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WordPress 模板制作笔记(函数functions)

分享 2015-8-11 阅读量: 1,151 TAG:
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<?php
//标题缩写
function customTitle($limit) {
    $title = get_the_title($post->ID);
    if(strlen($title) > $limit) {
        $title = substr($title, 0, $limit) . '...';
    }
 
    echo $title;
}

//缩略图
function catch_that_image() {
  global $post, $posts;
  $first_img = '';
  ob_start();
  ob_end_clean();
  $output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
  $first_img = $matches [1] [0];
  if(empty($first_img)){ //Defines a default image
     $random=rand(0,29);
     $first_img = "/wp-content/themes/egg/images/logo-2014.gif";
     //$first_img = "/wp-content/plugins/wordpress-23-related-posts-plugin/static/thumbs/".$random.".jpg";
  }
  return $first_img;}
 
 //自定义菜单
register_nav_menus( array( 'menu' => __( 'menu', '' ), ) );

 
//分页
function par_pagenavi($range = 9){
    global $paged, $wp_query;
    if ( !$max_page ) {$max_page = $wp_query->max_num_pages;}
    if($max_page > 1){if(!$paged){$paged = 1;}
    if($paged != 1){echo "<a href='" . get_pagenum_link(1) . "' class='extend' title='跳转到首页'> 返回首页 </a>";}
    previous_posts_link(' 上一页 ');
    if($max_page > $range){
        if($paged < $range){for($i = 1; $i <= ($range + 1); $i++){echo "<a href='" . get_pagenum_link($i) ."'";
        if($i==$paged)echo " class='current'";echo ">$i</a>";}}
    elseif($paged >= ($max_page - ceil(($range/2)))){
        for($i = $max_page - $range; $i <= $max_page; $i++){echo "<a href='" . get_pagenum_link($i) ."'";
        if($i==$paged)echo " class='current'";echo ">$i</a>";}}
    elseif($paged >= $range && $paged < ($max_page - ceil(($range/2)))){
        for($i = ($paged - ceil($range/2)); $i <= ($paged + ceil(($range/2))); $i++){echo "<a href='" . get_pagenum_link($i) ."'";if($i==$paged) echo " class='current'";echo ">$i</a>";}}}
    else{for($i = 1; $i <= $max_page; $i++){echo "<a href='" . get_pagenum_link($i) ."'";
    if($i==$paged)echo " class='current'";echo ">$i</a>";}}
    next_posts_link(' 下一页 ');
    if($paged != $max_page){echo "<a href='" . get_pagenum_link($max_page) . "' class='extend' title='跳转到最后一页'> 最后一页 </a>";}}
}


 //阅读次数
 //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');  






//在24小时以内发布的显示为几分钟前或几小时前
function timeago() {
 global $post;
 $date = $post->post_date;
 $time = get_post_time('G', true, $post);
 $time_diff = time() - $time;
 if ( $time_diff > 0 && $time_diff < 24*60*60 )
 $display = sprintf( __('%s 前'), human_time_diff( $time ) );
 else
 $display = date(get_option('date_format'), strtotime($date) );
 
 return $display;
}
add_filter('the_time', 'timeago');




//文章点击次数
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 ";
    }
    return $count.'';
}
function setPostViews($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);
    }
}


//文章简介
function excerptcontent($max_length) {$title_str = get_the_content();if (mb_strlen($title_str,'utf-8') > $max_length ) {$title_str = mb_substr($title_str,0,$max_length,'utf-8').'...';}return $title_str;}


// 热评文章
function simple_get_most_viewed($posts_num=10, $days=7){
global $wpdb;
$sql = "SELECT ID , post_title , comment_count
FROM $wpdb->posts
WHERE post_type = 'post' AND TO_DAYS(now()) - TO_DAYS(post_date) < $days
ORDER BY comment_count DESC LIMIT 0 , $posts_num "
;
$posts = $wpdb->get_results($sql);
$output = "";
foreach ($posts as $post){
$output .= "\n<li><a href= "".get_permalink($post->ID)."" rel="bookmark" title="".$post->post_title." (".$post->comment_count."条评论)" >".$post->post_title."</a></li>";
}
echo $output;
}

