说到 WordPress 的特色图像功能，相信大家都比较熟悉了，今天分享 批量删除所有文章的特色图像 的方法，或许有些朋友会用得上。将下面的代码添加到当前主题的 functions.php ：
/**
* WordPress 批量删除所有文章的特色图像
* https://www.wpdaxue.com/bulk-remove-featured-images-from-posts.html
*/
global $wpdb;
$attachments = $wpdb->get_results( "
SELECT *
FROM $wpdb->postmeta
WHERE meta_key = '_thumbnail_id'
" );
foreach ( $attachments as $attachment ) {
wp_delete_attachment( $attachment->meta_value, true );
}
$wpdb->query( "
DELETE FROM $wpdb->postmeta
WHERE meta_key = '_thumbnail_id'
" ); |
/**
* WordPress 批量删除所有文章的特色图像
* https://www.wpdaxue.com/bulk-remove-featured-images-from-posts.html
*/
global $wpdb;
$attachments = $wpdb->get_results( "
SELECT *
FROM $wpdb->postmeta
WHERE meta_key = '_thumbnail_id'
" );
foreach ( $attachments as $attachment ) {
wp_delete_attachment( $attachment->meta_value, true );
}
$wpdb->query( "
DELETE FROM $wpdb->postmeta
WHERE meta_key = '_thumbnail_id'
" );
一旦你保存了 functions.php ，所有文章的特色图像都会被删除（只删除文章的特色图像设置数据，图片仍旧会保留在你的媒体库，不会删除），执行了一次以后，你应该删除这段代码，否则你将不可能给文章再添加特色图像（它会继续自动删除）。
参考资料：http://www.wpbeginner.com/wp-tutorials/how-to-bulk-remove-featured-images-from-posts-in-wordpress/
来源：
https://www.wpdaxue.com/bulk-remove-featured-images-from-posts.html
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