PHP Sort multi-dimension array by keys - php

Question

I have a multi dimension array like below:
Array
(
[1200] => Array
(
[B] => Array
(
[4] => Array
(
[Name] => 'Joe']
)
)
[A] => Array
(
[3] => Array
(
[Name] => 'Paul']
)
)
)
[1100] => Array
(
[F] => Array
(
[2] => Array
(
[Name] => 'Sam']
)
)
[D] => Array
(
[1] => Array
(
[Name] => 'Jane']
)
)
)
What I wish to achieve is having the 4 digit number 1100 and 1200 in order ascending, then I need the letters (B A) and (F D) also in order, and then the single digit number under them in order ascending too. I believe I'm looking at a multi dimension array but any help would be appreciated.

Answer 1

The below function might be what you're looking for. It recursively orders arrays by their key.
function ksort_r(&$array) {
foreach ($array as &$value) {
if (is_array($value)) {
ksort_r($value);
}
}
return ksort($array);
}
Example usage
function ksort_r(&$array) {
foreach ($array as &$value) {
if (is_array($value)) {
ksort_r($value);
}
}
return ksort($array);
}
$data = [
1200 => [
'B' => [
4 => [
'Name' => 'Joe'
]
],
'A' => [
3 => [
'Name' => 'Paul'
]
]
],
1100 => [
'F' => [
2 => [
'Name' => 'Sam'
]
],
'D' => [
1 => [
'Name' => 'Jane'
]
]
]
];
ksort_r($data);
print_r($data);
The above will output...
Array
(
[1100] => Array
(
[D] => Array
(
[1] => Array
(
[Name] => Jane
)
)
[F] => Array
(
[2] => Array
(
[Name] => Sam
)
)
)
[1200] => Array
(
[A] => Array
(
[3] => Array
(
[Name] => Paul
)
)
[B] => Array
(
[4] => Array
(
[Name] => Joe
)
)
)
)