Question

我将此代码用于计算价格getPrecio。

对于价格低于1的产品（例如0.2或0.02），此功能不起作用。

为什么？

这是代码：

function getPrecio($p)
{
    if($p > 0 && $p <= 1) return $p*1.99;
}

它是一个PHP代码。当我说这不起作用时，它不会更正计算出的价格。

试试这个而不是计算

    function getPrecio($p)
{
    $floatPrice = floatval($p);
    if($floatPrice  > 0 && $floatPrice  <= 1) return $floatPrice *1.99;
    //if($p > 0 && $p <= 1) return $p*1.99; 
    elseif($p > 1 && $p <= 3) return $p*1.95;

更新代码

    function getPrecio($p)
{
    $floatPrice = floatval($p);
    $floatCalculatedResult = 0;
    if (between($floatPrice, 0, 1)) {
        $floatCalculatedResult = $floatPrice * 1.99;
    } else if (between($floatPrice, 1, 3)) {
        $floatCalculatedResult = $floatPrice * 1.95;
    }   else if (between($floatPrice, 3, 5)) {
        $floatCalculatedResult = $floatPrice * 1.90;
    }   else if (between($floatPrice, 5, 10)) {
        $floatCalculatedResult = $floatPrice * 1.70;
    }   else if (between($floatPrice, 10, 20)) {
        $floatCalculatedResult = $floatPrice * 1.60;
    }   else if (between($floatPrice, 20, 30)) {
        $floatCalculatedResult = $floatPrice * 1.56;
    }   else if (between($floatPrice, 30, 50)) {
        $floatCalculatedResult = $floatPrice * 1.52;
    }   else if (between($floatPrice, 50, 80)) {
        $floatCalculatedResult = $floatPrice * 1.49;
    }   else if (between($floatPrice, 80, 100)) {
        $floatCalculatedResult = $floatPrice * 1.45;
    }   else if (between($floatPrice, 100, 130)) {
        $floatCalculatedResult = $floatPrice * 1.40;
    }   else if (between($floatPrice, 130, 200)) {
        $floatCalculatedResult = $floatPrice * 1.39;
    }   else if (between($floatPrice, 200, 250)) {
        $floatCalculatedResult = $floatPrice * 1.35;
    }   else if (between($floatPrice,250, 500)) {
        $floatCalculatedResult = $floatPrice * 1.32;
    }   else if (between($floatPrice, 500, 700)) {
        $floatCalculatedResult = $floatPrice * 1.28;
    }   else if (between($floatPrice, 700, 900)) {
        $floatCalculatedResult = $floatPrice * 1.26;
    }   else if (between($floatPrice, 900, 1000)) {
        $floatCalculatedResult = $floatPrice * 1.25;
    }   else if (between($floatPrice, 1000, 10000)) {
        $floatCalculatedResult = $floatPrice * 1.15;
    }
    return $floatCalculatedResult;
}

function between($var, $from, $to)
{
    return ($var > $from && $var <= $to);
}

更新，如果更改字段为0,02到0.02代码的字段工作。但需要正确的代码才能使用0,02

Answer 1

也许$p被转换为int，所以0.2或0.02只是0.尝试使用floatval($p)

function getPrecio($p)
{
    $floatPrice = floatval($p);
    if($floatPrice  > 0 && $floatPrice  <= 1) return $floatPrice *1.99;
}

更新回答

这应该按预期工作。

function getPrecio($p)
{
    $floatPrice = floatval($p);
    $floatCalculatedResult = 0;
    if (between($floatPrice, 0, 1)) {
        $floatCalculatedResult = $floatPrice * 1.99;
    } else if (between($floatPrice, 1, 3)) {
        $floatCalculatedResult = $floatPrice * 1.95;
    }
    return $floatCalculatedResult;
}

function between($var, $from, $to)
{
    return ($var > $from && $var <= $to);
}

您可以继续使用between功能

引入范围

Answer 2

在顶部添加：
$p = floatval(str_replace(',', '.', $p));

这会将0,02更改为0.02。

if（$ p＆gt; 0＆amp;＆amp; $ p＆lt; = 1不能用小数表示

2 个答案: