PHP:TYPECHO:上下篇、微博时间格式化显示

gistfile1.php

    /**
     * 显示下一篇
     * 
     * @access public
     * @param string $default 如果没有下一篇,显示的默认文字
     * @return void
     */
    function theNext($widget, $default = NULL)
    {
        $db = Typecho_Db::get();
        $sql = $db->select()->from('table.contents')
                  ->where('table.contents.created > ?', $widget->created)
                  ->where('table.contents.status = ?', 'publish')
                  ->where('table.contents.type = ?', $widget->type)
                  ->where('table.contents.password IS NULL')
                  ->order('table.contents.created', Typecho_Db::SORT_ASC)
                  ->limit(1);
        $content = $db->fetchRow($sql);
     
        if ($content) {
            $content = $widget->filter($content);
            $link = '<a href="' . $content['permalink'] . '" title="' . $content['title'] . '">' . $content['title'] . '</a><span>' . time_tran($content['created']) . '</span>';
            echo $link;
        } else {
            echo $default;
        }
    }
     
    /**
     * 显示上一篇
     * 
     * @access public
     * @param string $default 如果没有下一篇,显示的默认文字
     * @return void
     */
    function thePrev($widget, $default = NULL)
    {
        $db = Typecho_Db::get();
        $sql = $db->select()->from('table.contents')
                  ->where('table.contents.created < ?', $widget->created)
                  ->where('table.contents.status = ?', 'publish')
                  ->where('table.contents.type = ?', $widget->type)
                  ->where('table.contents.password IS NULL')
                  ->order('table.contents.created', Typecho_Db::SORT_DESC)
                  ->limit(1);
        $content = $db->fetchRow($sql);
     
        if ($content) {
            $content = $widget->filter($content);
            $link = '<a href="' . $content['permalink'] . '" title="' . $content['title'] . '">' . $content['title'] . '</a><span>' . time_tran($content['created']) . '</span>';
            echo $link;
        } else {
            echo $default;
        }
    }
    /** 微博时间格式化显示
     * @param $timestamp，标准时间戳
     */
    function time_tran($timestamp){
        $now_time = abs(time()-$timestamp);
        $gmt_offset = Helper::options()->timezone;//获取typecho的时区偏移值
        $timestamp += $gmt_offset;
        $current_time = mktime() + $gmt_offset;
        $dur = $current_time - $timestamp;
        if($dur < 0){
            return $timestamp;
        }else if($dur < 60){//一分钟内
            return $dur.'秒前';
        }else if($dur < 60 * 60){//一小时内
            return floor($dur/60).'分钟前';
        }else if($dur < 60 * 60 * 24){//一天内
            return floor($dur/3600).'小时前';
        }else if($dur < 60 * 60 * 24 * 30){//30天内
            return floor($dur/86400).'天前';
        }else if($dur < 60 * 60 * 24 * 30 * 3){//3个月内
            return floor($dur/2592000).'个月前';
        }else{
            return gmdate('Y-m-d H:i',$timestamp);
        }
    }