免插件实现WordPress文章阅读次数统计及显示

一般为Wordpress文章添加阅读次数统计，会用到wp-postviews或者wp-postviews-plus插件，这里分享两段不用插件实现Wordpress文章阅读次数的代码，供大家参考。

代码一：

一、首先将下面代码加到主题functions模版文件中：

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 View";
}
return $count.' Views';
}
function setPostViews($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);
}
}

二、接下来将下面代码加到主题single模版主循环的中：

<?php setPostViews(get_the_ID()); ?>

也就是类似这句的下面

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

三、最后，将调用显示阅读次数代码加到single模版适当的位置：

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

如果想在其它位置显示阅读次数，可以将下面代码也加到functions模版中：

remove_action（'wp_head'，'adjacent_posts_rel_link_wp_head'，10，0）;

原文：Track post views without a plugin using post meta

代码二：

一、同样将下面代码加到主题functions模版文件中：

//postviews
function get_post_views ($post_id) {
$count_key = 'views';
$count = get_post_meta($post_id, $count_key, true);
if ($count == '') {
delete_post_meta($post_id, $count_key);
add_post_meta($post_id, $count_key, '0');
$count = '0';
}
echo number_format_i18n($count);
}
function set_post_views () {
global $post;
$post_id = $post -> ID;
$count_key = 'views';
$count = get_post_meta($post_id, $count_key, true);
if (is_single() || is_page()) {
if ($count == '') {
delete_post_meta($post_id, $count_key);
add_post_meta($post_id, $count_key, '0');
} else {
update_post_meta($post_id, $count_key, $count + 1);
}
}
}
add_action('get_header', 'set_post_views');

二、将调用显示阅读次数代码加到single模版适当的位置：

<?php get_post_views($post -> ID); ?> views

调用显示阅读次数代码也可以加到其它模版文件的适当位置。

代码i源自：M2主题