Typecho常用函数合集

以下为代码片段（方法）及对应的调用方式；代码片段请放置于 function.php 中

输出文章缩略图

/** 输出文章缩略图 */
function showThumbnail($widget)
{
    // 当文章无图片时的默认缩略图
    $rand = rand(1,5); // 随机 1-5 张缩略图
    $random = $widget->widget('Widget_Options')->themeUrl . '/img/sj/' . $rand . '.jpg'; // 随机缩略图路径
   // $random = $widget->widget('Widget_Options')->themeUrl . '/img/mr.jpg'; // 若只想要一张默认缩略图请删除本行开头的"//"

    $attach = $widget->attachments(1)->attachment;
    $pattern = '/\<img.*?src\=\"(.*?)\"[^>]*>/i';


if (preg_match_all($pattern, $widget->content, $thumbUrl)) {
         echo $thumbUrl[1][0];
    } else     if ($attach->isImage) {
      echo $attach->url;
    } else {
        echo $random;
    }
}

调用

<?php showThumbnail($this); ?>

获取文章第一张图片做缩略图

function showThumbnail($widget) {
　　$attach = $widget->attachments(1)->attachment;
　　$pattern = '/\<img.*?src\=\"(.*?)\"[^>]*>/i';
　　if (preg_match_all($pattern, $widget->content, $thumbUrl)) {
　　　　echo $thumbUrl[1][0];
　　 else if ($attach->isImage) {
　　　　echo $attach->url;
　　} else {
　　　　echo $random;
　　} 
}

调用

<img src="<?php showThumbnail($this); ?>">

文章阅读量统计

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')) {
       $db->query($db->update('table.contents')->rows(array('views' => (int) $row['views'] + 1))->where('cid = ?', $cid));
    }
    echo $row['views'];
}

调用

<?php get_post_view($this) ?>

热门文章

function getHotComments($limit = 10){
    $db = Typecho_Db::get();
    $result = $db->fetchAll($db->select()->from('table.contents')
        ->where('status = ?','publish')
        ->where('type = ?', 'post')
        ->where('created <= unix_timestamp(now())', 'post') //添加这一句避免未达到时间的文章提前曝光
        ->limit($limit)
        ->order('commentsNum', Typecho_Db::SORT_DESC)
    );
    if($result){
        foreach($result as $val){
            $val = Typecho_Widget::widget('Widget_Abstract_Contents')->push($val);
            $post_title = htmlspecialchars($val['title']);
            $permalink = $val['permalink'];
            echo '<li><a href="'.$permalink.'" title="'.$post_title.'" target="_blank">'.$post_title.'</a></li>';
        }
    }
}

调用

<?php getHotComments('10');?>

随机文章

function getRandomPosts($limit = 10){
    $db = Typecho_Db::get();
    $result = $db->fetchAll($db->select()->from('table.contents')
        ->where('status = ?','publish')
        ->where('type = ?', 'post')
        ->where('created <= unix_timestamp(now())', 'post')
        ->limit($limit)
        ->order('RAND()')
    );
    if($result){
        $i=1;
        foreach($result as $val){
            if($i<=3){
                $var = ' class="red"';
            }else{
                $var = '';
            }
            $val = Typecho_Widget::widget('Widget_Abstract_Contents')->push($val);
            $post_title = htmlspecialchars($val['title']);
            $permalink = $val['permalink'];
            echo '<li><i'.$var.'>'.$i.'</i><a href="'.$permalink.'" title="'.$post_title.'" target="_blank">'.$post_title.'</a></li>';
            $i++;
        }
    }
}

调用

<?php getRandomPosts('10');?>

评论自动排第一

function Autofirst(){
    $db = Typecho_Db::get();
    $query = $db->select()->from('table.comments')->where('authorId = ?','0')->order('coid',Typecho_Db::SORT_DESC)->limit(100);
    $result = $db->fetchAll($query);
    $arrUrl = array();
    $arrAuthor = array();
    foreach ($result as $value) {
        if($value["url"]!==null){
            array_push($arrUrl,$value["url"]);
            array_push($arrAuthor,$value["author"]);
        }
    }
    $su=array_filter(array_merge(array_unique($arrUrl)));
    $sa=array_filter(array_merge(array_unique($arrAuthor)));
    $num=0;
    for($i=0;$i<count(array_unique($su));$i++){
        if($su[$i]!=="" && $num<8){
            $num+=1;
            $db1 = Typecho_Db::get();
            $query1 = $db1->select()->from('table.comments')->where('url = ?',$su[$i])->order('coid',Typecho_Db::SORT_DESC)->limit(100);
            $result1 = $db1->fetchAll($query1);
            $arrAuthor1 = array();
            foreach ($result1 as $value) {
                    array_push($arrAuthor1,$value["author"]);
            }
            echo '<div class="col-lg-3 col-md-3 item"><a href="'.$su[$i].'" rel="external nofollow" class="btn btn-default btn-block overflow" target="_blank">'.$arrAuthor1[0].'</a></div>';
        }
    }
}

调用

<?php Autofirst(100) ?>

原文地址