PHP ARRAY排序在第三級

Question

您好，我實際上是想在第三級用不同的鍵排序數組。

以下是樣本數組輸入。

Array 
(
    [19067] => Array 
     (
      [Morrisville, PA] => 5.02 
     ) 

    [18977] => Array 
     (
      [Washington Crossing, PA] => 6.63 
     ) 

    [08695] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08690] => Array 
     (
      [Trenton, NJ] => 1 
     ) 

    [08666] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08650] => Array 
     (
      [Trenton, NJ] => 0 
     ) 

    [08648] => Array 
     (
      [Lawrence Township, NJ] => 2.88 
     ) 

    [08647] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08646] => Array 
     (
      [Trenton, NJ] => 2 
     ) 

) 

任何機構可以幫我在第三級以上數組進行排序

預期結果想：

輸出：

Array 
(
    [08650] => Array 
     (
      [Trenton, NJ] => 0 
     ) 

    [08690] => Array 
     (
      [Trenton, NJ] => 1 
     ) 

    [08646] => Array 
     (
      [Trenton, NJ] => 2 
     ) 

    [08666] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08695] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08647] => Array 
     (
      [Trenton, NJ] => 2.84 
     ) 

    [08648] => Array 
     (
      [Lawrence Township, NJ] => 2.88 
     ) 

    [19067] => Array 
     (
      [Morrisville, PA] => 5.02 
     ) 

    [18977] => Array 
     (
      [Washington Crossing, PA] => 6.63 
     ) 


) 

在此先感謝..

Answer 1

uasort($array, function (array $a, array $b) { 
    return current($a) - current($b); 
}); 

請注意評論：小於1.0的值將按照相同的順序排序。您可能需要執行(current($a) - current($b)) * 100或以其他方式舍入值，具體取決於您期望的值範圍。