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如果当前文章中的附件图像数超过“x”,如何仅显示文章中的“x”图像(在分类页面上)?

attachment image

GalgÃ³czi Levente · 技术社区 · 7 年前

所以我有这个密码:

   $attachments = get_children(
       array(
    'post_type' => 'attachment',
    'post_mime_type' => 'image',
    'post_parent' => $post->ID
       ));
   if(count($attachments) > 3) { ?>
       <!-- Code need to here, what shows only the first 3 images -->
   <?php } else {
       the_content();
         } ?>

我正在网上寻找解决办法,但暂时什么也找不到。如果你能帮我,请写信。

1 回复 | 直到 7 年前

GalgÃ³czi Levente 7 年前

这是在基于子域的多站点上工作的,其中包含重新记录(广播或任何)的子帖子,这些子帖子没有原始内容(因为它从其父站点获取)。

添加到function.php:

  // ADD IMAGES TO the_expert
  function improved_trim_excerpt($text) {
     global $post;
     if ( '' == $text ) {
             $text = get_the_content('');
             $text = apply_filters('the_content', $text);
             $text = strip_tags($text, '<a><img>');

            $delim = '</a>'; // I think you also want add links to your images
            $start = 0; // starter image
            $items = 3; // number of images
            $the_excerpt = implode($delim, array_slice(explode($delim, $text), $start,$items)) . $delim; // $delim closes your excerpt
     }
     return $the_excerpt;
  }
  remove_filter('get_the_excerpt', 'wp_trim_excerpt');
  add_filter('get_the_excerpt', 'improved_trim_excerpt');

内容页的部分:

  global $post;
  $postid = ($id == $post->ID) ? $post->ID : $id;
  $content = $post->post_content;
  // match all urls
  preg_match_all( '/(http:|https:)?\/\/([\w_-]+(?:(?:\.[\w_-]+)+))([\w.,@?^=%&:\/~+#-]*[\w@?^=%&\/~+#-])?/', $content, $matches );
  $count = 0;
  if ( ! empty( $matches ) && ! empty( $matches[ 0 ] ) ) {
      foreach ( $matches[ 0 ] as $url ) {
          $split    = explode( '#', $url );
          $split    = explode( '?', $split[ 0 ] );
          $split    = explode( '&', $split[ 0 ] );
          $filename = basename( $split[ 0 ] );
          $file_type = wp_check_filetype( $filename, wp_get_mime_types() );
          if ( ! empty ( $file_type[ 'ext' ] ) ) {
              // (optional) limit inclusion based on file type
              if( ! in_array( $file_type[ 'ext' ], array('jpg', 'png', 'gif', 'webp', 'bmp')) ) continue;
              $files[ $url ] = $file_type;
              $urls[]=$url;
              $count ++;
          }
      }
  }
  $no_of_photos = $count / 2; // Gets the number of photo's attached in $no_of_photos variable -> you need use / 2, if your image's links shows to the file, because in this case, in every <img> have two 'ext'.
  $limit_photos = 3; // set your limit

              if( $no_of_photos <= $limit_photos ) {
              the_content(); ?>
              } else {
              the_excerpt(); ?>
              }