按字母顺序对动态获取的数组进行排序

Question

I have an array obtained from a json, and I want to sort its elements alphabetically.

I have a function that returns me the result of the array:

      $cities = get_cities();

I tried both:

  asort($cities['cities']);
  foreach($cities['cities'] as $rc) { blah blah

and

  foreach(asort($cities['cities']) as $rc) { blah blah

none did not do the sorting.

any idea about where I am wrong? thanks!

Answer 1

Sorting by city names could look like

$c = $cities['cities'];
usort($c, function($cityA, $cityB) { 
    return strcmp($cityA['name'], $cityB['name']);
});

Answer 2

Without knowing what your $cities array looks like, it is hard to tell what the problem is.

Have you tried using the just the regular PHP sort function? ie

sort( $cities );