//最新评论
function h_comments($outer,$limit){
    global $wpdb;
    $sql = "SELECT DISTINCT ID, post_title, post_password, comment_ID, comment_post_ID, comment_author, comment_date_gmt, comment_approved, comment_type,comment_author_url,comment_author_email, SUBSTRING(comment_content,1,22) AS com_excerpt FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts ON ($wpdb->comments.comment_post_ID = $wpdb->posts.ID) WHERE comment_approved = '1' AND comment_type = '' AND post_password = '' AND user_id='0' AND comment_author != '$outer' ORDER BY comment_date_gmt DESC LIMIT $limit";
    $comments = $wpdb->get_results($sql);
    foreach ($comments as $comment) {
        $output .= '<li class="re-comment">
         <div class="re-avatar">  <img class="avatar avatar-35 photo" width="35" height="35" src="/wp-content/themes/dianyingbt/default-35.png" alt="访客默认头像" data-bd-imgshare-binded="1">   </div>
         <div class="re-content"> <div class="re-author"><apan>'
.strip_tags($comment->comment_author).':</apan></div>  
        <div class="re-excerpt"> <a href="'
. get_permalink($comment->ID) .'#comment-' . $comment->comment_ID . '" title="《'.$comment->post_title . '》上的评论" ><span class="s_desc">'. strip_tags($comment->com_excerpt).'</span></a></div
        ></li>
        <div style="clear:both"></div>
        '
;
 
    }
    $output = convert_smilies($output);
    echo $output;
}
/**
 * 使用api获取<a title="查看与城市有关的文章" href="http://cuelog.com/tag/%e5%9f%8e%e5%b8%82" target="_blank">城市</a>名
 * @param string $ip
 * @return string|mixed
 */

 function convertip($ip) {  
    $dat_path = TEMPLATEPATH.'/QQWry.Dat';  
    if(!$fd = @fopen($dat_path, 'rb')){  
        return '未知地区用户!';  
    }  
    $ip = explode('.', $ip);  
    $ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];  
    $DataBegin = fread($fd, 4);  
    $DataEnd = fread($fd, 4);  
    $ipbegin = implode('', unpack('L', $DataBegin));  
    if($ipbegin < 0) $ipbegin += pow(2, 32);  
    $ipend = implode('', unpack('L', $DataEnd));  
    if($ipend < 0) $ipend += pow(2, 32);  
    $ipAllNum = ($ipend - $ipbegin) / 7 + 1;  
    $BeginNum = 0;  
    $EndNum = $ipAllNum;  
    while($ip1num>$ipNum || $ip2num<$ipNum) {  
        $Middle= intval(($EndNum + $BeginNum) / 2);  
        fseek($fd, $ipbegin + 7 * $Middle);  
        $ipData1 = fread($fd, 4);  
        if(strlen($ipData1) < 4) {  
            fclose($fd);  
            return '系统出错!';  
        }  
        $ip1num = implode('', unpack('L', $ipData1));  
        if($ip1num < 0) $ip1num += pow(2, 32);  
        if($ip1num > $ipNum) {  
            $EndNum = $Middle;  
            continue;  
        }  
        $DataSeek = fread($fd, 3);  
        if(strlen($DataSeek) < 3) {  
            fclose($fd);  
            return '系统出错!';  
        }  
        $DataSeek = implode('', unpack('L', $DataSeek.chr(0)));  
        fseek($fd, $DataSeek);  
        $ipData2 = fread($fd, 4);  
        if(strlen($ipData2) < 4) {  
            fclose($fd);  
            return '系统出错!';  
        }  
        $ip2num = implode('', unpack('L', $ipData2));  
        if($ip2num < 0) $ip2num += pow(2, 32);  
        if($ip2num < $ipNum) {  
            if($Middle == $BeginNum) {  
                fclose($fd);  
                return '未知';  
            }  
            $BeginNum = $Middle;  
        }  
    }  
    $ipFlag = fread($fd, 1);  
    if($ipFlag == chr(1)) {  
        $ipSeek = fread($fd, 3);  
        if(strlen($ipSeek) < 3) {  
            fclose($fd);  
            return '系统出错!';  
        }  
        $ipSeek = implode('', unpack('L', $ipSeek.chr(0)));  
        fseek($fd, $ipSeek);  
        $ipFlag = fread($fd, 1);  
    }  
    if($ipFlag == chr(2)) {  
        $AddrSeek = fread($fd, 3);  
        if(strlen($AddrSeek) < 3) {  
            fclose($fd);  
            return '系统出错!';  
        }  
        $ipFlag = fread($fd, 1);  
        if($ipFlag == chr(2)) {  
            $AddrSeek2 = fread($fd, 3);  
            if(strlen($AddrSeek2) < 3) {  
                fclose($fd);  
                return '系统出错!';  
            }  
            $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));  
            fseek($fd, $AddrSeek2);  
        } else {  
            fseek($fd, -1, SEEK_CUR);  
        }  
        while(($char = fread($fd, 1)) != chr(0))  
        $ipAddr2 .= $char;  
        $AddrSeek = implode('', unpack('L', $AddrSeek.chr(0)));  
        fseek($fd, $AddrSeek);  
        while(($char = fread($fd, 1)) != chr(0))  
        $ipAddr1 .= $char;  
    } else {  
        fseek($fd, -1, SEEK_CUR);  
        while(($char = fread($fd, 1)) != chr(0))  
        $ipAddr1 .= $char;  
 
