thinkphp模糊查詢

 public  function searchclass($arrset,$pagesize,$offset){



        $keyword = isset($arrset['keyword']) ? htmlentities($arrset['keyword']) : '';
        $order = $arrset['order'];
        $where = '';

        $prefix = C('DB_PREFIX');
        if ($order == 'asc') {
            $order = "{$prefix}recording.rect asc";
        } elseif (($order == 'desc')) {
            $order = "{$prefix}recording.rect desc";
        }
        if ($keyword <> '') {
            $keyword = (string)$keyword;
            $where = "{$prefix}recording.vodname LIKE '%$keyword%'";

        }



        $cls = D('recording');

        $arrs['count'] = $cls->field("{$prefix}recording as rec rec.recid")
            ->order($order)
            ->join("{$prefix}course ON {$prefix}course.courseid = {$prefix}recording.pid")
            ->where($where)
            ->count();

        $arrs['list'] = $cls->field("{$prefix}recording.recid as sid,{$prefix}recording.rect as t,{$prefix}recording.vodname  as title,{$prefix}recording.pid,{$prefix}recording.recid as aid")
            ->order($order)
            ->join("{$prefix}course ON {$prefix}course.courseid = {$prefix}recording.pid")
            ->where($where)
            ->limit($offset . ',' . $pagesize)
            ->select();


        return $arrs;

    }