<?php
include ('area.php');

// 原有exe程序的功能
function calculate($num1, $operator, $num2) {
    switch ($operator) {
        case '+':
            return $num1 + $num2;
        case '-':
            return $num1 - $num2;
        case '*':
      exe转php：加速软件更新与维护的利器       return $num1 * $num2;
        case '/':
            return $num1 / $num2;
        default:
            return "Invalid Operator";
    }
}

$num1 = 10;
$operator = '+';
$num2 = 5;

$result = calculate($num1, $operator, $num2);
echo $result . "
";

// 新添加的计算圆的面积功能
$radius = 5;
$result = calculateCircleArea($radius);
echo "圆的面积为：" . $result;
?>