        $ipFlag = fread($fd, 1);  
        if($ipFlag == chr(2)) {  
            $AddrSeek2 = fread($fd, 3);  
            if(strlen($AddrSeek2) < 3) {  
                fclose($fd);  
                return '系统出错!';  
            }  
            $AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));  
            fseek($fd, $AddrSeek2);  
        } else {  
            fseek($fd, -1, SEEK_CUR);  
        }  
        while(($char = fread($fd, 1)) != chr(0)){  
            $ipAddr2 .= $char;  
        }  
    }  
    fclose($fd);  
    if(preg_match('/http/i', $ipAddr2)) {  
        $ipAddr2 = '';  
    }  
    $ipaddr = "$ipAddr1 $ipAddr2";  
    $ipaddr = preg_replace('/CZ88.Net/is', '', $ipaddr);  
    $ipaddr = preg_replace('/^s*/is', '', $ipaddr);  
    $ipaddr = preg_replace('/s*$/is', '', $ipaddr);  
    if(preg_match('/http/i', $ipaddr) || $ipaddr == '') {  
        $ipaddr = '未知';  
    }  
    $ipaddr = iconv('gbk', 'utf-8//IGNORE', $ipaddr);    
    if( $ipaddr != '  ' )  
        return $ipaddr;  
    else  
        $ipaddr = '评论者来自火星,无法或者其所在地!';  
        return $ipaddr;  
}
 


//评论列表
function commentlist($comment,$args,$depth){
    $GLOBALS['comment']=$comment;
    //主评论计数器 by zwwooooo
    global $commentcount, $page, $wpdb;
    if ( (int) get_option('page_comments') === 1 && (int) get_option('thread_comments') === 1 ) { //开启嵌套评论和分页才启用
        if(!$commentcount) { //初始化楼层计数器
            $page = ( !empty($in_comment_loop) ) ? get_query_var('cpage') : get_page_of_comment( $comment->comment_ID, $args ); //获取当前评论列表页码
            $cpp = get_option('comments_per_page'); //获取每页评论显示数量
            if ( get_option('comment_order') === 'desc' ) { //倒序
                $comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_post_ID = $post->ID AND comment_type = 'all' AND comment_approved = '1' AND !comment_parent");
                $cnt = count($comments); //获取主评论总数量
                if (ceil($cnt / $cpp) == 1 || ($page > 1 && $page  == ceil($cnt / $cpp))) { //如果评论只有1页或者是最后一页,初始值为主评论总数
                    $commentcount = $cnt + 1;
                } else {
                    $commentcount = $cpp * $page + 1;
                }
            } else {
                $commentcount = $cpp * ($page - 1);
            }
        }
        if ( !$parent_id = $comment->comment_parent ) {
            $commentcountText = '<div class="floor">';
            if ( get_option('comment_order') === 'desc' ) { //倒序
                $commentcountText .= '#' . ++$commentcount;
            } else {
                $commentcountText .= '#' . ++$commentcount;
            }
            $commentcountText .= '</div>';
        }
    }
    ?>
 
