为什么我的PHP代码返回inf？ [英] Why does my php code return inf?

问题描述

我有一个数学问题，我试图计算一组值的总和...当我尝试运行我的计算时，它只返回INF而不是数字...

I have a math problem where I am trying to calculate the total combination of values in a set... when I try and run my calculation it just returns INF instead of a number...

$tally = 1;
foreach ($output as $key => $er) {
  $tally = $tally *(ord(strtolower($er)) - 96);
}
echo $tally;

推荐答案

如果您尝试回显一个数字并且不满意PHP给您 INF，这是因为PHP认为该数字是无限的，或者太大而无法存储在其内存中。

If when you try and echo a number and isntead PHP gives you "INF", it is because PHP thinks that the number is infinite, or too large to be stored in its memory.

您可以通过<$ c来确认$ c> echo is_infinite（$ tally）;

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