如何在PHP中的關聯數組中插入新的鍵值對？

-1

我命名$classes_data關聯數組如下：如何在PHP中的關聯數組中插入新的鍵值對？

Array 
(
    [2] => Array 
     (
      [class_id] => 2 
      [class_name] => II 
      [subjects] => Array 
       (
        [0] => 11 Engllish 
       ) 

     ) 

    [3] => Array 
     (
      [class_id] => 3 
      [class_name] => III 
      [subjects] => Array 
       (
        [0] => Hidi 
        [1] => 11 Maths 
        [2] => 11 Science 
        [3] => 11 Engllish 
       ) 

     ) 

    [4] => Array 
     (
      [class_id] => 4 
      [class_name] => IV 
      [subjects] => Array 
       (
        [0] => Physics 
       ) 

     ) 

    [6] => Array 
     (
      [class_id] => 6 
      [class_name] => VI 
      [subjects] => Array 
       (
        [0] => Mathematics 
        [1] => dfadadadsagfasrsarasrarBiology 
       ) 

     ) 

    [7] => Array 
     (
      [class_id] => 7 
      [class_name] => VII 
      [subjects] => Array 
       (
        [0] => Physics 
        [1] => Chemistry11 
        [2] => 11 Science 
       ) 

     ) 

    [8] => Array 
     (
      [class_id] => 8 
      [class_name] => VIII 
      [subjects] => Array 
       (
        [0] => Hidi 
        [1] => 11 Engllish 
       ) 

     ) 

    [9] => Array 
     (
      [class_id] => 9 
      [class_name] => IX 
      [subjects] => Array 
       (
        [0] => Mathematics 
        [1] => Hidi 
        [2] => 11 Science 
       ) 

     ) 

)

數組的鍵（即2,3,4,6,7,8,9,10-）是在這樣的方式，而不是0,1 ，2,3,4,5,6因爲我使用了一個函數來重新排列這些鍵。

現在我想要做的是插入一個新的密鑰class_checked並將其初始值設置爲0（即class_checked =>"0"）。

我嘗試了很多技巧，但無法獲得所需的陣列格式。任何人都可以幫助我獲得理想的數組？提前致謝。

爲了您的信息陣列$classes_data所需的陣列格式如下：

Array 
    (
    [2] => Array 
     (
      [class_id] => 2 
      [class_name] => II 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => 11 Engllish 
       ) 

     ) 

    [3] => Array 
     (
      [class_id] => 3 
      [class_name] => III 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Hidi 
        [1] => 11 Maths 
        [2] => 11 Science 
        [3] => 11 Engllish 
       ) 

     ) 

    [4] => Array 
     (
      [class_id] => 4 
      [class_name] => IV 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Physics 
       ) 

     ) 

    [6] => Array 
     (
      [class_id] => 6 
      [class_name] => VI 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Mathematics 
        [1] => dfadadadsagfasrsarasrarBiology 
       ) 

     ) 

    [7] => Array 
     (
      [class_id] => 7 
      [class_name] => VII 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Physics 
        [1] => Chemistry11 
        [2] => 11 Science 
       ) 

     ) 

    [8] => Array 
     (
      [class_id] => 8 
      [class_name] => VIII 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Hidi 
        [1] => 11 Engllish 
       ) 

     ) 

    [9] => Array 
     (
      [class_id] => 9 
      [class_name] => IX 
      [class_checked] => 0 
      [subjects] => Array 
       (
        [0] => Mathematics 
        [1] => Hidi 
        [2] => 11 Science 
       ) 

     ) 

)

來源

2013-05-07 PHPLover

嘗試：

foreach($classes_data as $key=>$value) { 
    $classes_data[$key]['class_checked'] = 0; 
}

來源

2013-05-07 06:44:00

謝謝Dharmesh Patel。這是我真正想要的。你的代碼對我來說真的很神奇。再次感謝您的寶貴幫助。 – PHPLover 2013-05-07 06:46:24

$array = array_map(function (array $i) { return $i + array('class_checked' => 0); }, $array);

或者：

foreach ($array as &$i) { 
    $i['class_checked'] = 0; 
} 
unset($i);

來源

2013-05-07 06:38:48 deceze

感謝deceze。你的魔法對我來說工作得很好。根據我的要求，我獲得了所需的陣列。再次感謝您的大力幫助。 – PHPLover 2013-05-07 06:43:29

給您最初的$classes_data你可以這樣做：

foreach($classes_data as &$class) { 
    $class['class_checked'] = 0; 
}

現在陣列應該像你想要的那樣。

來源

2013-05-07 06:39:21

如何在PHP中的關聯數組中插入新的鍵值對？

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