php - 将数组值与同一数组中的其他值进行比较

Question

我想要实现的是，它将遍历数组。然后它会检查数组中的项目是否在三个点上相同:product_id、尺寸值和颜色值。 我想创建一个列出项目的新数组，我唯一不想要的是重复的值。我希望如果重复值在这三个点上相同，则数量将一起计算。就像我有 3 件相同的产品 ID、相同的尺寸和相同的颜色，并且我在新数组中订购了 3 件的三件商品，这只是站立 1 次，数量将为 9。所以我的新产品中不会有重复的值数组。

当前循环

foreach($orders as $key => $order){
            foreach($order['orderProducts'] as $key => $value){
                echo '<pre>';
                print_r($value['attributes']);
                echo '</pre>';
            }
 }

结果如下数组

Array
(
    [id] => 2
    [product_id] => 4
    [order_id] => 2
    [name] => swag3
    [description] => haha
    [price] => 19.95
    [proceeds] => 10.00
    [quantity] => 2
    [attributes] => [{"id":1,"name":"Size","value":"XS","active":1},{"id":8,"name":"Color","value":"Wit","active":1}]
)
Array
(
    [id] => 3
    [product_id] => 3
    [order_id] => 3
    [name] => swag2
    [description] => lol
    [price] => 19.95
    [proceeds] => 10.00
    [quantity] => 2
    [attributes] => [{"id":2,"name":"Size","value":"S","active":1},{"id":7,"name":"Color","value":"Zwart","active":1}]
)
Array
(
    [id] => 4
    [product_id] => 3
    [order_id] => 4
    [name] => swag2
    [description] => lol
    [price] => 19.95
    [proceeds] => 10.00
    [quantity] => 1
    [attributes] => [{"id":2,"name":"Size","value":"S","active":1},{"id":7,"name":"Color","value":"Zwart","active":1}]
)

我正在寻找的东西..

Array
(
    [id] => 2
    [product_id] => 4
    [order_id] => 2
    [name] => swag3
    [description] => haha
    [price] => 19.95
    [proceeds] => 10.00
    [quantity] => 2
    [attributes] => [{"id":1,"name":"Size","value":"XS","active":1},{"id":8,"name":"Color","value":"Wit","active":1}]
)
Array
(
    [id] => 3
    [product_id] => 3
    [order_id] => 3
    [name] => swag2
    [description] => lol
    [price] => 19.95
    [proceeds] => 10.00
    [quantity] => 3
    [attributes] => [{"id":2,"name":"Size","value":"S","active":1},{"id":7,"name":"Color","value":"Zwart","active":1}]
)

解决方案 请注意，它的前端是 blade php。

后端

$order // is the array with products
$items = [];
foreach($orders as $key => $order){
    foreach($order['orderProducts'] as $op){
        $i = [
        'product'=> Product::findOrFail($op->product_id)->toArray(),
        'attributes' =>$op->attributes,
        'quantity'=>$op->quantity
        ];
        $matchedResult = false;
        $count = count($items);
        for($a = 0; $a < $count; $a++){
            // Items with the same product_id in the $item array
            if($items[$a]['product']['id'] == $i['product']['id']){
                //check if the attributes are also the same
                if($items[$a]['attributes'] === $i['attributes']){
                    // The attributes ar ethe same so up the quantity
                    $items[$a]['quantity'] += $i['quantity'];
                    $matchedResult = true;
                    continue; // If its right there are no other matches
                }
            }
        }
        if($matchedResult === false){
            // only push item if there is not a match.
            $items[] = $i;
        }
    }
}

前端

<div class="table-responsive">
  <table class="table table-striped">
    <thead>
      <tr>
        <th>Product</th>
        <th>quantity</th>
      </tr>
    </thead>
    <tbody>
    @foreach($items as $item)
    <tr>
      <td>{{$item['product']['name']}}
      @if(count($item['attributes']) > 0) <small>
      @foreach($item['attributes'] as $att)
      {{$att['name']}} - {{$att['value']}}
      @endforeach
      </small>
      @endif</td>
      <td>{{$item['quantity']}}</td>
    </tr>
    @endforeach
    </tbody>
  </table>
</div>

Answer 1

您可以在不使用嵌套循环的情况下实现您的目标。您可以使用 product_id、尺寸和颜色参数的哈希函数，并将该值用作新的数组键，如下所示:

$orders = // original array;
$newOrders = [];     // new array

foreach($orders as $order) {
    $pi = $order["product_id"];                // get product_id
    $attr = json_decode($order["attributes"]); // get attributes:
    $size = $attr[0]->value;                   // get size value
    $color = $attr[1]->Color;                  // get color

    $hash = sprintf("%s.%s.%s", $pi, $size, $color); // Calculate hash

    if ($newOrders[$hash]) {
        $newOrders[$hash].quantity++; // If hash is already present then just increase quantity
    } else {
        // Otherwise add new order
        $newOrders[$hash] = [
            "order" => $order,
            "quantity" => 1
        ];
    }
}