wordpress添加文章瀏覽統計（刷新不重復）

wordpress本身不帶文章瀏覽統計，可以用插件wp-postview，但是刷新還是算一個瀏覽次數。

1.首先在主題下functions.php里增加以下代碼，這段代碼也是網上可以找到的

//add by charleswu
function getPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if ($count == '') {
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0";
    }
    return $count;
}
function setPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if ($count == '') {
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    } else {
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}

2.解決刷新統計數增加，一定要放在文章頁面的最前面，貌似php設置cookie之前不能有輸出，蛋疼。我的是single.php頁面

<?php
    $post_id=get_the_ID();
    if(isset($_COOKIE['views'.$post_id.COOKIEHASH]) && $_COOKIE['views'.$post_id.COOKIEHASH] == '1')
    {
            
    }
    else{    
        setPostViews($post_id);
        setcookie('views'.$post_id.COOKIEHASH,'1',time() + 3600,COOKIEPATH,COOKIE_DOMAIN);//設置時間間隔
    }
?>