排序多維陣列由一個定義的順序

Question

我有這樣的示例性陣列，我想在這個順序中的每個第一級項（66000，66001，66002）分類：New Store第一列表中，Store Relocation在列表中第二和在示例數組中，我沒有包含Underperforming Stores，但這些將是最後一個。那麼那些需要按open日期進行排序我該如何對它們進行排序？

我相信我需要使用usort來完成這個任務，但我並不真正瞭解usort函數，我可以得到這個幫助嗎？

這裏是我的功能，那麼遠，

usort($mainpgArr, function($a, $b){ 

}); 

例原數組：

Array(
    [66000] => Array(
     [January] => Array(
      [status] => New Store 
      [sales] => 100.00 
      [open] => 2013-05-01 
     ) 
     [February] => Array(
      [status] => New Store 
      [sales] => 200.00 
      [open] => 2013-05-01 
     ) 
     [March] => Array(
      [status] => New Store 
      [sales] => 140.00 
      [open] => 2013-05-01 
     ) 
    ) 
    [66001] => Array(
     [January] => Array(
      [status] => Store Relocation 
      [sales] => 3400.00 
      [open] => 2013-07-01 
     ) 
     [February] => Array(
      [status] => Store Relocation 
      [sales] => 1340.00 
      [open] => 2013-07-01 
     ) 
     [March] => Array(
      [status] => Store Relocation 
      [sales] => 1550.00 
      [open] => 2013-07-01 
     ) 
    ) 
    [66002] => Array(
     [January] => Array(
      [status] => New Store 
      [sales] => 1050.00 
      [open] => 2013-01-01 
     ) 
     [February] => Array(
      [status] => New Store 
      [sales] => 1009.00 
      [open] => 2013-01-01 
     ) 
     [March] => Array(
      [status] => New Store 
      [sales] => 1020.00 
      [open] => 2013-01-01 
     ) 
    ) 
) 

例決賽陣列

Array(
    [66002] => Array(
     [January] => Array(
      [status] => New Store 
      [sales] => 1050.00 
      [open] => 2013-01-01 
     ) 
     [February] => Array(
      [status] => New Store 
      [sales] => 1009.00 
      [open] => 2013-01-01 
     ) 
     [March] => Array(
      [status] => New Store 
      [sales] => 1020.00 
      [open] => 2013-01-01 
     ) 
    ) 
    [66000] => Array(
     [January] => Array(
      [status] => New Store 
      [sales] => 100.00 
      [open] => 2013-05-01 
     ) 
     [February] => Array(
      [status] => New Store 
      [sales] => 200.00 
      [open] => 2013-05-01 
     ) 
     [March] => Array(
      [status] => New Store 
      [sales] => 140.00 
      [open] => 2013-05-01 
     ) 
    ) 
    [66001] => Array(
     [January] => Array(
      [status] => Store Relocation 
      [sales] => 3400.00 
      [open] => 2013-07-01 
     ) 
     [February] => Array(
      [status] => Store Relocation 
      [sales] => 1340.00 
      [open] => 2013-07-01 
     ) 
     [March] => Array(
      [status] => Store Relocation 
      [sales] => 1550.00 
      [open] => 2013-07-01 
     ) 
    ) 
) 

Answer 1

所有你需要做的在usort中是如何定義的應訂購2個給定項目。

在你的情況下，如果你的數組數據被整理了一下，通過從月份數據中取出狀態，會更容易。現在，我們不得不假定所有月份都是一樣的。

由於這個假設，我們將使用第一個月的狀態來進行比較。

usort($mainpgArr, function($a, $b){ 
    if ($a[0]['status'] == $b[0]['status']) { 
     // status equal so sort by open date 
     if ($a[0]['open'] == $b[0]['open']) { 
      return 0; 
     } else { 
      return ($a[0]['open'] > $b[0]['open']) ? 1 : -1; 
     } 
    } else { 
     // sorting by status 
     // we can use a simple comparison operation as your desired order happens to be alphabetical 
     return ($a[0]['status'] > $b[0]['status']) ? 1 : -1; 
    } 
}); 

如果密鑰對你很重要，你就需要look at using uasort作爲usort不保留鍵。

Answer 2

你不正確。

這是非常簡單的： http://www.php.net/manual/en/function.ksort.php

ksort($mainpgArr); 

而這一切，鄉親。現在$ mainpgArr按照你想要的方式排序。對多維部分進行排序可以使用asort（）;

---

對不起，誤解了這個問題。好的，你需要用ksort（）對鍵進行排序。然後通過整個事情創建與排序鍵，在ASORT（）索引中的新數組循環..

例如：

ksort($mainpgArr); 
foreach($mainpgArr as $key => $value) { 
    asort($mainpgArr[$key]; 
} 

應該這樣做。對不起，我之前沒有更具體。 （我沒有測試過這個，但應該可以工作）