<?phprequire_once(‘./Db.php‘);require_once(‘./Controller.php‘);try {	$connect=Db::getInstance()->connect();} catch (Exception $e) {	return Response::show(403,‘数据获取失败‘);}$sql=‘select * from tb_smartphone limit 5‘;$res=mysql_query($sql,$connect);$contents=array();while ($content=mysql_fetch_assoc($res)) {	$contents[]=$content;}if ($contents) {	return Response::show(200,‘数据获取成功‘,$contents);}else{	return Response::show(400,‘数据获取失败‘,$contents);}?>