如何按阈值价格对样本数组进行分组，样本名称作为子数组键？

Question

我有一个产品样本数组，我试图按阈值价格进行分组，其余样本将由样本数组访问。

这就是我想要实现的目标：

[
  {
    "threshold": 20.00,
    "samples": [
      {
        ...
      }
    ]
  },
  {
    "threshold": 100.00,
    "samples": [
      {
        ...
      }
    ]
  }
]

编辑：以及我正在使用的 fetchSamples 数据（在它作为输入输入到 foreach 之前）：例如var_dump($sortedProducts)

此代码按预期工作正常。

array (size=7)
  0 => 
    array (size=9)
     "sampleid"=> "1234" (length=4)
     "productid"=> "11111" (length=5)
     "threshold"=> "20.00" (length=5)
     "stock"=> "345" (length=4)
     "product"=> "Beauty sample 1" (length=16)
        
  2 => 
    array (size=9)
     "sampleid"=> "5678" (length=4)
     "productid"=> "22222" (length=5)
     "threshold"=> "20.00" (length=5)
     "stock"=> "2449" (length=4)
     "product"=> "Beauty sample 2" (length=16)
        
   3 =>
    array (size=9)
     "sampleid"=> "999" (length=4)
     "productid"=> "33333" (length=5)
     "threshold"=> "100.00" (length=6)
     "stock"=> "345" (length=4)
     "product"=> "Beauty sample 3" (length=16)

还有我的 PHP 代码，分组发生的地方。 这是在循环中采用 $sortedProducts 并使用 $sortedProducts 输出此修改后的数据的尝试：

  $sortedProducts = array();

        foreach($fetchSamples as $samplekey => $sample)
        {

           $sortedProducts[$sample["threshold"]][] = $sample;
        }
       

然而，当我在 foreach 循环之后转储 $sortedProducts 时，我最接近这个解决方案：（例如dump($sortedProducts) ）；

Main issue is trying to get the results grouped by the threshold and trying to having it as the fields with an sub array of samples containing threshold identified by same key. 

[
    {
        "20.00": [
            {
                "sampleid": "1234",
                "productid": "111111",
                "threshold": "20.00",
                "stock": "345",
                "product": "Beauty sample 1",
            },
           
            {
                "sampleid": "5678",
                "productid": "222222",
                "threshold": "20.00",
                "stocklevel": "2449",
                "product": "Beauty sample 2",
            }
        ],
        "100.00": [
            {
                "sampleid": "9999",
                "productid": "33333",
                "threshold": "100.00",
                "stock": "345",
                "product": "Beauty sample 3",
            }
        ]
    }
]

Answer 1

是你要找的吗？

示例代码

$arrs = array(
'1' => array(
     "sampleid"=> "1234",
     "productid"=> "11111",
     "threshold"=> "20.00",
     "stock"=> "345",
     "product"=> "Beauty sample 1"
    ),
'2' => array(
    "sampleid"=> "5678",
    "productid"=> "22222",
    "threshold"=> "20.00",
    "stock"=> "2449",
    "product"=> "Beauty sample 2"
    ),
'3' => array(
    "sampleid"=> "999",
    "productid"=> "33333",
    "threshold"=> "100.00",
    "stock"=> "345",
    "product"=> "Beauty sample 3"
    )
);

$data = array();

foreach($arrs as $key => $value){
    $data[$value['threshold']]['threshold'] = $value['threshold'];
        $data[$value['threshold']]['samples'][] = array(
                'productid' => $value['productid'],
                'stock'     => $value['stock']
            );
}

print_r($data);

输出：

Array
(
[20.00] => Array
    (
        [threshold] => 20.00
        [samples] => Array
            (
                [0] => Array
                    (
                        [productid] => 11111
                        [stock] => 345
                    )

                [1] => Array
                    (
                        [productid] => 22222
                        [stock] => 2449
                    )

            )

    )

[100.00] => Array
    (
        [threshold] => 100.00
        [samples] => Array
            (
                [0] => Array
                    (
                        [productid] => 33333
                        [stock] => 345
                    )

            )

    )

)