我建议您使用wp_schedule_event() 并创建一个每日触发的自定义挂钩。然后，这个钩子可以调用一个自定义函数，在该函数中，您可以查询具有所需发布日期的帖子，并更改其状态。

例如，创建一个新插件并添加（注意：我还没有对此进行测试）：

// Schedule auto-drafting post event on plugin activation.
register_activation_hook( __FILE__, \'schedule_auto_draft_posts\' );
add_action( \'auto_draft_posts\', \'draft_posts\' );
function schedule_auto_draft_posts() {
    wp_schedule_event( time(), \'daily\', \'auto_draft_posts\' );
}

// Draft published posts based on the post\'s publish date.
function draft_posts() {

    $old_status = \'publish\';
    $new_status = \'draft\';

    // Example: get published posts made before last week.
    $posts = get_posts(
        array(
            \'date_query\' => array(
                array(
                    \'column\' => \'post_date_gmt\',
                    \'before\' => \'1 week ago\',
                ),
            ),
            \'fields\' => \'all\',
            \'numberposts\' => -1,
            \'post_status\' => $old_status,
        )
    );

    foreach ($posts as $post) {

        // Update the post status.
        wp_update_post(
            \'ID\' => $post->ID,
            \'status\' => $new_status,
        );

        // Fire actions related to the transitioning of the post\'s status.
        wp_transition_post_status( $new_status, $old_status, $post );
    }
}

// Clean the scheduler on plugin deactivation.
register_deactivation_hook( __FILE__, \'unschedule_auto_draft_posts\' );
function unschedule_auto_draft_posts() {
    wp_clear_scheduled_hook( \'auto_draft_posts\' );
}

• Understanding WP-Cron SchedulingPHP\'s relative date formats.
  • register_activation_hook()
  • add_action()
  • wp_schedule_event()
  • get_posts()
  • wp_update_post()
  • wp_transition_post_status()
  • register_deactivation_hook()
  • wp_clear_scheduled_hook()