       
         <li class="comment guest-comment" id="comment-<?php comment_ID ?>">
  <div class="comment-meta">
   <div class="comment-meta-left">
     <img class="avatar avatar-35 photo" width="35" height="35" src="/wp-content/themes/dianyingbt/default-35.png" alt="访客默认头像" data-bd-imgshare-binded="1">    <ul class="comment-name-date">
     <li class="comment-name">
<span id="commentauthor-7238">
游客</span>
     </li>
     <li class="comment-date"><?php the_time('Y年n月j日  G:h') ?>   来自<?php if ( is_user_logged_in() ) echo convertip(get_comment_author_ip()); ?>的网友
 
</li>
    </ul>
   </div>
   <ul class="comment-act">
    <li class="comment-reply">
    <?php comment_reply_link(array_merge($args,array('reply_text' =>'回复','depth' =>$depth,'max_depth'=>$args['max_depth']))) ?>
    </li>
<li class="comment-number">          
  <?php
switch ($commentcount){
    case 0 :echo "沙发";++$commentcount;break;
    case 1 :echo "椅子";++$commentcount;break;
    case 2 :echo "板凳";++$commentcount;break;
    default:printf('%1$s楼:', ++$commentcount);
}
?></li>       </ul>
  </div>
  <div class="comment-content" id="comment-content-7238">
  <?php if($comment->comment_approved=='0'): ?>
                    <em><span class="moderation"><?php _e('您的评论正在等待审核.') ?></span></em>
                <?php endif; ?>
                <br>
    <p><?php comment_text() ?></p>
  </div>
    <?php echo $commentcountText;?>
 
<?php
}

//冒充评论检验
function CheckEmailAndName(){
    global $wpdb;
    $comment_author       = ( isset($_POST['author']) )  ? trim(strip_tags($_POST['author'])) : null;
    $comment_author_email = ( isset($_POST['email']) )   ? trim($_POST['email']) : null;
    if(!$comment_author || !$comment_author_email){
        return;
    }
    $result_set = $wpdb->get_results("SELECT display_name, user_email FROM $wpdb->users WHERE display_name = '" . $comment_author . "' OR user_email = '" . $comment_author_email . "'");
    if ($result_set) {
        if ($result_set[0]->display_name == $comment_author){
            err(__('警告: 您不能使用博主的昵称!'));
        }else{
            err(__('警告: 您不能使用博主的邮箱!'));
        }
        fail($errorMessage);
    }
}
add_action('pre_comment_on_post', 'CheckEmailAndName');

/* 评论必须有中文和禁止某些字段出现 */    
function lianyue_comment_post( $incoming_comment ) {    
$pattern = '/[一-龥]/u';    
$http = '/[.|<|妈|逼|滚|贱|淫|互|娘|爹|孙|友|夜|ッ|の|ン|優|業|グ|貿|]/u';  
// 禁止全英文评论  
if(!preg_match($pattern, $incoming_comment['comment_content'])) {  
wp_die( "请认真评论好吗?您这样随意打乱码对站长也太不尊敬了吧,你觉得呢?" );  
}elseif(preg_match($http, $incoming_comment['comment_content'])) {  
wp_die( "万恶的发贴机,这里不允许出现连点号,更请您文明用语!" );    
}    
return( $incoming_comment );    
}    
add_filter('preprocess_comment', 'lianyue_comment_post');

