我使用以下代码来显示大多数已读文章。我认为它需要文章的生命周期，因为它首先显示非常旧的文章。如何重置它-每周？

在我的功能中。php

function setPostViews($postID) {
    $countKey = \'post_views_count\';
    $count = get_post_meta($postID, $countKey, true);
    if($count==\'\'){
        $count = 0;
        delete_post_meta($postID, $countKey);
        add_post_meta($postID, $countKey, \'0\');
    }else{
        $count++;
        update_post_meta($postID, $countKey, $count);
    }
}

<?php
                            query_posts (array (
                            \'posts_per_page\' => 5,
                            \'meta_key\' => \'post_views_count\',
                            \'orderby\' => \'meta_value_num\',
                            \'order\' => \'DESC\',
                            \'ignore_sticky_posts\' => true,
                            ));
                            if (have_posts()) : while (have_posts()) : the_post();
                            ?>
                                <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
                            <?php
                            endwhile; endif;
                            wp_reset_query();
                            ?>