Question

任何人都可以编写PHP脚本作为计算器来计算增加和减少的百分比吗？

http://www.marshu.com/articles/calculate-percentage-increase-decrease-percent-calculator.php

谢谢。

Answer 1

如果您打开该页面的来源，您将找到以下内容：

function PercentIncrease(form) {
   var num1 = form.num1.value;
   var num2 = form.num2.value;
   return ((num2 - num1) / num1 * 100 + "%");
}

如果您遇到PHP语法问题，请告诉我们。

更新：显然你有，所以：

function PercentIncrease($num1, $num2) {
    return (($num2 - $num1) / $num1 * 100 . "%");
}

$n1 = 10;
$n2 = 200;
echo PercentIncrease($n1, $n2); //output 1900%
echo PercentIncrease($n2, $n1); //output -95%

Answer 2

您可以制作如下功能：

select ResourceID
from TableName
where ResourceID not in (SELECT ResourceID
                         from TableName 
                         group by ResourceID, IsActive
                         having IsActive = 1)

计算增加和减少的百分比

2 个答案: