PHP sort array alphabetically

Question

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 multid…

Accepted Answer

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]);
}
```

PHP sort array alphabetically

Solution

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