你已经拥有了全部帖子，所以为了在上周内获得全部帖子，最好在你的functions.php 文件：

function get_posts_count_from_last_week($post_type =\'post\') {
    global $wpdb;

    $numposts = $wpdb->get_var(
        $wpdb->prepare(
            "SELECT COUNT(ID) ".
            "FROM {$wpdb->posts} ".
            "WHERE ".
                "post_status=\'publish\' ".
                "AND post_type= %s ".
                "AND post_date> %s",
            $post_type, date(\'Y-m-d H:i:s\', strtotime(\'-168 hours\'))
        )
    );
    return $numposts;
}

<?php echo get_posts_count_from_last_week(); ?>

$args = array(
  \'cat\' => 4,
  \'post_type\' => \'videos\'
);
$the_query = new WP_Query( $args );
echo $the_query->found_posts;