通过键在php中递归排序多维数组的函数
[英]Function to sorting recursively a multidimensional array in php by key
问题描述
I have an array of categories and I would like to create a function to sort them by passing a parameter, which the function uses to sort the array. 
我有一个类别数组，我想创建一个函数以通过传递参数来对它们进行排序，该函数用于对数组进行排序。
the array I have is like this: 我拥有的数组是这样的：
Array
(
[1] = Array
(
[id] = 1
[name] = categoryName1
[parent] = 0
[sorting] = 1
[0] = Array
(
[id] = 6
[name] = categoryName6
[parent] = 1
[sorting] = 3
)
[1] = Array
(
[id] = 4
[name] = categoryName4
[parent] = 1
[sorting] = 2
)
[2] = Array
(
[id] = 3
[name] = categoryName3
[parent] = 1
[sorting] = 1
[0] = Array
(
[id] = 5
[name] = categoryName5
[parent] = 3
[sorting] = 1
)
)
)
[2] = Array
(
[id] = 2
[name] = categoryName2
[parent] = 0
[sorting] = 2
)
)
I tried with array_multisort like this: 我试过这样的array_multisort：
function recursive_sort(&$array, $sort_key) {
foreach ( $array as $k => &$v ) {
if (is_array($v)) {
recursive_sort( $v, $sort_key );
}
}
return array_multisort(array_column($array,$sort_key), SORT_ASC, $array);
}
recursive_sort($sorted_categories, 'sorting');
but I am getting this error: 但我收到此错误：
array_multisort(): Array sizes are inconsistent array_multisort（）：数组大小不一致
I expect the output: 我期望输出：
Array
(
[1] = Array
(
[id] = 1
[name] = categoryName1
[parent] = 0
[sorting] = 1
[0] = Array
(
[id] = 3
[name] = categoryName3
[parent] = 1
[sorting] = 1
[0] = Array
(
[id] = 5
[name] = categoryName5
[parent] = 3
[sorting] = 1
)
)
[1] = Array
(
[id] = 4
[name] = categoryName4
[parent] = 1
[sorting] = 2
)
[2] = Array
(
[id] = 6
[name] = categoryName6
[parent] = 1
[sorting] = 3
)
)
[2] = Array
(
[id] = 2
[name] = categoryName2
[parent] = 0
[sorting] = 2
)
)
with this function: 具有此功能：
recursive_sort($sorted_categories, 'sorting');
1 个解决方案
解决方案1
0 2019-06-14 16:57:17
I understood why i can't sort the array properly ... the child categories must be agglomerated inside a key (such as "child") like this: 我知道为什么我不能正确地对数组进行排序……子类必须在键（例如“子”）中聚集在一起，如下所示：
Array
(
[1] = Array
(
[id] = 1
[name] = categoryName1
[parent] = 0
[sorting] = 1
[child] = Array
(
[0] = Array
(
[id] = 6
[name] = categoryName6
[parent] = 1
[sorting] = 3
)
[1] = Array
(
[id] = 4
[name] = categoryName4
[parent] = 1
[sorting] = 2
)
[2] = Array
(
[id] = 3
[name] = categoryName3
[parent] = 1
[sorting] = 1
[child] = Array
(
[0] = Array
(
[id] = 5
[name] = categoryName5
[parent] = 3
[sorting] = 1
)
)
)
)
)
[2] = Array
(
[id] = 2
[name] = categoryName2
[parent] = 0
[sorting] = 2
)
) ）
so i can sort the array with this function 所以我可以使用此功能对数组进行排序
function recursive_sort(&$array, $sort_key) {
foreach ( $array as $k => &$v ) {
if (is_array($v)) {
recursive_sort( $v, $sort_key );
}
}
// at least 2 elements
if ($array[1]) {
return array_multisort( array_column( $array, $sort_key ), SORT_DESC, $array );
}
}
recursive_sort($sorted_categories, 'id');
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