functions.php

<?php
if (!defined('__TYPECHO_ROOT_DIR__')) exit;

function themeConfig($form) {
    $logoUrl = new Typecho_Widget_Helper_Form_Element_Text('logoUrl', NULL, NULL, _t('站点 LOGO 地址'), _t('在这里填入一个图片 URL 地址, 以在网站标题前加上一个 LOGO。如：/usr/themes/pui/img/logo.png'));
    $form->addInput($logoUrl);
    
    $sidebarBlock = new Typecho_Widget_Helper_Form_Element_Checkbox('sidebarBlock', 
    array('ShowRecentPosts' => _t('显示最新文章'),
    'ShowRecentComments' => _t('显示最近回复'),
    'ShowCategory' => _t('显示分类'),
    'ShowArchive' => _t('显示归档'),
    'ShowOther' => _t('显示其它杂项')),
    array('ShowRecentPosts', 'ShowRecentComments', 'ShowCategory', 'ShowArchive', 'ShowOther'), _t('侧边栏显示'));
    
    $form->addInput($sidebarBlock->multiMode());
    
    $slimg = new Typecho_Widget_Helper_Form_Element_Select('slimg', array(
        'showon'=>'有图文章显示缩略图，无图文章随机显示缩略图',
        'Showimg' => '有图文章显示缩略图，无图文章只显示一张固定的缩略图',      
        'showoff' => '有图文章显示缩略图，无图文章则不显示缩略图',
        'allsj' => '所有文章一律显示随机缩略图',
        'guanbi' => '关闭所有缩略图显示'
    ), 'showon',
    _t('缩略图设置'), _t('默认选择“有图文章显示缩略图，无图文章随机显示缩略图”'));
    $form->addInput($slimg->multiMode());
}

/*
 * 获取浏览次数
 */
function get_post_view($archive)
{
    $cid    = $archive->cid;
    $db     = Typecho_Db::get();
    $prefix = $db->getPrefix();
    if (!array_key_exists('views', $db->fetchRow($db->select()->from('table.contents')))) {
        $db->query('ALTER TABLE `' . $prefix . 'contents` ADD `views` INT(10) DEFAULT 0;');
        echo 0;
        return;
    }
    $row = $db->fetchRow($db->select('views')->from('table.contents')->where('cid = ?', $cid));
    if ($archive->is('single')) {
 $views = Typecho_Cookie::get('extend_contents_views');
        if(empty($views)){
            $views = array();
        }else{
            $views = explode(',', $views);
        }
if(!in_array($cid,$views)){
       $db->query($db->update('table.contents')->rows(array('views' => (int) $row['views'] + 1))->where('cid = ?', $cid));
array_push($views, $cid);
            $views = implode(',', $views);
            Typecho_Cookie::set('extend_contents_views', $views); //记录查看cookie
        }
    }
    echo $row['views'];
}

/*
 * 文章缩略图自定义字段
 */
function themeFields($layout) {
    $thumb = new Typecho_Widget_Helper_Form_Element_Text('thumb', NULL, NULL, _t('自定义缩略图'), _t('输入缩略图地址(仅文章有效)'));
    $layout->addItem($thumb);
}
/** 输出文章缩略图 */
function showThumbnail($widget)
{ 
    // 当文章无图片时的默认缩略图
    $dir = './usr/themes/pui/img/sj/';//随机缩略图目录
    $n=sizeof(scandir($dir))-2;
    if($n <= 0){
    $n=99;
    }// 异常处理，干掉自动判断图片数量的功能，切换至手动
    $rand = rand(1,$n); 
    // 随机 n张缩略图
 
    $random = $widget->widget('Widget_Options')->themeUrl . '/img/sj/' . $rand . '.jpg'; // 随机缩略图路径
if(Typecho_Widget::widget('Widget_Options')->slimg && 'Showimg'==Typecho_Widget::widget('Widget_Options')->slimg
){
  $random = $widget->widget('Widget_Options')->themeUrl . '/img/mr.png'; //无图时只显示固定一张缩略图
}

$cai = '?imageView2/1/w/200/h/200/q/75|imageslim';//这里可以添加图片后缀，例如七牛的缩略图裁剪规则，这里默认为空
    $attach = $widget->attachments(1)->attachment;
    $pattern = '/\<img.*?src\=\"(.*?)\"[^>]*>/i'; 
  $patternMD = '/\!\[.*?\]\((http(s)?:\/\/.*?(jpg|png))/i';
    $patternMDfoot = '/\[.*?\]:\s*(http(s)?:\/\/.*?(jpg|png))/i';
if (preg_match_all($pattern, $widget->content, $thumbUrl)) {
$ctu = $thumbUrl[1][0].$cai;
    }

//如果是内联式markdown格式的图片
  else   if (preg_match_all($patternMD, $widget->content, $thumbUrl)) {
$ctu = $thumbUrl[1][0].$cai;
    }
    //如果是脚注式markdown格式的图片
    else if (preg_match_all($patternMDfoot, $widget->content, $thumbUrl)) {
$ctu = $thumbUrl[1][0].$cai;
    }

 else
if ($attach && $attach->isImage) {

$ctu = $attach->url.$cai;
    } 
else 

if ($widget->tags) {
foreach ($widget->tags as $tag) {

    $ctu = './usr/themes/pui/img/tag/' . $tag['slug'] . '.jpg';

    if(is_file($ctu))
    { 
$ctu = $widget->widget('Widget_Options')->themeUrl . '/img/tag/' . $tag['slug'] . '.jpg';
    }
    else
 {
       $ctu = $random;
    }
break;
}
}
else {
$ctu = $random;
}
if(Typecho_Widget::widget('Widget_Options')->slimg && 'showoff'==Typecho_Widget::widget('Widget_Options')->slimg
){
if($widget->fields->thumb){$ctu = $widget->fields->thumb;}
if($ctu== $random)
echo '';
else
if($widget->is('post')||$widget->is('page')){
echo $ctu;
}else{
echo '<img src="'
.$ctu.
'">';
}
}else{
if($widget->fields->thumb){$ctu = $widget->fields->thumb;}
  if(!$widget->is('post')&&!$widget->is('page')){
if(Typecho_Widget::widget('Widget_Options')->slimg && 'allsj'==Typecho_Widget::widget('Widget_Options')->slimg
){$ctu = $random;}
}
echo $ctu;
}
}

//获取评论的锚点链接
function get_comment_at($coid)
{
    $db = Typecho_Db::get();
    $prow = $db->fetchRow($db->select('parent')->from('table.comments')
        ->where('coid = ? AND status = ?', $coid, 'approved'));
    $parent = $prow['parent'];
    if ($parent != "0") {
        $arow = $db->fetchRow($db->select('author')->from('table.comments')
            ->where('coid = ? AND status = ?', $parent, 'approved'));
        $author = $arow['author'];
        $href = '<a href="#comment-' . $parent . '">@' . $author . '</a>';
        echo $href;
    } else {
        echo '';
    }
}

//输出评论内容
function get_filtered_comment($coid)
{
    $db = Typecho_Db::get();
    $rs = $db->fetchRow($db->select('text')->from('table.comments')
        ->where('coid = ? AND status = ?', $coid, 'approved'));
    $content = $rs['text'];
    echo $content;
}