用 PHP 格式化 Google 图表的数据

Question

我正在从 Google Charts 准备数据，但无法为 Google Charts 创建格式化数据数组。

我有这种格式的对象数组：

[
    {
        "total_amount": 6572.67,
        "o_date": "2020-06-01",
        "storeName": "Store1"
    },
    {
        "total_amount": 314.21,
        "o_date": "2020-06-01",
        "storeName": "Store2"
    },
    {
        "total_amount": 5550.34,
        "o_date": "2020-06-02",
        "storeName": "Store1"
    },
    {
        "total_amount": 461.87,
        "o_date": "2020-06-02",
        "storeName": "Store2"
    },
    {
        "total_amount": 6471.37,
        "o_date": "2020-06-03",
        "storeName": "Store1"
    },
    {
        "total_amount": 547.99,
        "o_date": "2020-06-03",
        "storeName": "Store2"
    },
]

Google Chart 需要这种格式的数据：

['Store', 'Store1', 'Store2', { role: 'annotation' } ],
['2020-06-01', 6572.67, 314.21, ''],
['2020-06-02', 5550.34, 461.87, ''],
['2020-06-03', 6471.37, 547.99, '']

我尝试了不同的方法在 foreach 循环中创建新数组，但无法格式化数组。 谁能建议我正确的方法？ 谢谢。

更新

谢谢大家的cmets和答案。

是的，我正在使用 PHP/Laravel。

要从数据库中获取订单，我的查询是：

$orders =   $orders->select(DB::raw('SUM(orders.quantity) as total_quantity'), DB::raw('SUM(orders.totalAmount) as total_amount'), DB::raw('count(orders.id) as count'), DB::raw("DATE_FORMAT(date, '%Y-%m-%d') as o_date"), 'storeName')->groupBy('o_date', 'storeName')->get()->toArray();

上面的查询返回上面提到的对象数组。比我使用 foreach 循环提取的唯一日期。

foreach($orders as $order)
{
    if(!in_array($order->o_date, $dates))
    {
        array_push($dates, $order->o_date);
    }
}

然后我像这样遍历所有日期

foreach($dates as $date)
{
    $dataArray[] = [$date];

    foreach($orders as $order)
    {
        if($order->storeName == $store && $order->o_date == $date)
        {
            $dataArray[] = [$date, $order->total_amount];

        }
    }
}

上面的代码是错误的。数组中的第一个元素应该是 date，第二个元素应该是 total_amount for store1，第三个元素应该是 total_amount for store2，如下所示

['2020-06-01', 6572.67, 314.21, ''],
['2020-06-02', 5550.34, 461.87, ''],
['2020-06-03', 6471.37, 547.99, '']

注意：- 我正在为Google Stacked Column Chart准备数据

Answer 1

有点杂乱无章，但这应该可以。 $chart 变量将保存您要查找的内容。

    // Assuming data is the "array for object in this format"
    $dates = array_reduce($data, function ($dates, $record) {
        if (!in_array($record['o_date']), $dates) {
            $dates[] = $record['o_date'];
        }

        return $dates;
    }, []);

    $stores = array_reduce($data, function ($stores, $record) {
        if (!in_array($record['storeName'], $stores)) {        
            $stores[] = $record['storeName'];
        }

        return $stores;
    }, []);
    
    $headers = $stores;
    $headers[] = [ 'role' => 'annotation' ])

    $chart = [ $headers ];

    foreach ($dates as $date) {
        $datapoint = [ $date ];

        foreach ($stores as $store) {
            $total = 0;

            foreach ($data as $record) {
                $isStore = $record['storeName'] === $store;
                $isDate = $record['o_date'] === $date;
                if($isStore && $isDate) {
                    $total += (float) $record['total_amount'];
               }
            }

            $datapoint[] = $total;
        }
            
        $chart[] = $datapoint;
    }