Question

我需要一个建议。我在laravel控制器中得到一个名为$ dettaglioOre的多维数组，我尝试dd（$ dettaglioOre），结果如下：

array array:5  
  0 => array:2 [▼
     "categoria" => 1
     "ore" => "3.00"
]
  1 => array:2 [▼
    "categoria" => 2
    "ore" => "2.00"
]
  2 => array:2 [▼
     "categoria" => 3
     "ore" => "6.00"
]
  3 => array:2 [▼
     "categoria" => 1
     "ore" => "6.00"
]
  4 => array:2 [▼
     "categoria" => 2
     "ore" => "4.00"
]
]

我该如何按小时数对类别进行分组？

像这样：

类别1 = 9小时

类别2 = 6小时

类别3 = 6小时

非常感谢...

Answer 1

您可以使用Collections进行分组：

    $items = [
        [
            "categoria" => 1,
            "ore" => "3.00"
        ],
        [
            "categoria" => 2,
            "ore" => "2.00"
        ],
        [
            "categoria" => 3,
            "ore" => "6.00"
        ],
        [
            "categoria" => 1,
            "ore" => "6.00"
        ],
        [
            "categoria" => 2,
            "ore" => "4.00"
        ]
    ];
    $result = collect($items)
        ->groupBy("categoria")
        ->map(function ($item) {
            $item = collect($item);
            return [
                "categoria" => $item[0]["categoria"],
                "ore_sum" => $item->sum("ore")
            ];
        });

    dd($result->toArray());

这是结果：

array:3 [▼
  1 => array:2 [▼
    "categoria" => 1
    "ore_sum" => 9.0
  ]
  2 => array:2 [▼
    "categoria" => 2
    "ore_sum" => 6.0
  ]
  3 => array:2 [▼
    "categoria" => 3
    "ore_sum" => 6.0
  ]
]

Answer 2

您可以尝试-

$newArray = array();
foreach($array as $data) {
    if(!array_key_exists($data['categoria'], $newArray))
        $newArray[ $data['categoria'] ] = 0;
    $newArray[ $data['categoria'] ] += (double)$data['ore'];
}

Answer 3

$array = [  
  [
     "categoria" => 1,
     "ore" => "3.00"
],
  [
    "categoria" => 2,
    "ore" => "2.00"
],
  [
     "categoria" => 3,
     "ore" => "6.00"
],
  [
     "categoria" => 1,
     "ore" => "6.00"
],
 [
     "categoria" => 2,
     "ore" => "4.00"
]
];

foreach($array as $key => $row){
   $grouped[$row['categoria']] += $row['ore'];
}

echo '<pre>';
print_r($grouped);

Answer 4

最后一件事...

如果字段类别属于一种称为categoriaIntervento的关系（一对多），则在视图中检索结果后，如何显示类别名称而不是ID？

我尝试过

foreach($result as $res)
{
 {{ $res['ore']->categoriaIntervento->name
}

...但不起作用。

谢谢;）

和多维数组

4 个答案: