PHP中计算百分比时如何保证各部和为1?

WBOY
Release: 2016-06-23 14:10:33
Original
1390 people have browsed it

$total = $a+$b+$c+$d;$percentA = ceil($a*100.0/$total);$percentB = ceil($b*100.0/$total);$percentC = ceil($c*100.0/$total);$percentD = ceil($d*100.0/$total);
Copy after login


上面的代码似乎无法确保最后的总和是100%

$percentD = 100-$percentA-$percentB-$percentC;
Copy after login

除了这种方法,有其他方法吗?


回复讨论(解决方案)

不要小数吗?
另外你这没有四舍五入,是需要的吗?
$percentA = round($a*100.0/$total);

不要小数吗?
另外你这没有四舍五入,是需要的吗?
$percentA = round($a*100.0/$total);

是要四舍五入的

$a = array(1,2,3,3);$total = array_sum($a);array_walk($a, function(&$item, $key, $prefix) { $item = round($item*100/$prefix); }, $total);if($d = (100 - array_sum($a))) $a[rand(0, count($a)-1)] += $d;print_r($a);
Copy after login
Copy after login

$a = array(1,2,3,3);$total = array_sum($a);array_walk($a, function(&$item, $key, $prefix) { $item = round($item*100/$prefix); }, $total);if($d = (100 - array_sum($a))) $a[rand(0, count($a)-1)] += $d;print_r($a);
Copy after login
Copy after login


多谢

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn:Public welfare online PHP training,Help PHP learners grow quickly!