如何在未达到指定值之前对数组项的值求和？ [英] How to do sum of array item's value until not reached at specified value?
问题描述
我想对数组项的值求和，直到未达到指定值。
I want to do sum of array item's value until not reached at specified value.
让我详细解释。
我希望每个框中的值 20 k.g ，所以下面是我的数组。
I want 20 k.g value in each box , So following is my array.
Array
(
[0] => Array
(
[product_id] => 2
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 5
[weight] => 1.3
[cubic] => 0.00267
[total_weight] => 6.5
[total_cubic] => 0.00267
)
[1] => Array
(
[product_id] => 3
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 6
[weight] => 1.5
[cubic] => 0.00348
[total_weight] => 9
[total_cubic] => 0.00348
)
[2] => Array
(
[product_id] => 8
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 7
[weight] => 1.5
[cubic] => 0.00267
[total_weight] => 10.5
[total_cubic] => 0.00267
)
)
您可以在上面的数组中看到有3个字段数量，重量& total_weight 。
You can see in above array there are 3 fields quantity,weight & total_weight.
因此在循环期间，我想将 20 的值设置为每个项目的重量总和。我们可以取数量&
So during loop i want to set 20 value to single box from sum of each items weight. we can take quantity & weight from any three items for set 20 value for each.
So output will be..
Array (
[0] => Array('box_item'=>20)
[1] => Array('box_item'=>6)
)
让我解释一下输出数组。.
Let me explain output array..
您可以看到第一个数组 6.5 &第二个 9 &第三个 10.5
You can see total_weigh of First array 6.5 & second 9 & third 10.5
我想为每个值设置 20 框，因此计算将为
I want to set 20 value per box, So calculation will be
6.5 + 9 = 15.5，然后从第三个数组中添加 4.5 $ c> 1.5 * 3 = 4.5
6.5 + 9 = 15.5 , then add 4.5 from third array like 1.5*3 = 4.5
第一个框用于 20 &剩余重量值为 6 ，因此将其设置为第二个盒子。
So first box is for 20 & remain weight value is 6 so it'll be set is for second box.
注意：目前，我仅以3件物品为例，但是这里会有更多物品，我必须为每件物品的重量设置20公斤的价值。
Note: Currently i have taken only 3 items for example purpose but there will be more items here and I have to set 20 k.g value for each for from weight of items value.
我使用了以下代码，但没有帮助。此代码未提供正确的输出
I have used following code but not helpful. This code is not given proper output
// First calculate the total
foreach ($main as $key => $package) {
$packageInfo[$key]['total_weight'] = $package['quantity'] * $package['weight'];
}
// Then check count the packages ?
$packages = [];
$packageTotalWeight = 0;
$packageItemWeight = 0;
$cubicTotal = 0;
foreach ($packageInfo as $key => $package) {
if(($packageTotalWeight + $package['total_weight']) > 20){
$packages[]['final_total'] = $packageTotalWeight;
$packageTotalWeight = $package['total_weight'];
} else {
$packageTotalWeight += $package['total_weight'];
}
}
推荐答案
此功能将为您包装盒子，依次从每种产品中选择，直到盒子达到最大盒子重量，然后开始新的盒子：
This function will "pack" the boxes for you, selecting from each product in turn until a box reaches the maximum box weight, then starting a new one:
function pack_boxes($products, $box_weight) {
$boxes = array();
$this_box_weight = 0;
$box_number = 0;
foreach ($products as $product) {
// will all this product fit?
if ($product['total_weight'] < $box_weight - $this_box_weight) {
// yes - add this product to the box
$boxes[$box_number][] = $product;
$this_box_weight += $product['total_weight'];
$boxes[$box_number]['box_weight'] = $this_box_weight;
}
else {
// no - add the part that will fit to this box
$num_products = floor(($box_weight - $this_box_weight) / $product['weight']);
$balance = $product['quantity'] - $num_products;
$product['quantity'] = $num_products;
$product['total_weight'] = $num_products * $product['weight'];
$boxes[$box_number][] = $product;
$boxes[$box_number]['box_weight'] = $this_box_weight + $num_products * $product['weight'];
// add the balance to a new box
$box_number++;
$product['quantity'] = $balance;
$this_box_weight = $product['total_weight'] = $balance * $product['weight'];
$boxes[$box_number][] = $product;
$boxes[$box_number]['box_weight'] = $this_box_weight;
}
}
return $boxes;
}
每个框中的总重量以 $表示box [*] ['box_weight'] 。
样品用量（12是每个盒子的最大重量）以获取每个盒子的盒子重量：
Sample usage (12 is maximum weight per box) to get the box weights per box:
$boxes = pack_boxes($products, 12);
print_r(array_column($boxes, 'box_weight'));
输出（仅包装箱重量）：
Output (box weights only):
Array
(
[0] => 11
[1] => 12
[2] => 3
)
或完整数据结果：
print_r($boxes);
输出
Array
(
[0] => Array
(
[0] => Array
(
[product_id] => 2
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 5
[weight] => 1.3
[cubic] => 0.00267
[total_weight] => 6.5
[total_cubic] => 0.00267
)
[box_weight] => 11
[1] => Array
(
[product_id] => 3
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 3
[weight] => 1.5
[cubic] => 0.00348
[total_weight] => 4.5
[total_cubic] => 0.00348
)
)
[1] => Array
(
[0] => Array
(
[product_id] => 3
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 3
[weight] => 1.5
[cubic] => 0.00348
[total_weight] => 4.5
[total_cubic] => 0.00348
)
[box_weight] => 12
[1] => Array
(
[product_id] => 8
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 5
[weight] => 1.5
[cubic] => 0.00267
[total_weight] => 7.5
[total_cubic] => 0.00267
)
)
[2] => Array
(
[0] => Array
(
[product_id] => 8
[customer_id] => 1820
[order_id] => M-AAH-959
[quantity] => 2
[weight] => 1.5
[cubic] => 0.00267
[total_weight] => 3
[total_cubic] => 0.00267
)
[box_weight] => 3
)
)
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