关联数组的 Laravel 集合

Question

这是我试图转换为集合并提取值的数组。

$arr = [
         "TID" => "81226042",
         "TLineID" => "81226042",
         "Sales" => [
            [
               "TLineID" => "226041"
            ],
            [
               "TLineID" => "226042"
            ],
            [
               "TLineID" => "9042"
            ]
         ]
      ];
//$r = collect($arr)->pluck('Sales');
$r = collect(json_decode(json_encode($arr)))->pluck('Sales');

print_r($r->toArray());

我得到的输出是

Array
(
    [0] =>
    [1] =>
    [2] =>
)

我在这里期待“销售”数组。 我做错了什么？

Answer 1

你做错了

$arr = [
    [
        "TID" => "81226042",
        "TLineID" => "81226042",
        "Sales" => [
            [
                "TLineID" => "226041"
            ],
            [
                "TLineID" => "226042"
            ],
            [
                "TLineID" => "9042"
            ]
        ]
    ],
    [
        "TID" => "81226042",
        "TLineID" => "81226042",
        "Sales" => [
            [
                "TLineID" => "226041"
            ],
            [
                "TLineID" => "226042"
            ],
            [
                "TLineID" => "9042"
            ]
        ]
    ],
];

$sales = collect($arr)->pluck('Sales')->toArray(); 
dd($sales);

我认为这是您努力实现的目标