Laravel Blade - Header & Footer in a Loop

Question

我有这样的数据分类:

Category 1, Product 1, Amount
Category 1, Product 2, Amount
Category 2, Product 3, Amount 

我喜欢把它打印成

Category 1
Product 1    Amount
Product 2    Amount 
....
Total Amount of Category 1 : xxxxx

Category 2
Product 3    Amount 
....
Total Amount of Category 2 : xxxxx

Answer 1

我假设$categories是排序的多维数组，索引是类别、产品和金额。

   @for ($i = 0; $i < count($categories) ; $i++)
         <?php $category_product_toatl=0; ?>
         {{ $categories[$i]['category'] }}
         {{ $categories[$i]['product'] }}     {{ $categories[$i]['amount']}}
         <?php 
              $category_product_total= $category_product_total+ $categories[$i]['amount'];
         ?>
         @for ($j = $i+1; $j < count($categories) ; $j++)
              @if($categories[$i]['category']== $categories[$j]['category'])
                     {{ $categories[$j]['product'] }}     {{ $categories[$j]['amount']}}
                     <?php 
                          $category_product_total= $category_product_total+ $categories[$j]['amount']; 
                     ?>
               @else
                     break;
               @endif
        @endfor
   Total Amount of {{ $category[$i] }} : {{ $category_product_total }}
@endfor