thinkphp 模糊查詢組合

$kiy=D('spt');
$data['checkit']  = 0;
$data['pt_status']  = 1;
$data['_string']='(pt_gzh like "%'.$findtext.'%")OR(pt_wxh like "%'.$findtext.'%")';
$jhaf=$kiy->where($data)->select();
$this->assign('jhaf',$jhaf);
$this->view('Terrace/ter_ptmmlb');