将以字符串形式显示的指数转换为小数 [英] Convert exponential number presented as string to a decimal

问题描述

假设我有一个字符串，其中包含"7.2769482308e + 01"(此数字来自第三方软件，我无法控制格式).

Let's suppose I have a string that contains "7.2769482308e+01" (this number came from 3rd party software, I cannot control the format).

将其转换为十进制72.769482308的最便宜方法是什么?

What is the cheapest way to convert it into decimal 72.769482308?

我能想到的唯一解决方案是拆分小数+指数部分并使用乘法.但是可能有一些内置的it函数可以执行相同的操作吗?

The only solution I can think of is to split decimal + exponential part and use multiplication. But may be there some built it function to do the same?

注意:伙计们，是的，我阅读了转换php中的指数到小数.那个问题无关紧要，因为它们已经有一个数字，但是我有一个字符串.

NOTE: Guys, yes, I've read Convert exponential to a whole number in PHP and Convert exponential number to decimal in php. And that questions are irrelevant, since they already have a number, but I have a string.

推荐答案

简单转换为浮点值怎么办?

What about a simple cast to a float value ?

$string = "7.2769482308e+01";
$float  = (float) $string;

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