foreach循环查询

//客户端考勤
    public function doPageKaoqin()
    {
        global $_GPC, $_W;
        $errno = 0;
        $message = 'success';
        $starttime = $_GPC['starttime'];//开始时间
        $endtime = $_GPC['endtime'];//结束时间
        $list = pdo_fetchall("SELECT a.id,a.course_id, a.section_id, b.name course_name FROM " . tablename('wx_school_my_hours') . " a LEFT JOIN "
            . tablename('wx_school_tcourse') . " b ON a.course_id=b.id WHERE a.date >= '$starttime' and a.date<= '$endtime' ORDER BY a.date DESC");

        $total= 0;
        $total_que = 0;
        foreach ($list as &$value) {
            $value['total_stu'] = pdo_fetchcolumn("SELECT COUNT(1) FROM " . tablename('wx_school_sign_log') . " WHERE hours_id = {$value['id']}");
            $total += $value['total_stu'];
            $value['que_stu'] = pdo_fetchcolumn("SELECT COUNT(1) FROM " . tablename('wx_school_sign_log') . " WHERE hours_id = {$value['id']} AND status=2");
            $total_que += $value['que_stu'];
        }
        return $this->result($errno, $message, [
            'config'=>['total'=>$total, 'total_que'=>$total_que],
            'list'=>$list
        ]);
    }

foreach 循环查询2

public function doPageWorkCompletion()
    {
        global $_GPC, $_W;
        $errno = 0;
        $message = 'success';

        $data = pdo_fetchall("SELECT id,name,work_starttime,work_endtime FROM".tablename('wx_school_kcbiao')."WHERE work IS NOT NULL");

        foreach ($data as $k=>&$v){
            $data[$k]['work_starttime'] = date("m月d日 H:i",$data[$k]['work_starttime']);
            $data[$k]['work_endtime'] = date("m月d日 H:i",$data[$k]['work_endtime']);
            $data[$k]['wancheng'] = pdo_fetchcolumn("SELECT count(*) FROM". tablename('wx_school_homework')."WHERE section_id = {$v['id']} and status = 1");
            $data[$k]['total'] = pdo_fetchcolumn("SELECT count(*) FROM". tablename('wx_school_homework')."WHERE section_id = {$v['id']}");

        }

        return $this->result($errno, $message, $data);

    }