WordPress 기사 읽기가 계산되고 표시되는 방법에 대한 자세한 설명(플러그인 아님)

function getPostViews($postID){
    $count_key = 'views';
    $count = get_post_meta($postID, $count_key, true);
    if($count=='' || !$count){
        return "0";
    }
    return $count;
}
function setPostViews($postID){
    $count_key = 'views';
    $count = get_post_meta($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);
    }
}

<?php  
if(!isset($_COOKIE[&#39;views&#39;.$post->ID.COOKIEHASH]) || $_COOKIE['views'.$post->ID.COOKIEHASH] != '1'){
    setPostViews($post->ID);
    setcookie('views'.$post->ID.COOKIEHASH,'1',time() + 99999999,COOKIEPATH,COOKIE_DOMAIN);
} 
?>

<?php  echo getPostViews(get_the_ID());?>