博客程序中实现按月份归档

以前使用的方式是将所有的文章日期读出来，然后一笔一笔处理：

function _archives() 

{

    $sql = "select updatetime from tbs_articles";

    $rows = $this->db->getAll($sql);

        

    $archives = array();

    foreach ($rows as $row)

    {

        $month = gmdate("Ym", $row['updatetime'] + $this->_getOption('timeoffset') * 3600);

        if (!array_key_exists($month, $archives))

        {

            $archives[$month] = array('year' => intval(substr($month, 0, 4)), 

                        'month' => intval(substr($month, 4, 2)), 

                        'artnum' => 0);

            $archives[$month]['text'] = $archives[$month]['year'] . '年' . $this->_formatMonth($archives[$month]['month']) . '月';

        }

        $archives[$month]['artnum'] += 1; 

    }

        

    return $archives;

}

 

修改以后的做法：

function _archives() 

{

    $sql = "select date_format(from_unixtime(updatetime + 3600 * " . $this->_getOption('timeoffset'). "), '%Y%m') as ym, count(1) as artnum from tbs_articles group by ym order by ym";

    $rows = $this->db->getAll($sql);

        

    $archives = array();

    foreach ($rows as $row)

    {

        $archives[$row['ym']] = array('year' => intval(substr($row['ym'], 0, 4)), 

                            'month' => intval(substr($row['ym'], 4, 2)), 

                            'artnum' => $row['artnum']);

    }



    return $archives;

}