Added the latest visitor feature to the WordPress blog page.

Native wp functions cannot be implemented, so they can only be used in the second place. Visitors who call recent messages will, of course, only display them once.

Put the following code in functions. php:

 

The code is as follows:

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// Obtain the latest reader Function visitors ($ tim, $ lim ){ Global $ wpdb; $ Query = "select count (comment_ID) AS cnt, comment_author, comment_author_url, comment_author_email FROM (SELECT * FROM $ wpdb-> comments left outer join $ wpdb-> posts ON ($ wpdb-> posts. ID = $ wpdb-> comments. comment_post_ID) WHERE comment_date> date_sub (NOW (), INTERVAL $ tim day) AND comment_author_email! = ''AND post_password ='' AND comment_approved = '1' AND comment_type = '') AS tempcmt group by comment_author_email order by comment_date desc limit $ lim "; $ Wall = $ wpdb-> get_results ($ query ); Foreach ($ wall as $ comment) { If ($ comment-> comment_author_url) $ Url = $ comment-> comment_author_url; Else $ url = "#"; $ R = "rel = 'external nofollow '"; $ Tmp = "<li> <a href = '". $ url. "'". $ r. "title = '". $ comment-> comment_author. "Left ". $ comment-> cnt. "Info> ". get_avatar ($ comment-> comment_author_email, 40 ). "</a> </li> "; $ Output. = $ tmp; } Echo $ output; }

The above is the core function, and then you need to make a small tool:

The code is as follows:

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// Register the Widget Add_action ('widgets _ init ', create_function ('', 'Return register_widget (" mk_visitors ");')); Class mk_visitors extends WP_Widget { // Register a WordPress gadget Function mk_visitors (){ $ This-> WP_Widget ('MK _ visitors ', 'reader wall', array ('description' => 'Show the most recent comments '));  } // Front-end display gadgets Function widget ($ args, $ instance ){ Extract ($ args, EXTR_SKIP ); Echo $ before_widget; $ Title = apply_filters ('widget _ name', $ instance ['title']); $ Limit = $ instance ['limit']; $ Timer = $ instance ['timer']; Echo $ before_title. $ title. $ after_title; Echo '<ul class = "visitors"> '; Echo visitors ($ tim = $ timer, $ lim = $ limit ); Echo '</ul> <div class = "clear"> </div> '; Echo $ after_widget;  } // Save the gadgets setting options Function update ($ new_instance, $ old_instance ){ $ Instance = $ old_instance; $ Instance ['title'] = strip_tags ($ new_instance ['title']); $ Instance ['limit'] = strip_tags ($ new_instance ['limit']); $ Instance ['timer'] = strip_tags ($ new_instance ['timer']); Return $ instance;  } // Form of background gadgets Function form ($ instance ){ $ Instance = wp_parse_args (array) $ instance, array ( 'Title' => 'Recent reader ', 'Limit' => '15 ', 'Timer' => '30'    ) ); $ Title = strip_tags ($ instance ['title']); $ Limit = strip_tags ($ instance ['limit']); $ Timer = strip_tags ($ instance ['timer ']); Echo '<p> <label> Title: <input class = "widefat" id = "'. $ this-/> get_field_id ('title '). '"name = "'. $ this-> get_field_name ('title '). '"type =" text "value = "'. $ instance ['title']. '"/> </label> </p> <label> Display quantity: <input class =" widefat "id = "'. $ this-/> get_field_id ('limit '). '"name = "'. $ this-> get_field_name ('limit '). '"type =" number "value = "'. $ instance ['limit']. '"/> </label> </p> <label> within a few days: <input class =" widefat "id = "'. $ this-/> get_field_id ('timer '). '"name = "'. $ this-> get_field_name ('timer '). '"type =" number "value = "'. $ instance ['timer']. '"/> </label> </p> ';  } }

The above description has been very careful, and then there is a style issue. This can be used freely. Below is the style of Mingkai blog:

The code is as follows:	Copy code
. Sidebar ul { List-style: none; Margin: 1.5em 0; Padding: 0; } . Sidebar ul li { Margin: 0; Padding: 5px 0; Border-top: 1px solid # ddd; Color: #969696; } . Visitors li {float: left ;}

In fact, most of them come with themes.