php - 在 if 语句中将运输和处理金额添加到总计中

Question

我正在尝试$grandtotal在if声明中添加运输和处理金额：

Order #: <? echo $ORDERID?><br />
<br />
Pick-Up Date: <? echo $MYPICKUP?><br />
Comments: <? echo $COMMENTS?><br /><br />  
<?php
$paypal = 'paypal';
$check = 'check';

if ($PAYMETHOD == $paypal)
{
    echo "Shipping & Handling = ".($GRANDTOTAL * .045);
}
    elseif ($PAYMETHOD == $check)
{
    echo "Shipping & Handling = 0";
}
?><br />

Grand Total: $<? echo $GRANDTOTAL?><br />
Payment Method: <? echo $PAYMETHOD?></span><span class="TextB"><br />

我是否需要定义更多变量来执行此操作？

Answer 1

您应该在显示增加总计的运费和手续费后添加一行：

if ($PAYMETHOD == $paypal)
{
    echo "Shipping & Handling = ".($GRANDTOTAL * .045);
    $GRANDTOTAL = $GRANDTOTAL * 1.045;
}
    elseif ($PAYMETHOD == $check)
{
    echo "Shipping & Handling = 0";
}