侧边栏添加信息统计小工具

有两种方式：

（方式一）在主题目录下创建widget-websitestat.php文件，然后把下面的php代码添加进去。

代码：

<?php
// WordPress统计信息小工具
// 名称: 网站信息统计

// 定义小工具的类 EfanWebsitestat
class EfanWebsitestat extends WP_Widget{

  function __construct(){
    // 定义小工具的构造函数
    $widget_ops = array(classname => widget_Websitestat, description => 显示网站的统计信息);
    parent::__construct(false, WIIUII 网站统计, $widget_ops);
  }
  
  function form($instance){
    // 表单函数,控制后台显示
    // $instance 为之前保存过的数据
    // 如果之前没有数据的话,设置默认量
    $instance = wp_parse_args(
      (array)$instance,
      array(
        title => 网站信息统计,
        establish_time => 2021-01-01
      )
    );
    
    $title = htmlspecialchars($instance[title]);
    $establish_time = htmlspecialchars($instance[establish_time]);
    
    // 表格布局输出表单
    $output = <table>;
    $output .= <tr><td>标题</td><td>;
    $output .= <input id=".$this->get_field_id(title) ." name=".$this->get_field_name(title)." type="text" value=".$instance[title]." />;
    $output .= </td></tr><tr><td>建站时间：</td><td>;   
    $output .= <input id=".$this->get_field_id(establish_time) ." name=".$this->get_field_name(establish_time)." type="text" value=".$instance[establish_time]." />;   
    $output .= </td></tr></table>;  
    echo $output;   
  }
  
  function update($new_instance, $old_instance){
    // 更新数据的函数
    $instance = $old_instance;
    // 数据处理
    $instance[title] = strip_tags(stripslashes($new_instance[title]));
    $instance[establish_time] = strip_tags(stripslashes($new_instance[establish_time]));
    return $instance;
  }
  
  function widget($args, $instance){
    extract($args); //展开数组
    $title = apply_filters(widget_title,empty($instance[title]) ?   : $instance[title]);
    $establish_time = empty($instance[establish_time]) ? 2021-01-01 : $instance[establish_time];
    echo $before_widget;
    echo $before_title . $title . $after_title;
    echo <div class="widgest-boys"><ul>;
    $this->efan_get_websitestat($establish_time);
    echo </ul></div>;
    echo $after_widget;
  }
  
  function efan_get_websitestat($establish_time){
    // 相关数据的获取
    global $wpdb;
    $count_posts = wp_count_posts();
    $published_posts = $count_posts->publish;
    $comments_count = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->comments");
    $time = floor((time()-strtotime($establish_time))/86400);
    $count_tags = wp_count_terms(post_tag);
    $count_pages = wp_count_posts(page);
    $link = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->links WHERE link_visible = Y"); 
    $users = $wpdb->get_var("SELECT COUNT(ID) FROM $wpdb->users");
    $last = $wpdb->get_results("SELECT MAX(post_modified) AS MAX_m FROM $wpdb->posts WHERE (post_type = post OR post_type = page) AND (post_status = publish OR post_status = private)");
    $last = date(Y-m-d, strtotime($last[0]->MAX_m));
    $total_views = $wpdb->get_var("SELECT SUM(meta_value+0) FROM $wpdb->postmeta WHERE meta_key = views");  
    // 显示数据
    $output = <div class="widgest-bg widgest-bg1"><div class="widgest-main"><div class="widgest-meat"><li>文章总数：;
    $output .= $published_posts;
    $output .=  篇</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg2"><div class="widgest-main"><div class="widgest-meat"><li>评论数目：;
    $output .= $comments_count;
    $output .=  条</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg3"><div class="widgest-main"><div class="widgest-meat"><li>标签总数：;
    $output .= $count_tags;
    $output .=  个</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg4"><div class="widgest-main"><div class="widgest-meat"><li>浏览次数：;
    $output .= $total_views;
    $output .=  次</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg5"><div class="widgest-main"><div class="widgest-meat"><li>友链总数：;
    $output .= $link;
    $output .=  个</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg6"><div class="widgest-main"><div class="widgest-meat"><li>用户总数：;
    $output .= $users;
    $output .=  个</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg7"><div class="widgest-main"><div class="widgest-meat"><li>运行天数：;
    $output .= $time;
    $output .=  天</li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg8"><div class="widgest-main"><div class="widgest-meat"><li>建站时间：;
    $output .= $establish_time;
    $output .= </li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg9"><div class="widgest-main"><div class="widgest-meat"><li>最后更新：;
    $output .= $last;
    $output .= </li></div></div></div>;
    //   页面生成耗时+数据库查询  
    $output .= <div class="widgest-bg widgest-bg10"><div class="widgest-main"><div class="widgest-meat"><li>数据查询：;
    $output .= get_num_queries();
    $output .=  次 </li></div></div></div>;
    $output .= <div class="widgest-bg widgest-bg11"><div class="widgest-main"><div class="widgest-meat"><li>生成耗时：;
    $output .= timer_stop(0,5);
    $output .= 秒</li></div></div></div>;
    
    echo $output;
  }
}

function EfanWebsitestat(){
  // 注册小工具
  register_widget(EfanWebsitestat);
}

add_action(widgets_init,EfanWebsitestat);

?>

（方式二）本站已经创建好文件，免去了你自己创建文件，在文章末尾处“资源下载”下载文件，然后上传到主题目录下即可。

2、在主题目录下functions.php文件，添加下面的函数代码即可。

//添加站点统计小工具
include("widget-websitestat.php");

3、在网站后台—》主题设置—》自定义代码—》自定义CSS样式，添加下面的CSS代码，主题没有自定义CSS样式的，在主题目录下style.css添加即可。

/*统计小模块*/
.widget_Websitestat h3{font-weight:700;}.widgest-boys{overflow:hidden;}.widgest-boys .widgest-bg{margin: 4px; background-size: cover; background-repeat: no-repeat; background-position: center center; cursor: pointer; border-radius: 8px;}.widgest-boys .widgest-main{align-items: center; place-content: flex-start space-around; display: flex;}.widgest-boys .widgest-meat{display: block; margin-block-start: 1em; margin-block-end: 1em; margin-inline-start: 0px; margin-inline-end: 0px; color: rgb(255, 255, 255); font-weight: 700 !important; line-height: 1.5 !important;}.widgest-bg:not(article){transition: all 0.3s;}.widgest-bg:not(article):hover{transform: translateX(-10px);}
/*图片路径设置*/
.widgest-bg1{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_1.jpeg);}
.widgest-bg2{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_2.jpeg);}
.widgest-bg3{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_3.jpeg);}
.widgest-bg4{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_4.jpeg);}
.widgest-bg5{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_5.jpeg);}
.widgest-bg6{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_6.jpeg);}
.widgest-bg7{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_7.jpeg);}
.widgest-bg8{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_8.jpeg);}
.widgest-bg9{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_9.jpeg);}
.widgest-bg10{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_10.jpeg);}
.widgest-bg11{background-image: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.2)),url(https://www.cunshao.com/666666/meihua/img/202265214415536a8ec8a13632762d0e984c674694de6f2533dc6e9_11.jpeg);}