### Function: Display timespan most Viewed Page/Post
function get_timespan_most_viewed($mode = '', $limit = 10, $chars = 0,$days = 30/*设置天数*/, $display = true) {
    global $wpdb;
    $limit_date = current_time('timestamp') - ($days*86400);
    $limit_date = date("Y-m-d H:i:s",$limit_date);
    $views_options = get_option('views_options');
    $where = '';
    $temp = '';
    $output = '';
    if(!empty($mode) && $mode != 'both') {
        $where = "post_type = '$mode'";
    } else {
        $where = '1=1';
    }
    $most_viewed = $wpdb->get_results("SELECT DISTINCT $wpdb->posts.*, (meta_value+0) AS views FROM $wpdb->posts LEFT JOIN $wpdb->postmeta ON $wpdb->postmeta.post_id = $wpdb->posts.ID WHERE post_date < '".current_time('mysql')."' AND post_date > '".$limit_date."' AND $where AND post_status = 'publish' AND meta_key = 'views' AND post_password = '' ORDER BY views DESC LIMIT $limit");
    if($most_viewed) {
        foreach ($most_viewed as $post) {
            $post_views = intval($post->views);
            $post_title = get_the_title($post);
            if($chars > 0) {
                $post_title = snippet_text($post_title, $chars);
            }
            $post_excerpt = views_post_excerpt($post->post_excerpt, $post->post_content, $post->post_password, $chars);
            $temp = stripslashes($views_options['most_viewed_template']);
            $temp = str_replace("%VIEW_COUNT%", number_format_i18n($post_views), $temp);
            $temp = str_replace("%POST_TITLE%", $post_title, $temp);
            $temp = str_replace("%POST_EXCERPT%", $post_excerpt, $temp);
            $temp = str_replace("%POST_CONTENT%", $post->post_content, $temp);
            $temp = str_replace("%POST_URL%", get_permalink($post), $temp);
            $output .= $temp;
        } 
    } else {
        $output = '<li>'.__('N/A', 'wp-postviews').'</li>'."\n";
    }
    if($display) {
        echo $output;
    } else {
        return $output;
    }
}

<?php get_timespan_most_viewed('post',14);?>