Как изменить ключи многомерного массива в PHP?
Мой многомерный массив с именем $cs_map_data как следует:
Array
(
[2] => Array
(
[class_id] => 2
[class_name] => II
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 81
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[3] => Array
(
[class_id] => 3
[class_name] => III
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 155
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 156
[subject_name] => 11 Maths
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 157
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
[3] => Array
(
[cs_map_id] => 158
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[4] => Array
(
[class_id] => 4
[class_name] => IV
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 86
[subject_name] => Physics
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[6] => Array
(
[class_id] => 6
[class_name] => VI
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 144
[subject_name] => Mathematics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 145
[subject_name] => Biology
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[7] => Array
(
[class_id] => 7
[class_name] => VII
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 129
[subject_name] => Physics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 130
[subject_name] => Chemistry11
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 131
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[8] => Array
(
[class_id] => 8
[class_name] => VIII
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 67
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 68
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[9] => Array
(
[class_id] => 9
[class_name] => IX
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 87
[subject_name] => Mathematics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 88
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 89
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
)
Если вы заметили, ключи массива [2],[3],[4],[6],[7],[8],[9], Эти ключи я получил от какой-то функции, определенной другим разработчиком. Теперь мое требование состоит в том, чтобы переименовать эти ключи, т.е. ключи массива должны быть [0],[1],[2],[3],[4],[5],[6], Другие элементы массива и другие пары ключ-значение должны быть такими, как есть. Я погуглил об этом, но не смог найти решение. Может кто-нибудь помочь мне переупорядочить эти ключи массива? Заранее спасибо. Мой требуемый вывод выглядит следующим образом:
Array
(
[0] => Array
(
[class_id] => 2
[class_name] => II
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 81
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[1] => Array
(
[class_id] => 3
[class_name] => III
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 155
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 156
[subject_name] => 11 Maths
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 157
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
[3] => Array
(
[cs_map_id] => 158
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[2] => Array
(
[class_id] => 4
[class_name] => IV
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 86
[subject_name] => Physics
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[3] => Array
(
[class_id] => 6
[class_name] => VI
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 144
[subject_name] => Mathematics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 145
[subject_name] => Biology
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[4] => Array
(
[class_id] => 7
[class_name] => VII
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 129
[subject_name] => Physics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 130
[subject_name] => Chemistry11
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 131
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[5] => Array
(
[class_id] => 8
[class_name] => VIII
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 67
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 68
[subject_name] => 11 Engllish
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
[6] => Array
(
[class_id] => 9
[class_name] => IX
[class_checked] => 0
[class_subjects] => Array
(
[0] => Array
(
[cs_map_id] => 87
[subject_name] => Mathematics
[subject_checked] => 0
[teacher_cs_id] =>
)
[1] => Array
(
[cs_map_id] => 88
[subject_name] => Hidi
[subject_checked] => 0
[teacher_cs_id] =>
)
[2] => Array
(
[cs_map_id] => 89
[subject_name] => 11 Science
[subject_checked] => 0
[teacher_cs_id] =>
)
)
)
)
3 ответа
Это просто вопрос array_values, как предложил Дэйв.
В вашем случае это выглядит так, как будто вам необходимо переиндексировать самый внешний массив и элементы 'class_subjects' на один уровень ниже.
Для внешнего уровня это легко. Скажем, все это хранится в переменной $a, затем
$a = array_values($a);
и самый внешний массив переиндексируется!
Внутренние массивы немного сложнее, я бы предложил попробовать foreach и использовать ссылку для компонента value.
Снова предположим, что самый внешний массив хранится в $a и это уже было переиндексировано, сейчас
$a = array_values($a);
foreach($a as $i => &$sub)
$sub['class_subjects'] = array_values($sub['class_subjects']);
и вы все сделали.
Поскольку здесь вы хотите переиндексировать индексы внешнего массива, array_values ($arr) будет отлично с ним работать. Вы можете попробовать с примером.
<?php
$arr = array(
'foo' => 'foo',
'bar' => array(
'baz' => 'baz',
'candy' => 'candy',
'vegetable' => array(
'carrot' => 'carrot',
)
),
'vegetable' => array(
'carrot' => 'carrot2',
),
'fruits' => 'fruits',
);
// Pass your array as argument
$arr1 = array_values($arr);
print_r($arr1);
?>
И если вы хотите рекурсивно выполнять итерации для внутренних массивов, вы можете ссылаться на примеры, приведенные в array_values. Надеюсь, это решит вашу проблему.