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我對 php 沒有很熟悉,但如果我的理解沒有錯誤的話,可能要請你重新調整一下這段內容。
private $collect = [
"cost" => [1,2,3,4,5,6,7,8,9,10,11],
"revenue" => [11,12,13,14,15,16,17,18,19,20,21],
"sellprice" => [21,22,23,24,25,26,27,28,29,30,31],
];
如果這個 $collect 是有三個 property 為 int array, 那麼跟原本需求是不相同的。因為需求是 「11 筆帶著描述特徵的資料」,不是「三個int集合剛好各11筆」,兩者語意是不同的。因為你現在的寫法,有可能 cost 11 筆, revenue 可以是 12 筆, sellprice 可以是 3 筆。
如果我的理解沒有錯誤,請重新調整。
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