I'm struggling on this one. I have an array that contains countries and regions. I want to sort both sets of information in ascending order on the key.
Here is the array I'm working with:
Array
(
[Country] => Array
(
[United Kingdom] => Array
(
[London] => Array
(
[0] => 1
[1] => 5
[2] => 23
[3] => 71
)
[Manchester] => Array
(
[0] => 800
)
)
[United States] => Array
(
[New York] => Array
(
[0] => 147
[1] => 111
)
[Washington] => Array
(
[0] => 213
)
[Florida] => Array
(
[0] => 6
)
[Texas] => Array
(
[0] => 9
)
)
[Brazil] => Array
(
[Brasília] => Array
(
[0] => 64
)
)
)
)
So the reordered array would be:
Brazil
- Brasília
United Kingdom
- London
- Manchester
United States
- Florida
- New York
- Texas
- Washington
The data structure should remain the same, but the order of the number (e.g. London: 1,5,23,71) can stay the same.
I've tried several of the sorting methods from: http://php.net/manual/en/array.sorting.php
But they dont appear to do anything. Maybe because its a multidimensional array or maybe its not structured 100% logically... but I'm stuck with the array as it is.
Step 1:
Sort the country by key.
ksort($arr['Country']);
Step 2: Loop through the countries and sort those keys.
foreach ($arr['Country'] as $country=>$data) {
ksort($arr['Country'][$country]);
}