JSON按日期排序

首先，我是这个JSON的完全新手，我寻找解决方案，但似乎我没有找到诀窍。JSON按日期排序

如果数据是这样的：

Array 
(
    [0] => Array 
     (
      [debtor_name] => Name 1 
      [debtor_number] => 0001 
      [statement_date] => 7/31/17 
      [statement_period] => 07/01/2017 - 07/31/2017 
      [due_date] => 8/31/17 
      [statement_number] => 2017-07-0001 
      [courier] => Handcarry 
      [outstanding_bal] => 3,647.53 
      [bal_br_fwd] => 3,647.16 
      [age_cur] => 3,647.53 
      [age_30] => 0 
      [age_60] => 0 
      [age_90] => 0 
      [age_120] => 0 
      [password] => 11291934 
      [email] => [email protected] 
      [counter] => 1 
      [transList] => Array 
       (
        [0] => Array 
         (
          [lineOrder] => 0 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000484236 
          [amt] => 7231.16 
          [desc] => MD-MONTHLY DUES 
          [debit] => 3584 
          [credit] => 0 
         ) 

        [1] => Array 
         (
          [lineOrder] => 1 
          [date] => 7/15/17 
          [dateNum] => 1500048000000 
          [ref] => 0000165008 
          [amt] => 3684 
          [desc] => CM-METROBANK 
          [debit] => 0 
          [credit] => 3647.16 
         ) 

        [2] => Array 
         (
          [lineOrder] => 2 
          [date] => 7/15/17 
          [dateNum] => 1500048000000 
          [ref] => 0000165008 
          [amt] => 3647.53 
          [desc] => 1% Discount 
          [debit] => 0 
          [credit] => 36.47 
         ) 

        [3] => Array 
         (
          [lineOrder] => 3 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000484237 
          [amt] => 7331.16 
          [desc] => MD-VALLEY SENIORS FEE 
          [debit] => 100 
          [credit] => 0 
         ) 

       ) 

     ) 

    [1] => Array 
     (
      [debtor_name] => Name 2 
      [debtor_number] => 2665 
      [statement_date] => 7/31/17 
      [statement_period] => 07/01/2017 - 07/31/2017 
      [due_date] => 8/31/17 
      [statement_number] => 2017-07-2665 
      [courier] => Sure Mail 
      [outstanding_bal] => 18,194.93 
      [bal_br_fwd] => 17,897.63 
      [age_cur] => 5,193.00 
      [age_30] => 6,196.01 
      [age_60] => 4,984.71 
      [age_90] => 1,821.21 
      [age_120] => 0 
      [password] => 05291962 
      [email] => [email protected] 
      [counter] => 5372 
      [transList] => Array 
       (
        [0] => Array 
         (
          [lineOrder] => 4 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000479082 
          [amt] => 18082.63 
          [desc] => F&B CONCESSIONAIRE-F&B 015904 JJ 
          [debit] => 185 
          [credit] => 0 
         ) 

        [1] => Array 
         (
          [lineOrder] => 5 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000485742 
          [amt] => 21666.63 
          [desc] => MD-MONTHLY DUES 
          [debit] => 3584 
          [credit] => 0 
         ) 

        [2] => Array 
         (
          [lineOrder] => 6 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000485743 
          [amt] => 21890.63 
          [desc] => MD-LOCKER RENTAL 
          [debit] => 224 
          [credit] => 0 
         ) 

        [3] => Array 
         (
          [lineOrder] => 7 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000481000 
          [amt] => 21920.63 
          [desc] => F&B CONCESSIONAIRE-F&B 026492 ANIX 
          [debit] => 30 
          [credit] => 0 
         ) 

        [4] => Array 
         (
          [lineOrder] => 8 
          [date] => 7/31/17 
          [dateNum] => 1501430400000 
          [ref] => PF00072305 
          [amt] => 18194.93 
          [desc] => PATRONAGE FEE 
          [debit] => 0 
          [credit] => 448 
         ) 

        [5] => Array 
         (
          [lineOrder] => 9 
          [date] => 7/6/17 
          [dateNum] => 1499270400000 
          [ref] => 0000481002 
          [amt] => 22010.63 
          [desc] => F&B CONCESSIONAIRE-F&B 027375 ANIX 
          [debit] => 15 
          [credit] => 0 
         ) 

        [6] => Array 
         (
          [lineOrder] => 10 
          [date] => 7/8/17 
          [dateNum] => 1499443200000 
          [ref] => 0000479083 
          [amt] => 22268.63 
          [desc] => F&B CONCESSIONAIRE-F&B 016332 JJ 
          [debit] => 258 
          [credit] => 0 
         ) 

        [7] => Array 
         (
          [lineOrder] => 11 
          [date] => 7/8/17 
          [dateNum] => 1499443200000 
          [ref] => 0000164358 
          [amt] => 17372.93 
          [desc] => CM-METROBANK 
          [debit] => 0 
          [credit] => 4895.7 
         ) 

        [8] => Array 
         (
          [lineOrder] => 12 
          [date] => 7/15/17 
          [dateNum] => 1500048000000 
          [ref] => 0000481003 
          [amt] => 17422.93 
          [desc] => F&B CONCESSIONAIRE-F&B 028985 ANIX 
          [debit] => 50 
          [credit] => 0 
         ) 

