Question

我在php中编写合适的while循环逻辑时遇到问题，这是我的代码：

$applied_to = "Battery";            # rule applies to this product
$items      = $_GET['items'];       # how many items we have of this product
$forquan    = 3;                     # rule applies to this quantity of product
$autoadd    = "Power Inverter";  # when rule is met add this product.

if ($applied_to == "Battery"){
    print "We Have $items $applied_to<br>";
    print "The rule says we need 1 $autoadd for each 1-$forquan $applied_to<br><hr />";

    $counter = $items;
    while($counter > 0){
        if ($forquan / $items > 1){
            print "we need 1 $autoadd<br>";
        }
        $counter--;
    }
}

现在我想要的是添加一个额外的产品$autoadd如果我们有1-3个电池，2个$autoadd如果我们有3-6等等。

我尝试了很多不同的while循环if语句等组合，但我似乎无法获得完美的循环。

Answer 1

php5 Math function

<?php 

$applied_to = "Battery";            # rule applies to this product
$items      = $_GET['items'];       # how many items we have of this product
$forquan    = 3;                     # rule applies to this quantity of product
$autoadd    = "Power Inverter";  # when rule is met add this product.

if ($applied_to == "Battery"){
    print "We Have $items $applied_to<br>";
    print "The rule says we need 1 $autoadd for each 1-$forquan $applied_to<br><hr />";

    while($items > 0){
 echo abs($forquan/$items); #check abs value
        if (abs($forquan/$items) > 1){
            print "we need 1 $autoadd<br>";
        }
        $items--;
    }
}
?>

Answer 2

您可以简单地计算所需产品的数量，然后迭代该数字：

hash[magazine[i]]++;

然后循环输出是<?php $applied_to = "Battery"; # rule applies to this product $items = $_GET['items']; # how many items we have of this product $forquan = 3; # rule applies to this quantity of product $autoadd = "Power Inverter"; # when rule is met add this product. if ($applied_to == "Battery"){ print "We Have $items $applied_to<br>\n"; print "The rule says we need 1 $autoadd for each 1-$forquan $applied_to<br>\n<hr />\n"; $countAddProducts = ceil($items / $forquan); for ($i=0; $i<$countAddProducts; $i++) { print "we need 1 $autoadd<br>\n"; } }次字符串＆＃34;我们需要1个电源逆变器＆＃34;，其中n是n的向上舍入值除以{{ 1}}。

PHP复杂的while循环逻辑

2 个答案: