我怎样才能从函数内部获得价值？

Question

是否有可能在函数内部获取这些值并使用函数之外的函数是我的代码:

   <?
    function expenditure () {
    $totalexpenditure = $sum1 + $sum2;
    }
    function income () {
    totalincome = $sum1 + $sum2;
    }
    $profit = $totalincome - $totalexpenditure;
   ?>

现在我的问题是如何才能获得totalincome和toatalexpenditure的价值？我正在学习php alos新的PHP所以请帮助我们.

Answer 1

<?
function expenditure ($sum1, $sum2) {
    $totalexpenditure = $sum1 + $sum2;
    return $totalexpenditure;
}

function income ($sum1, $sum2) {
    $totalincome = $sum1 + $sum2;
    return $totalincome;
}

$profit = income ($sum1, $sum2) - expenditure($sum1, $sum2) ;
?>

退货声明