我想将我的自定义帖子类型分为几年。

我应该看起来像

2019年职位1职位2职位3

2018年职位1职位2

2015年第1期

年鉴1。。n

以下示例：Order and group posts by acf by month and year 我的代码是这样设置的。

<?php get_header(); ?>
<?php /* Template Name: Konzerte */ 
// Überschrift-Element mit Headline, Bild, Schwung und Text; 800px hoch
require(\'inc/stage.php\'); ?>
<?php 
// get posts
$posts = get_posts(array(
\'post_type\'         => array(\'concertreport\', \'concertannouncement\'),
\'posts_per_page\'    => -1,
\'meta_key\'          => \'concertdate\',
\'orderby\'           => \'meta_value\',
\'order\'             => \'DESC\'
)); 
?>


<?php
    $group_posts = array();

        if( $posts ) {
            foreach( $posts as $post ) {
                $date = get_field(\'concertdate\', $post->ID, false);
                $date = new DateTime($date);
                $year = $date->format(\'Y\');
                $group_posts[$year][] = array($post, $date);
            }

        }
        foreach ($group_posts as $yearKey => $years) { ?>

    <h2><?php echo $yearKey; ?></h2>
    <?php foreach ($years as $postKey => $posts) { ?>
      <?php echo $posts[1]->format(\'d-m-Y\');
          echo \' / \';
          echo $posts[0]->post_title;
          echo \'<br>\';
          // Instead of "echo $posts[0]->post_title;" I want to display the ACF-(Sub-)fields like teaser-text, image, etc. 

        } 
    }
?>

<?php get_footer(); ?>

结果非常好：

正如您在我的评论中所看到的，我想在那里显示ACF字段。自定义图像、自定义摘要文本等。我不知道为什么，如果我从ACF那里复制代码，例如标题而不是注释：

<div class="col-md-7 bg-wso-white">
  <?php the_title( \'<h3 class="font-weight-bold text-left text-wso-black text-uppercase pb-1"><a href="\' . get_permalink() . \'" title="\' . the_title_attribute( \'echo=0\' ) . \'" rel="bookmark">\', \'</a></h3>\' ); ?>
</div>

结果，不太好；-）：

它只会重复显示所有帖子最早日期的文本。我的acf子字段根本不显示。有人能帮我吗？

<?php /* Template Name: Konzerte */
// Überschrift-Element mit Headline, Bild, Schwung und Text; 800px hoch
require(\'inc/stage.php\');

    global $post;

    // get posts
  $posts = get_posts(array(
      \'post_type\'         => array(\'concertreport\', \'concertannouncement\'),
      \'posts_per_page\'    => -1,
      \'meta_key\'          => \'concertdate\',
      \'orderby\'           => \'meta_value\',
      \'order\'             => \'DESC\'
  ));

  $group_posts = array();

    if ($posts) {
      $previous_year = \'\';
      foreach ($posts as $post) {
        $date = get_field(\'concertdate\', $post->ID, false);
        $date = new DateTime($date);
        $current_year = $date->format(\'Y\');

        // If $previous_year is empty, display $current_year
        if ($previous_year == \'\') {
            echo \'<h2>\' . $current_year . \'</h2>\';
        }
        // Else if $previous_year is not equal to $current_year, display $current_year
        else if ($previous_year !== $current_year) {
            echo \'<h2>\' . $current_year . \'</h2>\';
        }

        $previous_year = $date->format(\'Y\');
        echo $date->format(\'d-m-Y\');
        echo \' / \';
        echo get_the_title();
        echo \'<br>\';
      }
    }
?>

<?php get_footer(); ?>