//评论邮件自动通知
function comment_mail_notify($comment_id) {
  $admin_email = get_bloginfo ('admin_email');
  $comment = get_comment($comment_id);
  $comment_author_email = trim($comment->comment_author_email);
  $parent_id = $comment->comment_parent ? $comment->comment_parent : '';
  $to = $parent_id ? trim(get_comment($parent_id)->comment_author_email) : '';
  $spam_confirmed = $comment->comment_approved;
  if (($parent_id != '') && ($spam_confirmed != 'spam') && ($to != $admin_email) && ($comment_author_email == $admin_email)) {
    $wp_email = 'no-reply@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME']));
    $subject = '您在 [' . get_option("blogname") . '] 的评论有新的回复';
    $message = '
    <div style="font: 13px Microsoft Yahei;padding: 0px 20px 0px 20px;border: #ccc 1px solid;border-left-width: 4px; max-width: 600px;margin-left: auto;margin-right: auto;">
      <p>'
. trim(get_comment($parent_id)->comment_author) . ', 您好!</p>
      <p>您曾在 ['
. get_option("blogname") . '] 的文章 《' . get_the_title($comment->comment_post_ID) . '》 上发表评论:<br />'
       . nl2br(get_comment($parent_id)->comment_content) . '</p>
      <p>'
. trim($comment->comment_author) . ' 给您的回复如下:<br>'
       . nl2br($comment->comment_content) . '</p>
      <p style="color:#f00">您可以点击 <a href="'
. htmlspecialchars(get_comment_link($parent_id, array('type' => 'comment'))) . '">查看回复的完整內容</a></p>
      <p style="color:#f00">欢迎再次光临 <a href="'
. get_option('home') . '">' . get_option('blogname') . '</a></p>
      <p style="color:#999">(此邮件由系统自动发出,请勿回复。)</p>
    </div>'
;
    $message = convert_smilies($message);
    $from = "From: "" . get_option('blogname') . "" <$wp_email>";
    $headers = "$from\nContent-Type: text/html; charset=" . get_option('blog_charset') . "\n";
    wp_mail( $to, $subject, $message, $headers );
  }
}
add_action('comment_post', 'comment_mail_notify');

//ajax评论翻页
function AjaxCommentsPage(){
    if( isset($_GET['action'])&& $_GET['action'] == 'AjaxCommentsPage'  ){
        global $post,$wp_query, $wp_rewrite;
        $postid = isset($_GET['post']) ? $_GET['post'] : null;
        $pageid = isset($_GET['page']) ? $_GET['page'] : null;
        if(!$postid || !$pageid){
            fail(__('Error post id or comment page id.'));
        }
        // get comments
        $comments = get_comments('post_id='.$postid);
        $post = get_post($postid);
        if(!$comments){
            fail(__('Error! can\'t find the comments'));
        }
        //if( 'desc' != get_option('comment_order') ){
        //  $comments = array_reverse($comments);
        //}
        $comments = array_reverse($comments);//?有点不明白
        // set as singular (is_single || is_page || is_attachment)
        $wp_query->is_singular = true;
        // base url of page links
        $baseLink = '';
        if ($wp_rewrite->using_permalinks()) {
            $baseLink = '&base=' . user_trailingslashit(get_permalink($postid) . 'comment-page-%#%', 'commentpaged');
        }
        // response 注意修改callback为你自己的,没有就去掉callback
        wp_list_comments('callback=commentlist&type=comment&max_depth=10000&page=' . $pageid . '&per_page=' . get_option('comments_per_page'), $comments);
        echo '<!--winysky-AJAX-COMMENT-PAGE-->';
        echo '<span id="cp_post_id" style="display:none;">
            '
.$post->ID.'
        </span>'
;
        paginate_comments_links('current=' . $pageid . $baseLink);
        die;
    }
}
add_action('init', 'AjaxCommentsPage');


//压缩html代码
function wp_compress_html()
{
function wp_compress_html_main ($buffer)
{
    $initial=strlen($buffer);
    $buffer=explode("<!--wp-compress-html-->", $buffer);
    $count=count ($buffer);
    for ($i = 0; $i <= $count; $i++)
    {
        if (stristr($buffer[$i], '<!--wp-compress-html no compression-->'))
        {
            $buffer[$i]=(str_replace("<!--wp-compress-html no compression-->", " ", $buffer[$i]));
        }
        else
        {
            $buffer[$i]=(str_replace("\t", " ", $buffer[$i]));
            $buffer[$i]=(str_replace("\n\n", "\n", $buffer[$i]));
            $buffer[$i]=(str_replace("\n", "", $buffer[$i]));
            $buffer[$i]=(str_replace("\r", "", $buffer[$i]));

            while (stristr($buffer[$i], '  '))
            {
            $buffer[$i]=(str_replace("  ", " ", $buffer[$i]));
            }
        }
        $buffer_out.=$buffer[$i];
    }
    //$final=strlen($buffer_out);
    //$savings=($initial-$final)/$initial*100;
    //$savings=round($savings, 2);
    //$buffer_out.="\n<!--压缩前的大小: $initial bytes; 压缩后的大小: $final bytes; 节约:$savings% -->";
    return $buffer_out;
}
ob_start("wp_compress_html_main");
}
add_action('get_header', 'wp_compress_html');

