在php數組中放置一個圖層並放置字段也是

Question

我有一個3維數組，我試圖放下數組的基本鍵，以便僅顯示2個更高的鍵/值對。

同時有2個字段，我試圖刪除，但代碼：unset（$ TestArray ['Total']）; unset（$ TestArray ['Count_all']）; 沒有工作。

Qu 1）如何從數組中刪除「Total」和「Count_all」字段？

曲2）如何將圖1中的數組減少到圖2中的數組？ （最好使數組在新的基本級別而不是關聯）。圖2正是我試圖讓原始數組看起來像。

對不起，如果我的措辭不能很好地描述我正在嘗試做什麼。

圖1

Array 
(
    [86] => Array 
     (
      [134] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 36.00 
       ) 

      [130] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 28.00 
       ) 

      [135] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 125.00 
       ) 

      [131] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 67.00 
       ) 

      [133] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 368.80 
       ) 

      [Total] => 624.8 
      [Count_all] => 5 
     ) 

    [67] => Array 
     (
      [130] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 67 
        [Total_Amount] => 129.58 
       ) 

      [131] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 67 
        [Total_Amount] => 230.25 
       ) 

      [133] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 67 
        [Total_Amount] => 76.20 
       ) 

      [132] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 67 
        [Total_Amount] => 436.03 
       ) 

      [Total] => 872.06 
      [Count_all] => 4 
     ) 

    [87] => Array 
     (
      [132] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 87 
        [Total_Amount] => 106.5 

圖2

Array 
(
    [0] => Array 
     (
      [User_ID] => 8 
      [Item_ID] => 86 
      [Total_Amount] => 36.00 
     ) 

    [1] => Array 
     (
      [User_ID] => 8 
      [[Item_ID] => 86 
      [Total_Amount] => 28.00 
     ) 
    [2] => Array 

等

Answer 1

簡單循環throught您的陣列:)

<?php 
$array_input; 
$array_output = array(); 
$blackListKeys = array("Total", "Count_all"); 

foreach ($array_input as $array_input1) { 
    foreach ($array_input1 as $key => $value) { 
     if (in_array($key, $blackListKeys)) continue; 
     else        $array_output[] = $value; 
    } 
} 

Answer 2

你unset($TestArray['Total'])代碼將無法工作，因爲'Total'鍵（和另一部分的Count_all鍵）在一個數組內。使用示例您有：

Array 
(
    [86] => Array 
     (
      [134] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 36.00 
       ) 

      [130] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 28.00 
       ) 

      [135] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 125.00 
       ) 

      [131] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 67.00 
       ) 

      [133] => Array 
       (
        [User_ID] => 8 
        [Item_ID] => 86 
        [Total_Amount] => 368.80 
       ) 

      [Total] => 624.8 
      [Count_all] => 5 
     ) 
); 

數組鍵你需要（假設數組在$TestArray將unset($TestArray[86]['Total'];

對於問題的第二部分，你需要遍歷。第一陣列，並建立從值的新陣列同樣，假設你的第一個數組的例子是$TestArray可以做些沿的行：

$newArray = array(); // this will be the array in the correct format 
foreach ($TestArray as $key => $value) { 
    if (is_array($value)) { 
     $newArray[] = $value; 
    } 
} 

這也有去除達爾和Count_的優勢因爲他們不是數組

Answer 3

一切都值得做的所有指標是值得過這樣做;-)
在PHP7（因爲anonymous class），你可以這樣做：

<?php 
$src = array(
    86 => array(
     134 => array('User_ID'=>8, 'Item_ID'=>86, 'Total_Amount'=>'36.00'), 
     130 => array('User_ID'=>8, 'Item_ID'=>86, 'Total_Amount'=>'28.00'), 
     135 => array('User_ID'=>8, 'Item_ID'=>86, 'Total_Amount'=>'125.00'), 
     131 => array('User_ID'=>8, 'Item_ID'=>86, 'Total_Amount'=>'67.00'), 
     133 => array('User_ID'=>8, 'Item_ID'=>86, 'Total_Amount'=>'368.00'), 
     'Total' => '624.8', 
     'Count_all' => 5 
    ), 

    67 => array(
     134 => array('User_ID'=>8, 'Item_ID'=>67, 'Total_Amount'=>'129.58'), 
     130 => array('User_ID'=>8, 'Item_ID'=>67, 'Total_Amount'=>'230.25'), 
     135 => array('User_ID'=>8, 'Item_ID'=>67, 'Total_Amount'=>'76.20'), 
     131 => array('User_ID'=>8, 'Item_ID'=>67, 'Total_Amount'=>'436.03'), 
     'Total' => '872.06', 
     'Count_all' => 4 
    ) 
); 

$iter = array_reduce(
    $src, 
    function($it, $e) { 
     $it->append( 
      new class(new ArrayIterator($e)) extends FilterIterator { 
       public function accept() { 
        return !in_array($this->key(), array('Total', 'Count_all')); 
       } 
      } 
     ); 
     return $it; 
    }, 
    new AppendIterator 
); 

foreach($iter as $v) { 
    echo join(', ', $v), "\r\n"; 
} 

打印

8, 86, 36.00 
8, 86, 28.00 
8, 86, 125.00 
8, 86, 67.00 
8, 86, 368.00 
8, 67, 129.58 
8, 67, 230.25 
8, 67, 76.20 
8, 67, 436.03 

還看到：
http://docs.php.net/spl
http://docs.php.net/array_reduce