我不喜欢WordPress处理库短代码的方式。

这是我用来在图库中获取图像的一些稍加修改的代码。在本例中，附件（以及它们的ID）只有在处理完gallery短代码后才可用。

如果您希望显示不同于默认库的HTML，我会使用post_gallery 过滤以短路内置WordPress快捷码并显示您自己的快捷码。

namespace StackExchange\\WordPress;

class Q291678 {
   protected $attachements = [];
   public function getAttachments() : array {
     return $this->attachments;
   }
   public function wp_loaded() {
     \\add_filter( \'shortcode_atts_gallery\', [ $this, \'shortcode_atts_gallery\' ], 10, 4 );
   }
   public function shortcode_atts_gallery( array $out, array $pairs, array $atts, string $shortcode ) : array {
     $this->attachements = $this->getPostAttachments( $out );
     return $out;
   }
   protected function getPostAttachments( array $atts ) : array {
     //* Code copied from WP Core to get post attachements
     $id = intval( $atts[ \'id\' ] );
     if ( ! empty( $atts[ \'include\' ] ) ) {
         $_attachments = \\get_posts( [
           \'include\'        => $atts[ \'include\' ],
           \'post_status\'    => \'inherit\',
           \'post_type\'      => \'attachment\',
           \'post_mime_type\' => \'image\',
           \'order\'          => $atts[ \'order\' ],
           \'orderby\'        => $atts[ \'orderby\' ]
         ] );

         $attachments = [];
         foreach ( $_attachments as $key => $val ) {
             $attachments[ $val->ID ] = $_attachments[ $key ];
         }
     } elseif ( ! empty( $atts[\'exclude\'] ) ) {
         $attachments = \\get_children( [
           \'post_parent\'    => $id,
           \'exclude\'        => $atts[ \'exclude\' ],
           \'post_status\'    => \'inherit\',
           \'post_type\'      => \'attachment\',
           \'post_mime_type\' => \'image\',
           \'order\'          => $atts[ \'order\' ],
           \'orderby\'        => $atts[ \'orderby\' ]
         ] );
     } else {
         $attachments = \\get_children( array( 
           \'post_parent\'    => $id, 
           \'post_status\'    => \'inherit\',
           \'post_type\'      => \'attachment\',
           \'post_mime_type\' => \'image\',
           \'order\'          => $atts[ \'order\' ],
           \'orderby\'        => $atts[ \'orderby\' ] ) );
     }
     //* End code from core
     return $attachments;
   }
}
\\add_action( \'wp_loaded\', [ new Q291678, \'wp_loaded\' ] );