wp_trash_post 和trashed_post - 来源：

function wp_trash_post($post_id = 0) {
    if ( !EMPTY_TRASH_DAYS )
        return wp_delete_post($post_id, true);

    if ( !$post = wp_get_single_post($post_id, ARRAY_A) )
        return $post;

    if ( $post[\'post_status\'] == \'trash\' )
        return false;

    do_action(\'wp_trash_post\', $post_id);

    add_post_meta($post_id,\'_wp_trash_meta_status\', $post[\'post_status\']);
    add_post_meta($post_id,\'_wp_trash_meta_time\', time());

    $post[\'post_status\'] = \'trash\';
    wp_insert_post($post);

    wp_trash_post_comments($post_id);

    do_action(\'trashed_post\', $post_id);

    return $post;
}