//评论后显示
function reply_to_read($atts, $content=null) {  
        extract(shortcode_atts(array("notice" => '<p class="reply-to-read">温馨提示: 此处内容需要<a href="#respond" title="评论本文">评论本文</a>后才能查看.</p>'), $atts));  
        $email = null;  
        $user_ID = (int) wp_get_current_user()->ID;  
        if ($user_ID > 0) {  
            $email = get_userdata($user_ID)->user_email;  
            //对博主直接显示内容  
            $admin_email = " "; //博主Email  
            if ($email == $admin_email) {  
                return $content;  
            }  
        } else if (isset($_COOKIE['comment_author_email_' . COOKIEHASH])) {  
            $email = str_replace('%40', '@', $_COOKIE['comment_author_email_' . COOKIEHASH]);  
        } else {  
            return $notice;  
        }  
        if (empty($email)) {  
            return $notice;  
        }  
        global $wpdb;  
        $post_id = get_the_ID();  
        $query = "SELECT `comment_ID` FROM {$wpdb->comments} WHERE `comment_post_ID`={$post_id} and `comment_approved`='1' and `comment_author_email`='{$email}' LIMIT 1";  
        if ($wpdb->get_results($query)) {  
            return do_shortcode($content);  
        } else {  
            return $notice;  
        }  
    }  
 
    add_shortcode('reply', 'reply_to_read');
   
//边栏彩色标签
function colorCloud($text) {
    $text = preg_replace_callback('|<a (.+?)>|i','colorCloudCallback', $text);
    return $text;
}
function colorCloudCallback($matches) {
    $text = $matches[1];
    $color = dechex(rand(0,16777215));
    $pattern = '/style=(\'|\”)(.*)(\'|\”)/i';
    $text = preg_replace($pattern, "style="color:#{$color};$2;"", $text);
    return "<a $text>";
}
add_filter('wp_tag_cloud', 'colorCloud', 1);


//准备要创建的字段信息
 $new_meta_boxes =  
array(  
    "xiazaiurl" => array(  
        "name" => "xiazaiurl",  
        "std" => "下载地址",  
        "title" => "下载地址:"),  
 
   "wenzi" => array(
    "name" => "wenzi",
    "std" => "文字下载链接",
    "title" => "文字下载链接:")
);



 
//创建(显示)面板内容的函数
function new_meta_boxes() {  
    global $post, $new_meta_boxes;  
 
    foreach($new_meta_boxes as $meta_box) {  
        $meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);  
 
        if($meta_box_value == "")  
            $meta_box_value = $meta_box['std'];  
 
        echo'<input type="hidden" name="'.$meta_box['name'].'_noncename" id="'.$meta_box['name'].'_noncename" value="'.wp_create_nonce( plugin_basename(__FILE__) ).'" />';  
 
        // 自定义字段标题  
        echo'<h4>'.$meta_box['title'].'</h4>';  
 
        // 自定义字段输入框  
        echo '<textarea cols="60" rows="3" name="'.$meta_box['name'].'_value">'.$meta_box_value.'</textarea><br />';  
    }  
}
 

//显示
function create_meta_box() {  
    global $theme_name;  
 
    if ( function_exists('add_meta_box') ) {  
        add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );  
    }  
}  

//保存更新
function save_postdata( $post_id ) {  
    global $post, $new_meta_boxes;  
 
    foreach($new_meta_boxes as $meta_box) {  
        if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) ))  {  
            return $post_id;  
        }  
 
        if ( 'page' == $_POST['post_type'] ) {  
            if ( !current_user_can( 'edit_page', $post_id ))  
                return $post_id;  
        }    
        else {  
            if ( !current_user_can( 'edit_post', $post_id ))  
                return $post_id;  
        }  
 
        $data = $_POST[$meta_box['name'].'_value'];  
 
        if(get_post_meta($post_id, $meta_box['name'].'_value') == "")  
            add_post_meta($post_id, $meta_box['name'].'_value', $data, true);  
        elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))  
            update_post_meta($post_id, $meta_box['name'].'_value', $data);  
        elseif($data == "")  
            delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));  
    }  
}  

//触发
add_action('admin_menu', 'create_meta_box');  
add_action('save_post', 'save_postdata');

?>

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