Rumah > Artikel > pembangunan bahagian belakang > PHP中计算百分比时如何保证各部和为1?
$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);
$percentD = 100-$percentA-$percentB-$percentC;
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);
$a = array(1,2,3,3);$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);