<?php

? ? $shoesPrice = 49; //鞋子單價

? ? $shoesNum = 1; //鞋子數(shù)量

$shoesmoney = $shoesprice * $shoesnum;

? ??

$shirtPrice = 99; //襯衣單價

$shirtNum = 2; //襯衣數(shù)量

$shirtmoney = $shirtprice * $shirtnum;

$ordermoney = $shoesmoney + ?$shirtmoney;

echo $orderMoney ;

?>

??