public function add()
{
// 订单号码
$order_number=date('YmdHis').rand(100000, 999999);
// dump($car_num);die;
return $this->fetch();
}
模板代码
<input type="text" name="order_number" value="<?php echo $order_number; ?>" readonly="readonly">
表单的value里面试了<?php echo $order_number; ?>和$$order_number都是提示“未定义变量: order_number”，我写错什么了嘛？
最佳答案
