非插件添加文章瀏覽次數統計功能

WordPress非插件實現文章瀏覽次數統計的方法，是DH參考willin kan大師的my_visitor插件來寫的，刷新一次文章頁面就統計一次，比較簡單實用。

非插件統計文章瀏覽次數

1.在主題的 functions.php文件的最後一個 ?> 前面添加下面的代碼：

/* 訪問計數 */
function record_visitors()
{
    if (is_singular())
    {
      global $post;
      $post_ID = $post->ID;
      if($post_ID)
      {
          $post_views = (int)get_post_meta($post_ID, 'views', true);
          if(!update_post_meta($post_ID, 'views', ($post_views+1)))
          {
            add_post_meta($post_ID, 'views', 1, true);
          }
      }
    }
}
add_action('wp_head', 'record_visitors');
 
/// 函數名稱：post_views
/// 函數做用：取得文章的閱讀次數
function post_views($before = '(點擊 ', $after = ' 次)', $echo = 1)
{
  global $post;
  $post_ID = $post->ID;
  $views = (int)get_post_meta($post_ID, 'views', true);
  if ($echo) echo $before, number_format($views), $after;
  else return $views;
}

2.在須要顯示該統計次數的地方使用下面的代碼調用：

閱讀：<?php post_views(' ', ' 次'); ?>

獲取瀏覽次數最多的文章

若是要獲取上面的函數統計出來的瀏覽次數最多的文章，能夠在 functions.php文件的最後一個 ?> 前面添加下面的代碼：

/// get_most_viewed_format
/// 函數做用：取得閱讀最多的文章
function get_most_viewed_format($mode = '', $limit = 10, $show_date = 0, $term_id = 0, $beforetitle= '(', $aftertitle = ')', $beforedate= '(', $afterdate = ')', $beforecount= '(', $aftercount = ')') {
  global $wpdb, $post;
  $output = '';
  $mode = ($mode == '') ? 'post' : $mode;
  $type_sql = ($mode != 'both') ? "AND post_type='$mode'" : '';
  $term_sql = (is_array($term_id)) ? "AND $wpdb->term_taxonomy.term_id IN (" . join(',', $term_id) . ')' : ($term_id != 0 ? "AND $wpdb->term_taxonomy.term_id = $term_id" : '');
  $term_sql.= $term_id ? " AND $wpdb->term_taxonomy.taxonomy != 'link_category'" : '';
  $inr_join = $term_id ? "INNER JOIN $wpdb->term_relationships ON ($wpdb->posts.ID = $wpdb->term_relationships.object_id) INNER JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)" : '';
 
  // database query
  $most_viewed = $wpdb->get_results("SELECT ID, post_date, post_title, (meta_value+0) AS views FROM $wpdb->posts LEFT JOIN $wpdb->postmeta ON ($wpdb->posts.ID = $wpdb->postmeta.post_id) $inr_join WHERE post_status = 'publish' AND post_password = '' $term_sql $type_sql AND meta_key = 'views' GROUP BY ID ORDER BY views DESC LIMIT $limit");
  if ($most_viewed) {
   foreach ($most_viewed as $viewed) {
    $post_ID    = $viewed->ID;
    $post_views = number_format($viewed->views);
    $post_title = esc_attr($viewed->post_title);
    $get_permalink = esc_attr(get_permalink($post_ID));
    $output .= "<li>$beforetitle$post_title$aftertitle";
    if ($show_date) {
      $posted = date(get_option('date_format'), strtotime($viewed->post_date));
      $output .= "$beforedate $posted $afterdate";
    }
    $output .= "$beforecount $post_views $aftercount</li>";
   }
  } else {
   $output = "<li>N/A</li>n";
  }
  echo $output;
}

而後使用下面的函數調用：

<?php get_most_viewed_format(); ?>