php 如何计算一个数字的百分比?
声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow
原文地址: http://stackoverflow.com/questions/10201027/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示:将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间:2020-08-24 21:38:10 来源:igfitidea点击:
How do I calculate the percentage of a number?
提问by John Smeuth
I would like to calculate, in PHP, the percentage of a number. For example:
我想在 PHP 中计算一个数字的百分比。例如:
$percentage = 50;
$totalWidth = 350;
For this example, 50% of 350 = 175
对于此示例,350 的 50% = 175
How can I do that?
我怎样才能做到这一点?
回答by pogeybait
$percentage = 50;
$totalWidth = 350;
$new_width = ($percentage / 100) * $totalWidth;
回答by hkf
Divide $percentageby 100 and multiply to $totalWidth. Simple maths.
除以$percentage100 并乘以$totalWidth。简单的数学。