        [9] => Array 
         (
          [lineOrder] => 13 
          [date] => 7/15/17 
          [dateNum] => 1500048000000 
          [ref] => 0000479084 
          [amt] => 17735.93 
          [desc] => F&B CONCESSIONAIRE-F&B 016716 JJ 
          [debit] => 313 
          [credit] => 0 
         ) 

        [10] => Array 
         (
          [lineOrder] => 14 
          [date] => 7/22/17 
          [dateNum] => 1500652800000 
          [ref] => 0000478834 
          [amt] => 18289.93 
          [desc] => F&B CONCESSIONAIRE-08528DR 
          [debit] => 554 
          [credit] => 0 
         ) 

        [11] => Array 
         (
          [lineOrder] => 15 
          [date] => 7/29/17 
          [dateNum] => 1501257600000 
          [ref] => 0000479085 
          [amt] => 18642.93 
          [desc] => F&B CONCESSIONAIRE-F&B 017434 JJ 
          [debit] => 353 
          [credit] => 0 
         ) 

        [12] => Array 
         (
          [lineOrder] => 16 
          [date] => 7/1/17 
          [dateNum] => 1498838400000 
          [ref] => 0000481001 
          [amt] => 21995.63 
          [desc] => F&B CONCESSIONAIRE-F&B 026713 ANIX 
          [debit] => 75 
          [credit] => 0 
         ) 

       ) 

     ) 

)

所以我得到的数据是这样

$json = json_decode($_POST["list"], true);

我想这行代码，但似乎不工作：

function sort_by_date($a, $b) { 
    $a = strtotime($a['date']); 
    $b = strtotime($b['date']); 
    return ($a < $b) ? -1 : 1; 
} 
usort($json, 'sort_by_date');

我想在transList Array中按日期排序这个JSON数组，但我真的不知道我应该如何调用这个变量在阵列上，任何正确的方向提示非常感谢！

来源

2017-08-17 rolex

'usort（$ json [0 ... n] ['transList']，'sort_by_date'）;' – Spectarion

这是什么$ json [0 ... n]？ – rolex

您需要遍历所有'$ json'项目并对每个项目的'transList'数组进行排序。 'usort（$ json [0] ['transList']，'sort_by_date'）;''usort（$ json [1] ['transList']，'sort_by_date'）;''usort（$ json [2] [' '... – Spectarion

此排序中的每个transList数组：

foreach($json as $k => $v) 
{ 
    usort($v['transList'], function($a, $b){ 
     $d1 = new DateTime($a['date']); 
     $d2 = new DateTime($b['date']); 
     if($d1 == $d2){ 
      return 0; 
     } 
     return ($d1 < $d2) ? -1 : 1; 
    }); 

    // For testing purposes, the array is print to screen to show sorting worked as required 
    echo '<pre>'; 
    print_r($v['transList']); 
    echo '</pre>'; 
}

而只是为了测试目的，我用下面的数据来嘲笑你的数据：

$json = [ 
    [ 
     'transList' => [ 
      [ 
       'id' => 'a', 
       'date' => '7/15/17' 
      ], 
      [ 
       'id' => 'b', 
       'date' => '2/15/17' 
      ], 
      [ 
       'id' => 'c', 
       'date' => '7/15/16' 
      ], 
      [ 
       'id' => 'd', 
       'date' => '4/15/12' 
      ], 
      [ 
       'id' => 'e', 
       'date' => '3/15/16' 
      ] 
     ] 
    ], 
    [ 
     'transList' => [ 
      [ 
       'id' => 'd', 
       'date' => '7/15/17' 
      ], 
      [ 
       'id' => 'b', 
       'date' => '2/15/17' 
      ], 
      [ 
       'id' => 'g', 
       'date' => '7/15/16' 
      ], 
      [ 
       'id' => 'a', 
       'date' => '4/15/12' 
      ], 
      [ 
       'id' => 'x', 
       'date' => '3/15/16' 
      ] 
     ] 
    ] 
];

要回答你的问题有关进一步整理数量如果日期相等：

foreach($json as $k => $v) 
{ 
    usort($v['transList'], function($a, $b){ 
     $d1 = new DateTime($a['date']); 
     $d2 = new DateTime($b['date']); 
     if($d1 == $d2){ 
      if($a['amt'] == $b['amt']){ 
       return 0; 
      } 
      return ($a['amt'] < $b['amt']) ? -1 : 1; 
     } 
     return ($d1 < $d2) ? -1 : 1; 
    }); 

    // For testing purposes, the array is print to screen to show sorting worked as required 
    echo '<pre>'; 
    print_r($v['transList']); 
    echo '</pre>'; 
}

来源

2017-08-17 04:36:18

当数据有相同的日期它交换位置。是否有可能添加条件按日期和安排？或可能日期和ID？ – rolex

查看修订后的答案，现在有日期相等的情况下通过amt进一步排序的示例。 –

完美。非常感谢您的帮助。 – rolex

JSON按日期排序

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