我正在尝试设置一个cron作业，该作业可以删除过期的帖子（即过期日期<；今天的日期）。我在自定义帖子类型上有一个元框，可以为帖子添加到期日期。

我已设置cron作业，以每小时触发wp\\u delete\\u post。但是，它并不是只删除过期的帖子，而是删除自定义帖子类型中的所有帖子。

有人知道问题出在哪里吗？谢谢

add_action( \'wp\', \'delete_expired_adverts_daily\' );
function delete_expired_adverts_daily() {
    if ( ! wp_next_scheduled( \'delete_expired_adverts\' ) ) {
        wp_schedule_event( time(), \'hourly\', \'delete_expired_adverts\');
    }
}
add_action( \'delete_expired_adverts\', \'delete_expired_adverts_callback\' );

function delete_expired_adverts_callback() {
    $args = array(
        \'post_type\' => \'advert\',
        \'posts_per_page\' => -1
    );

    $query_ads = new WP_Query($args);
    if ($query_ads->have_posts()):
        while($query_ads->have_posts()): $query_ads->the_post();    

            $expiry_date = get_post_meta( $post_id, \'expires\', true);
            $today = date(\'d-m-Y\');

            $today_split = strtotime($today);
            $expiry_split = strtotime($expiry_date);

            if ($expiry_split < $today_split) {
                wp_delete_post(get_the_ID());
                //Use wp_delete_post(get_the_ID(),true) to delete the post from the trash too.                  
            }

        endwhile;
    endif;
}