自动将缩略图添加到帖子

我有以下代码。

 $postData = array(
   \'post_category\' => array(get_category_id("website")),
   \'post_content\' => \'My website about cars.\',
   \'post_title\' => \'my little cars\',
   \'post_type\' => \'post\',
   \'post_status\' => \'publish\',
   \'tags_input\' => \'cars, hobbies\'
  );
  $pID = wp_insert_post($postData);
  update_post_meta($pID, "language", "English");
  update_post_meta($pID, "author", "John");

以及如何添加帖子缩略图？下面编写的代码不正确。

 $filename = "http://damianc.pl/th.jpg";
 $wp_filetype = wp_check_filetype(basename($filename), null);
 $wp_upload_dir = wp_upload_dir();
 $attachment = array(
  \'guid\' => $wp_upload_dir[\'baseurl\'] . _wp_relative_upload_path( $filename ), 
  \'post_mime_type\' => $wp_filetype[\'type\'],
  \'post_title\' => preg_replace(\'/\\.[^.]+$/\', \'\', basename($filename)),
  \'post_content\' => \'\',
  \'post_status\' => \'inherit\'
 );
 $attach_id = wp_insert_attachment( $attachment, $filename, $pID );
 require_once(ABSPATH . \'wp-admin/includes/image.php\');
 $attach_data = wp_generate_attachment_metadata( $attach_id, $filename );
 wp_update_attachment_metadata( $attach_id, $attach_data );

图像路径良好。我不知道。

$wp_upload_dir = wp_upload_dir(); $fileurl = "http://damianc.pl/th.jpg"; $filename = $upload_dir[\'path\'] . DIRECTORY_SEPARATOR . basename( $fileurl ); if ( file_put_contents( $filename, file_get_contents( $fileurl ) ) ) { require_once(ABSPATH . \'wp-admin/includes/image.php\'); $wp_filetype = wp_check_filetype(basename($filename), null); $attachment = array( \'post_mime_type\' => $wp_filetype[\'type\'], \'post_title\' => preg_replace(\'/\\.[^.]+$/\', \'\', basename($filename)), \'post_content\' => \'\', \'post_status\' => \'inherit\' ); $attach_id = wp_insert_attachment( $attachment, $filename, $pID ); $attach_data = wp_generate_attachment_metadata( $attach_id, $filename ); wp_update_attachment_metadata( $attach_id, $attach_data ); update_post_meta( $pID, \'_thumbnail_id\', $attach_id ); }

Double thumbnails?

是否可以使用缩略图机制两次？我发现缩略图API非常有用，它允许用户在其中放置自己的图形，以便我可以轻松控制大小和位置。他们所要做的就是记住点击特色图片。我想在我的页面上有两个这样的机制，你知道我该怎么做吗？最好是手工编码。

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Double thumbnails?