奇怪的 php 错误

发布于 2024-08-16 21:26:13 字数 920 浏览 2 评论 0原文

我有以下代码：

    var_dump($cumulitive);
    $y_axis_max = max($cumulitive)*1.3;
    var_dump($y_axis_max);

它输出以下内容：

array(16) {
  [0]=>
  int(0)
  [1]=>
  int(0)
  [2]=>
  int(0)
  [3]=>
  int(0)
  [4]=>
  int(0)
  [5]=>
  int(0)
  [6]=>
  int(0)
  [7]=>
  int(0)
  [8]=>
  int(0)
  [9]=>
  int(0)
  [10]=>
  int(0)
  [11]=>
  int(4)
  [12]=>
  int(4)
  [13]=>
  int(4)
  [14]=>
  int(9)
  [15]=>
  int(9)
}
float(NAN)

如您所见， $y_axis_max 给出 NAN。所以我尝试这样做：我重新启动 WampServer。现在可以了。我刷新浏览器。再次工作。再次刷新浏览器。现在它不起作用了，如果不重新启动 Apache，我就无法让它再次工作。从第三个请求开始，它停止工作。

它曾经工作得很好。然后我改变了一些事情。具体来说，我修改了我的应用程序以在几个地方使用 DateTime 类。但这不应该使这个奇怪的错误发生。关于如何调试这个有什么想法吗？

如果我连续两次调用 $y_axis_max = .. 代码行，那么我会得到 $y_axis_max：

float(@.7)

这到底是什么？

编辑：似乎较早调用 DateTime::diff 会导致错误。有什么解决办法吗？

原文

I have the following code:

    var_dump($cumulitive);
    $y_axis_max = max($cumulitive)*1.3;
    var_dump($y_axis_max);

It outputs the following:

array(16) {
  [0]=>
  int(0)
  [1]=>
  int(0)
  [2]=>
  int(0)
  [3]=>
  int(0)
  [4]=>
  int(0)
  [5]=>
  int(0)
  [6]=>
  int(0)
  [7]=>
  int(0)
  [8]=>
  int(0)
  [9]=>
  int(0)
  [10]=>
  int(0)
  [11]=>
  int(4)
  [12]=>
  int(4)
  [13]=>
  int(4)
  [14]=>
  int(9)
  [15]=>
  int(9)
}
float(NAN)

As you can see, $y_axis_max is giving NAN. So I try this: I restart WampServer. It works now. I refresh the browser. Works again. refresh the browser again. Now it doesn't work, and I can't get it to work again without restarting Apache. From the 3rd request on it stops working.

It USED to work just fine. Then I changed some things. Specifically, I modified my app to use the DateTime class in a few places. But that shouldn't make this strange error occur. Any ideas on how to debug this?

If I call the $y_axis_max = .. line of code twice in a row, then I get this for $y_axis_max: