我想从帖子中检索所有图像附件，并将其渲染到图库中。有些人认为返回的附件数量只有一个，即使帖子包含多个图像附件也很难。奇怪的是，一些被返回的附件甚至没有出现在帖子中。下面是我用来获取附件的函数

function get_attchments($num=1){
  $output = \'\';
  if (has_post_thumbnail() && $num == 1){
      $output = wp_get_attachment_url(get_post_thumbnail_id(get_the_ID()));
    }else {
      $attachments = get_posts(array(
          \'post_type\' => \'attachment\',
          \'posts_per_page\' => $num,
          \'exclude\'     => get_post_thumbnail_id(),
          \'post_parent\' => get_the_ID(),
      ));

  if ($attachments && $num == 1){
          foreach ($attachments as $attachment){
              $output = wp_get_attachment_url($attachment->ID);
            }
  }else if($attachments && $num > 1){       
          $output = $attachments;
  }
  wp_reset_postdata();
}
 return $output;
}

我调用函数如下

while(have_posts()){
                    the_post();
                    $def_class=\'twigs\';
                    set_query_var(\'lighter_def_post_class\', \'twigs\');
                    get_template_part(\'template-parts/content\', get_post_format() );
                  }

这是contenet gallery的代码。php

$attachments = get_attchments(7);          
    foreach( $attachments as $attachment ){
        //I am rendering the images out here
    }

我早就有这个问题了。非常感谢。

global $wpdb;
$table_name = \'posts\'; // change this to your post-table name, it may be something different.
$values = $wpdb->get_results( "SELECT * FROM $table_name where post_type = attachment");
foreach ($values as $value){
  print_r($value);
}