loop in a while loop

问题描述

我正在尝试将 wordpress 标签(和其他输入)转换为 html 类.首先我查询帖子，将它们设置在一个 while 循环中，在这个 while 循环中我将标签转换为有用的类.我现在有这个:

I'm trying to convert wordpress tags (and other input) to html classes. First I query the posts, set them in a while loop and in this while loop I convert the tags to usefull classes. I've got this right now:

 <?php while ($query->have_posts()) : $query->the_post(); 


    $posttags = get_the_tags();
    if ($posttags) {
      foreach($posttags as $tag) {
        $thetags =  $tag->name . ''; 
        echo $the_tags;

        $thetags = strtolower($thetags);


        $thetags = str_replace(' ','-',$thetags);
        echo $thetags;


      }
   }
    ?>

    <!-- Loop posts -->         
    <li class="item <?php echo $thetags ?>" id="<?php the_ID(); ?>" data-permalink="<?php the_permalink(); ?>">

<?php endwhile; ?>

现在有什么问题:

第一个回显，回显如下标签:Tag 1 Tag 2.第二个回显像 tag-1tag-2，这也不是我想要的，因为每个标签之间没有空格.因此只有最后一个标签显示在 html 类中，因为它不在 foreach 循环中.

The first echo, echoes the tags like: Tag 1 Tag 2. The second echoes it like tag-1tag-2, what is not what I want either because there are no spaces between every tag. Thereby is only the last tag shown in the html class, because it's not in the foreach loop.

我想要什么:我想在 html 类中包含所有相关标签.所以最终结果一定是这样的:

What do I want: I want to have all related tags in the html class. So the end result must be like:

<li class="item tag-1 tag-2 tag-4" id="32" data-permalink="thelink">

但是，如果我将列表项放在 foreach 循环中，我会为每个标签获得一个

项.如何正确地做到这一点?谢谢！

However if I would put the list item in the foreach loop, I would get a <li> item for every tag. How to do this properly? Thanks!

推荐答案

我会做这样的事情(使用数组而不是那个，然后使用内爆得到它之间有空格:)

i Would do something like this (use a array instead of that and then use implode to get it with spaces between it :)

<?php while ($query->have_posts()) : $query->the_post(); 

$tags = array(); // a array for the tags :)
$posttags = get_the_tags();
if (!empty($posttags)) {
  foreach($posttags as $tag) {
    $thetags =  $tag->name . ''; 
    echo $the_tags;

    $thetags = strtolower($thetags);


    $thetags = str_replace(' ','-',$thetags);
    $tags[] = $thetags;

    echo $thetags;


  }
}
?>

<!-- Loop posts -->      
<li class="item <?= implode(" ", $tags) ?>" id="<?php the_ID(); ?>" data-permalink="<?php the_permalink(); ?>">

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