[WordPress]免插件实现文章浏览阅读次数统计

        在当前主题的functions.php文件里添加以下代码：

/*
    统计文章浏览次数
*/
function yundanran_getPostViews($postID)
{
    $count_key = 'yundanran_post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count=='' || !$count)
    {
        // delete_post_meta($postID, $count_key);
        // add_post_meta($postID, $count_key, '0');
        return "0";
    }
    return $count;
}
function yundanran_setPostViews($postID)
{
    $count_key = 'yundanran_post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count=='' || !$count)
    {
        $count = 1;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, $count);
    }
    else
    {
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}
function yundanran_count_view()
{
    global $wpdb;
    $count=0;
    $views= $wpdb->get_results("SELECT * FROM $wpdb->postmeta WHERE meta_key='yundanran_post_views_count'");  //所有阅读次数
    foreach($views as $key=>$value)
    {
        $meta_value=$value->meta_value;
        if($meta_value!='')
        {
            $count+=(int)$meta_value;
        }
    }
    return $count;
}

        附：以上代码用到的函数：

get_post_meta();
delete_post_meta();
add_post_meta();
update_post_meta();
$wpdb->get_results($sql);

       主题调用显示：

       首页文章调用：在首页文章的循环里添加以下调用代码显示阅读次数：

        文章页面single.php或自定义页面添加调用代码

        整站文章阅读次数统计调用代码

        效果参考本站标题下边右上角的的日志浏览总数统计。